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Hägglunds DUc
Drive unit
Installation & Maintenance manual
RE 15326-WA, Version: 06.2020, Replaces: 09.2019, EN
The data in this document only serve to describe the product. No statements concerning a certain condition or suitability for a certain application can be derived from our information. The information given does not release the user from the obligation of own judgment and verification. It must be remembered that our products are subject to a natural process of wear and aging.
© This document, as well as the data, specifica tions and other information set forth in it, are the exclusive property of Bosch Rexroth AG. It may not be reproduced or given to third parties without its consent.
Changes in the equipment may occur. We therefore reserve the right to introduce amendments in the manual as we deem necessary without notice or obligations.
This Installation and maintenance manual is valid for Drive Units manufactured after 01.03.2019.
For older Drive Units please contact your nearest
Bosch Rexroth representative.
The cover shows an example configuration. The product supplied may therefore differ from the figure shown.
The original operating instructions were prepared in English.
| Hägglunds DUc Drive unit 3/88
Contents
1.2 Required and additional documentations ......................................................5
3 General notes regarding property damages and product damages ........... 13
5.5 Requirements for hydraulic fluid cleanliness ...............................................23
RE 15326-WA, Version 06.2020, Bosch Rexroth AB
4/88 Hägglunds DUc Drive unit |
Bosch Rexroth AB, Version 06.2020, RE 15326-WA
This documentation | Hägglunds DUc Drive unit 5/88
1 This documentation
1.1 Validity of the documentation
This documentation applies to the Drive Unit Hägglunds DUc, European and
American version, and is intended for machine/system manufactures, fitters and service engineers.
This documentation contains important information required to transport, install, commission, operate, use, service and dismantle the product safely and professionaly.
▶ Read this documentation completely before using the Hägglunds DUc
1.2 Required and additional documentations
▶ Before commissioning the product, make sure to have received and fully understood the documentations identified by the book symbol and observe the instructions included in these documentations.
Table 1: Necessary and supplementary documentation.
Title
Order confirmation
Document no
Order specific
Order documentation Order specific
Hägglunds Spider 2 RE 15330-WA
Pump control Hägglunds ICp RE 15422
Hydraulic fluid quick reference
Hägglunds products
RE 15414
Document type
Order confirmation
E.g. hydraulic and electric diagrams, bill of material, specifications
User manual
Data sheet
Data sheet
1.3 Presentation of information
Consistent safety instructions, symbols, terms and abbreviations are used in the present documentation to facilitate orientation for the reader and to ensure safe product handling. The explanations in the following sections will provide for easy understanding.
RE 15326-WA, Version 06.2020, Bosch Rexroth AB
6/88 Hägglunds DUc Drive unit | This documentation
1.3.1 Safety messages
This documentation includes safety messages placed before sequential operating procedures that may involve the risk of personal or property damage. The described precautionary measures must be observed.
Safety messages are structured as shown below:
SIGNAL WORD
Type and source of risk
▶ Consequences if disregarded
▶ Precautionary measures
▶ <listing>
• Warning sign: draws attention to the risk
• Signal word: identifies the hazard level
• Type and source of risk: identifies the type and source of the hazard
• Consequences: describes what occurs when the safety messages are of non compliance type
• Precautions: indicates how the hazard can be avoided
Table 2: Risk categories to ANSI Z535.6-2006
Warning sign, signal word
DANGER
WARNING
CAUTION
NOTICE
Meaning
Indicates a hazardous situation which, if not avoided, will result in death or serious injury.
Indicates a hazardous situation which, if not avoided, could result in death or serious injury.
Indicates a hazardous situation which, if not avoided, could result in minor or moderate injury.
Indicates potential property damage: the product or the environment may be damaged.
1.3.2 Symbols
The following symbols identify notices that are not safety-relevant, but enhance the comprehensibility of the documentation.
Table 3: Meaning of the symbols
Symbol Meaning
When this information is not observed, optimum use or operation of the product cannot be ensured.
▶
1.
2.
3.
Single, independent step
Numbered instructions:
The number indicates that the different steps are to be performed successively.
Center of gravity
Markings on packaging to indicate where the center of gravitiy are.
Bosch Rexroth AB, Version 06.2020, RE 15326-WA
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2 Safety instructions
2.1 About this chapter
This product has been manufactured in strict compliance with the generally accepted rules of technology. However, this does not exclude the risk of damage to persons or property if this chapter and the safety instructions included in the present documentation are not observed.
▶ Read the entire documentation carefully before starting to use the product.
▶ Keep this documentation in a location where it is accessible to all users at any time.
▶ When passing over the product to third parties, make sure to include the necessary documentation.
2.2 Intended use
The Hägglunds DUc drive unit is a hydraulic power unit.
In the application the Hägglunds DUc Drive Unit is classified as a partly completed machinery. The European version in the sense of the EU machine directive
2006/42/EC. A partly completed machinery is exclusively intended to form an incomplete or a complete machine together with other components or partly completed machineries. The Drive Unit may only be commissioned after it has been installed in the machine/system for which it is intended and the safety of the entire system has been established in accordance with the machine directive.
Intended use includes having read and understood the complete documentation,
especially the chapter 2: Safety instructions
.
The product is intended for the following use:
• Create hydraulic flow in a closed loop hydraulic system.
Special Drive Units
Standard Drive Units are not allowed to be used beside an ambient temperature of
-20 °C to 40 °C (-4 °F to 104 °F), or in areas with potentially explosive atmospheres.
Drive Units intended for use in ambient temperature below 0 °C (32 °F), will be fitted with special optional equipment for preheating the hydraulic system before start.
Observe the technical data, application and operating conditions and performance limits as specified in the product-specific documentation and in the order confirmation.
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2.3 Improper use
Any use other than that described as intended use shall be considered as improper and is therefore impermissible.
Bosch Rexroth shall accept no liability whatsoever for damage resulting from improper use. The user shall bear all risks arising from improper use.
Similarly, the following foreseeable faulty usages are also considered to be improper:
• Using outside the operating parameters approved in the product-specific data sheet or in the order confirmation (unless customer-specific approval has been granted)
• Use of fluids outside of the standards as specified in RE15414 Hydraulic fluid quick reference.
• Modification of factory settings by non-authorized persons
• Use of add/on parts (e.g. mountable filter, control unit, valves) that are not specified by Bosch Rexroth has to be approved by contact at Bosch Rexroth.
• Extension or conversion is not permissible and has to be approved by contact at
Bosch Rexroth.
• Using the Drive Unit in explosive environments unless the component or machine/system has been certified as compliant with the local regulations.
• Using the Drive Unit in an aggressive atmosphere without necessary additional measures.
2.4 Personnel qualifications
The activities described in this documentation require basic mechanical, electrical and hydraulic knowledge, as well as knowledge of the associated technical terms.
For transporting and handling the product, additional knowledge is necessary with regard to working with a lifting device and the corresponding attachment equipment. In order to ensure safe use, these activities may therefore only be carried out by appropriate qualified personnel or an instructed person under the direction and supervision of qualified personnel.
Qualified personnel are those who can recognize possible hazards and institute the appropriate safety measures due to their professional training, knowledge, and experience, as well as their understanding of the relevant regulations pertaining to the work to be done. Qualified personnel must observe the rules relevant to the subject area and have the necessary hydraulic, electric and automation knowledge.
Hydraulic knowledge means, for instance:
• Reading and fully understanding hydraulic diagram,
• Fully understanding in particular the interrelationships regarding safety devices and having knowledge on the function and assembly of hydraulic components.
Electric knowledge means, for instance:
• Reading and fully understanding of electrical diagrams
• Certification for work with electrical equipment
Automation knowledge means, for instance:
• Reading and fully understanding of logic diagrams
• Knowledge of programmable equipment (PLC, VFD etc)
Bosch Rexroth offers training support for special fields. For more information about training, please contact your Bosch Rexroth representative.
Bosch Rexroth AB, Version 06.2020, RE 15326-WA
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2.5 General safety instructions
• Observe the regulations for accident prevention and environmental protection.
• Comply with the local safety provisions and regulations of the country in which the product is used.
• Make sure to use Rexroth products in perfect working order.
• Strictly observe all instructions on the product.
• Persons, who assemble, operate, disassemble or maintain Rexroth products must not consume any alcohol, drugs or pharmaceuticals that may affect their ability to respond.
• Use exclusively accessories and spare parts explicitly approved by the manufacturer to avoid accidents due to improper accessories and spare parts.
• Strictly observe the technical data and ambient conditions specified in the product documentation.
• Inadequate products installed or used for safety-relevant applications may produce unintended operating behavior and result in product or property damage. For this reason, use a product in safety-relevant applications only on condition that such use is specified and allowed in the corresponding product documentation.
• Prior to commissioning the product, make sure that the end product (e. g. a machine or line), into which Rexroth products are integrated, perfectly complies with the country-specific provisions, safety regulations and standards applicable to its use.
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2.6 Product-specific safety instructions
The safety instructions below apply to chapters 6: Transport and storage to
DANGER
Danger from suspended loads
Danger to life or risk of injury, damage to equipment.
Improper transportation may cause the Hägglunds Drive Unit to fall down lead to injuries e.g. crushing or broken bones or damage to the product.
▶ Make certain that the forklift truck or lifting device has adequate lifting capacity.
▶ Never stand under or put you hands under suspended loads.
▶ Ensure your position is stable during transportation.
▶ Use your personal protective equipment (e.g. protective goggles, safety gloves, suitable working clothes, safety shoes).
▶ Use suitable lifting device for transport and storage, installation and for removal and repair. Make sure the electric motor is well mounted or anchored when the lifting device is disconnected.
▶ Observe the prescribed position of the lifting strap.
▶ Observe the national laws and regulations on work and health protection and transportation.
Pressurized machine/system
Danger to life or risk of injury, serious injuries when working on machines/systems not shutdown! Damage to equipment.
▶ Always lockout-tagout electric motors before maintenance.
▶ Do not disconnect any line connections, ports and components when the machine/system is pressurized.
▶ Always ensure that no energy is accumulated before any measures.
▶ Ensure that no pressure will enter the hydraulic system in the Drive Unit via the hydraulic motor e.g. loads on the shaft or winch drum.
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WARNING
Escaping oil mist
Risk of explosion, fire, health hazard, environmental pollution.
▶ Depressurize the machine/system and repair the leak.
▶ Keep open flames and ignition sources away from the Hägglunds Drive Unit.
High voltage
Danger to life or personal injury hazard through electrical shock.
▶ Prior to accessing electrical parts with a voltage higher than 50 volts always disconnect the device from the mains or power unit. Secure the electrical equipment against being switched on again by accident.
▶ Observe the general deployment regulations, safety regulations and domestic laws for work on heavy-current equipment.
▶ The operation, maintenance and/or repair of such equipment is reserved to skilled personnel qualified to work on or with electrical equipment.
▶ Prior to switching the equipment on always check the protective earth conductor for reliable connection to all electrical equipment according to the connection diagram.
▶ Exclusively run the component/device - even for short-time measurements or tests - with the protective earth conductor reliably connected to the dedicated connection points.
Danger due to incorrect mounting and setting of electrical, hydraulic and mechanical functions as well as controls
Risk of personal injury or property damage.
▶ Follow instructions for delivered equipment.
Rotating parts
Risk of injury or serious injuries.
▶ Do not touch rotating parts or in the zone of rotating parts.
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CAUTION
High noise development in operation
Danger of hearing damage, deafness.
The noise emission of Hägglunds Drive Unit depends on speed, operating pressure and installation conditions.
▶ Always wear hearing protection when in the vicinity of the operating Drive Unit.
Hot surfaces on the Drive Unit
Risk of burns.
▶ Allow the Hägglunds Drive Unit to cool down sufficiently before touching it.
▶ Wear heat-resistant protective clothing, e.g. gloves.
Improper routing of cables and lines
Tripping hazard and damage to equipment.
▶ Lay cables and lines so that they can not be damaged and nobody can trip over them.
Contact with hydraulic fluid
Hazard to health/health impairment e.g. eye injuries, skin damage, toxication during inhalation.
▶ Avoid contact with hydraulic fluids.
▶ When working with hydraulic fluids, strictly observe the safety instructions provided by the lubricant manufacturer.
▶ Use your personal protective equipment (e.g. protective goggles, safety gloves, suitable working clothes, safety shoes).
▶ If hydraulic fluid should, nevertheless, come into contact with your eyes or bloodstream or is swallowed, consult a doctor immediately.
Escaping hydraulic fluid due to machine/system leakage
Risk of burns and risk of injury due to escaping oil jet.
▶ Depressurize the machine/system and repair the leak.
▶ Never attempt to block or seal the leak or oil jet with a cloth.
Operator error
Risk of personal injury or damage to the product.
▶ Check both the general and the custom technical documentation to identify the features of your unique Drive Unit
2.7 Personal protective equipment
Use personal protective equipment like helmet, protective goggles, safety shoes and hearing protection.
The personal protective equipment is the responsibility of the user of the
Hägglunds Drive Unit. Observe the safety regulations and provisions of your country.
All components of the Personal protective equipment must be in perfect condition.
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3 General notes regarding property damages and product damages
NOTICE
Danger from improper handling
Product can be damaged.
▶ Do not expose the product to an impermissible mechanical load.
▶ Never use the product as a handle or step.
▶ Do not place/lay any objects on the product.
▶ Do not strike the Hägglunds Drive Unit or any part of it or its accessories.
▶ Do not strike fittings (e.g. sensors or valves).
▶ Do not strike sealing surfaces (e.g. service line ports).
▶ Leave the protective covers on the Hägglunds Drive Unit until shortly before the lines are connected.
▶ Do not perform electro-welding on the Hägglunds Drive Unit.
Damage to equipment due to improper lubrication
Product can be damaged or destroyed.
▶ Never operate the Hägglunds Drive Unit with insufficient hydraulic fluid.
▶ When commissioning a machine/system, make sure that the case interior and the service lines of the Hägglunds motor are filled with hydraulic fluid and remain filled during operation.
Mixing of hydraulic fluids
Product can be damaged.
▶ Before installation, remove all fluids from the Hägglunds motor to prevent mixing with the hydraulic fluid used in the machine/system.
▶ Any mixing of hydraulic fluids of different manufacturers or different types of the same manufacturer is not permissible in general.
Wrong voltage
Electrical motor damage.
▶ All electrical supply levels shall be within the limits that the equipment is constructed for, see order specific Hägglunds DUc documentation and product identification.
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NOTICE
Contamination of the hydraulic fluid
The cleanliness of the hydraulic fluid has a considerable impact on the cleanliness and service life of the hydraulic system. Contamination of the hydraulic fluid could cause premature wear and malfunctions.
▶ Make sure that the working environment at the installation site is fully free of dust and foreign substances in order to prevent contaminants, such as welding beads or metal cuttings, from getting into the hydraulic lines and causing product wear or malfunctions. The Hägglunds Drive Unit must be installed in a clean condition.
▶ Use only clean connections, hydraulic lines and attachments (e.g. measuring equipment).
▶ Keep the connections plugged as long as possible.
▶ Before commissioning, make sure that all hydraulic connections are tight and that all of the connection seals and plugs are installed correctly to ensure that they are leakproof and fluids and contaminants are prevented from penetrating the product.
▶ Use a suitable filter system to filter hydraulic fluid during filling to minimize solid impurities and water in the hydraulic system.
Improper cleaning
Product can be damaged.
▶ Plug all openings with the appropriate protective equipment in order to prevent detergents from entering the hydraulic system.
▶ Never use solvents or aggressive detergents. Use only water and, if necessary, a mild detergent to clean the Hägglunds Drive Unit.
▶ Never use a high pressure washing system to clean inside the Drive Unit
▶ For outside washing, do not point the power washer at sensitive components, e.g. electrical connections and components.
▶ Use lint-free cloths for cleaning.
Environmental pollution due to incorrect disposal
Careless disposal of the Hägglunds Drive Unit and its fittings, the hydraulic fluid and the packaging material could lead to pollution of the environment.
▶ Dispose of the Hägglunds Drive Unit, hydraulic fluid and packaging in accordance with the national regulations in your country.
▶ Dispose of the hydraulic fluid in accordance with the applicable safety data sheet for the hydraulic fluid.
Escaping or spilling hydraulic fluid
Environmental pollution and contamination of the ground water.
▶ Use an oil binding agent if hydraulic fluid is spilled.
▶ Observe the information in the safety data sheet for the hydraulic fluid and the specifications provided by the system manufacturer.
The warranty applies only to the delivered configuration.
The entitlement to warranty cover will be rendered void if the product is incorrectly installed, commissioned or operated, or if it is used or handled improperly.
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4 Scope of delivery
Included in the delivery contents are:
• Hägglunds DUc as per order confirmation
5 About this product
5.1 Product description
The intention with the Drive Unit is to provide the hydraulic motor(s) with the required flow of oil and pressure at the right time. All included parts are assembled in a compact cabinet. The Drive Unit has one to four pumps driven by one or two electric motors. The main pump is an axial piston pump with variable displacement for closed loop systems. The electric motor is totally enclosed
(TEFC).
The standard control system to the Drive Unit is Hägglunds Spider, a small, compact and configurable control system. It can health monitor the Drive Unit and can control the pumps with a high variation of pre-programmed functions.
The Drive Unit is a very flexible product with a wide option range. This makes it possible to select a standard Drive Unit to fulfil the features needed in many different applications.
This installation and maintenance manual is intended to cover all standard options.
It may not cover all details on customized Drive Units and other control systems than Hägglunds Spider, that differs from the standard Hägglunds DUc concept.
5.2 Product identification
1 Type code
2 Serial number
3 Weight
4 Manufacturer
5 Max pressure
1
2
3
Fig. 1: Example of product identification from DUc European version
4
5
DD00057560
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5.3 Main components
Note!
Changes from the picture and the components may occur.
1
6, 7
Product
14
3 identification
2
16
Fig. 2: Main components DUc MS2, LS2
9
10
11
12
5
6
7
8
13
14
15
16
17
2
3
4
Main components
Item Description
1 Electrical motor
Hydraulic pump
Shaft coupling/bellhousing
Frame
Panels (not shown)
Control system, Hägglunds Spider (at backside on DUc MT2, LT2)
Control panel (at front side panel door on DUc MT2, LT2)
Oil heater (optional, not shown)
Oil cooler
Oil tank
Flushing or /and brake circuits (optional, not shown)
Filter
Charge filter (optional, not shown)
Accumualator (optional)
Light (optional, not shown)
Pressure sensors
Hoses, internal (not shown)
Bosch Rexroth AB, Version 06.2020, RE 15326-WA
–
–
–
–
–
–
–
See also figure
–
–
–
–
–
–
–
DD00072757
9
Accumulator filling point.
Thread size
.305-32 UNS male
4
12
Oil filling point
10
Drain tap
1˝ BSP Female
1
3
Product identification
12
2
16 14
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DD00098769
7
9
4
6
Oil filling point
10
Drain tap
1˝ BSP Female
Fig. 3: Main components DUc MT2, LT2
Accumulator filling point.
Thread size .305-32
UNS male
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1
9
Product identification
6, 7
12
Accumulator filling point.
Thread size .305-32
UNS male
14
Oil filling point
10
Fig. 4: Main components DUc LS3
13
14
15
16
17
7
8
9
10
11
12
4
5
6
2
3
Main components
Item Description
1 Electrical motor
Hydraulic pump
Shaft coupling/bellhousing
Frame
Panels (not shown)
Control system, Hägglunds Spider (at backside on DUc LT3)
Control panel (at front panel door on DUc LT3)
Oil heater (optional, not shown)
Oil cooler
Oil tank
Flushing or /and brake circuits (optional, not shown)
Filter
Charge filter (optional, not shown)
Accumualator (optional)
Light (optional, not shown)
Pressure sensors
Hoses, internal (not shown)
Bosch Rexroth AB, Version 06.2020, RE 15326-WA
Drain tap
1˝ BSP Female
–
–
–
–
–
–
–
–
–
–
–
–
–
See also figure
–
DD00103962
2
16
3
4
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DD00103963
6
Product identification
2
10 Oil filling point
9 1
16
7
3
4
12
Accumulator filling point.
Thread size
.305-32 UNS male
14
Drain tap
1˝ BSP Female
Fig. 5: Main components DUc LT3
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1
3
2
Fig. 6: Oil cooler alternatives
2
3
Item
1
Description
Air-oil cooler
Water-oil plate cooler
Water-oil tube cooler
DD00098770
Bosch Rexroth AB, Version 06.2020, RE 15326-WA
4
8
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1
5
3
6
2
Fig. 7: Detailed view, tank DUc
6
7
8
4
5
2
3
Item
1
Description
Oil-level gauge
Oil-drain valve
Level and temperature sensor
Air filter breather for tank bladder (optional)
Air filter breather
Suction valve
Oil heater (optional)
Tank bladder (optional)
7
DD00098772
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5.4 Hydraulic fluids
The Hägglunds hydraulic system is primarily designed for operation with hydraulic fluids according to ISO 11158 HM.
Fluids by the standards given in
are suggested. Before the start of project planning, see data sheet RE 15414, Hydraulic fluid quick reference , for detailed information on hydraulic fluids and specific additional demands
Table 4: Suggested fluid types
ISO 11158
Mineral oil based and mineral oil related hydraulic fluids
ISO 15380
Environmentally acceptable hydraulic fluids
ISO 12922
Fire resistant hydraulic fluids
Details regarding the selection of hydraulic fluid
The hydraulic fluid should be selected such that the operating viscosity in the temperature range, as measured in the motor housing, is within optimum operation range, see
General recommendation is to have a system temperature of
50°C, see dotted line in Fig. 8
. A VG 68 fluid will render just above 40 cSt at this point.
• Optimum viscosity range is 40 to 150 cSt.
• Running above 150 cSt or below 40 cSt results in reduced efficiency.
• Running above 400 cSt results in substantial efficiency loss.
• For pumps, the maximum start-up viscosity is 2000 cSt.
• For motors, starting at above 10000 cSt imparts unnecessary strain on parts.
• Running below 30 cSt may impact the service life.
• Running below 20 cSt may render instant seizure.
DD00069413
Viscosity, ν [cSt]
20000
10000
5000
3000
2000
1000
600
400
300
200
150
100
80
60
50
40
30
20
14
-40
-40
-30
-22
-20
-4
-10
14
0
32
10
50
20
68
30
86
40
104
50
122
60
140
70
158
80
176
90
194
100
212
Temperature, t [°C/° F]
110
230
Fig. 8: Selection diagram for viscosity ranges with straight fluids, i.e. viscosity index 100
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5.5 Requirements for hydraulic fluid cleanliness
The Drive Units are equipped with filters on the drain line and return line. In order to obtain stated service life it is important to follow recommendations concerning cleanliness levels and maintenance.
Cleanliness level recommendations
•
The system must be flushed before start up (see section 8.3: Flushing before start up
).
• When filling the tank with hydraulic fluid it is important to fill through the dedicated oil filling connection (see
8.2: Filling up the system with hydraulic fluid
).
• For industrial applications the contamination level should not exceed ISO
4406:1999 18/16/13.
• Have a water content of <200 ppm (0,02%).
• Always use filter elements recommended and supplied by Bosch Rexroth.
• The hydraulic fluid should be analysed according to the maximum intervals on
the maintenance chart (see Table 20: Maintenace chart
). Be particularly careful when removing equipment for repairs or maintenance, dirt must not be allowed to enter the system, clean prior to opening and plug open connections.
NOTICE
Dirt in oil
Damage on equipment.
▶ Do not re-use hydraulic fluid which has leaked out.
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5.6 Cooling water
The cooling system with water-oil plate cooler is primarily designed to operate with clean fresh water.
When there are particles in the water, larger than 0,5 mm (0,02“), a water filter has to be used.
For heavy contaminated water a water-oil tube cooler should be used.
Table 5: Water connection
Recommended water pressure over cooler
Max allowed water pressure
European version American version bar
3.5
PSI
51 bar PSI
Not specified
16 232 10 150
Stainless steel water pipes are recommended to avoid corrosion. If other material is used, galvanic isolation is required between the stainless steel connections and water piping.
If the Drive Unit is equipped with rubber feets, flexible hoses are recommended between water connections and water piping.
It is important to:
• Maintain the water filter (if any) in a correct way to get the required flow of water through the water-oil cooler.
• Check the temperature in the hydraulic system regulary.
• Clean the cooling system if the temperature in the hydraulic system is above the specified limits on account of too low cooling capacity.
• Clean and empty the cooling system (water side) before periods of rest
(especially if the cooling water is not totally clean).
NOTICE
Cooling capacity too low
The service life of hydraulic motor, the main components in Drive Unit and the hydraulic fluid will be reduced.
▶ Have the required flow, pressure and temperature of the cooling water (see order specific Hägglunds DUc documentation).
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5.7 Drive Unit monitoring
If no monitoring function is included with the Drive Unit, the following function must be fulfilled in the system. See order specific Hägglunds DUc documention for the monitoring settings.
The monitoring of the Drive Unit switches and sensors are grouped in two levels
.
The warning indication is to give an indication about a problem in the Drive Unit that does not need an immediate action.
The alarm indicates a need for stopping the pump. The stop sequence is to first stop the hydraulic motor by setting the pump swash angle to zero without ramp to allow the hydraulic drive to stop and after a short delay switch off the electric motor.
The low (charge) pressure indicator must be interlocked during stop and startup of the electric motor to avoid alarm and give the pump time to build up the charge pressure after start.
DD00066427
Fig. 9: Example of monitoring logic diagram with ISO VG 68 oil
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6 Transport and storage
6.1 Storage of the packed Drive Unit
At delivery the drive unit is protected by a wooden crate covering a sealed plastic hood and internally protected with desiccant bags to absorb moisture. Do not remove the plastic hood until installation!
Parts delivered seperately (eg. motors and cooler) are delivered in plastic hoods with VCI corrosion protection.
Fig. 10: Crate with rain protection
DD00110146
Fig. 11: Plastic hood
DD00110144
Fig. 12: Desiccant bags
DD00110142
The plastic hood and the desiccant bags provides sufficient corrosion protection for indoor storage up to 12 months from delivery date. If storage time exceeds 12 months, the crate must be opened to access the plastic hood.
Open the plastic hood gently to avoid damage. Exchange the desiccant bags.
Original used type Propadry A311 absorption capacity 750 g/dessicant bag
Table 6: Required quantity of original desiccant bags
MS2, LS2
MT2, LT2
LS3
LT3
5 pcs
6 pcs
8 pcs
10pcs
For separately delivered parts stored more than 18 months from delivery date, the
VCI protection can be extended. Open the plastic hood gently to avoid damage and add VCI foam pads, 1 pad/250 litres box volume.
Close the plastic hood carefully and seal according to original protection. If the plastic hood has damages the holes has to be sealed or the hood exchanged.
Table 7: Plastic hood material numbers
MS2, LS2
MT2, LT2
LS3, LT3
R939058075
R939058077
R939058080
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6.2 Lifting the packed Drive Unit
The packed Drive Unit is among other things marked with centre of gravity and weight. Normally the Drive Unit package is designed for forklift handling.
WARNING
Packed Drive unit can tip over
Danger to life or risk of injury, damage to equipment
▶ Centre of gravity is high, see label on the crate.
▶ Avoid rapid acceleration, deceleration and turns while moving the goods.
▶
Position the forks according to the instructions in 6.2: Lifting the packed Drive
Unit, section Lifting with fork lift
Lifting with fork lift
The lifting of drive units must be done according to Table 8.
The centre of gravity has to be between the forks.
Table 8: Minimum required fork length
Cabinet size
DUc MS2, MT2 (long side)
DUc LS2, LT2 (short side)
DUc LS3, LT3 (short side)
DUc LS3, LT3 (long side) mm
1150
2400
2400
1500
Fork length in
45.2
94.5
94.5
59.1
Parts that are delivered separately
• The package is always marked with the weight.
• Packages are only designed for forklift truck handling.
RE 15326-WA, Version 06.2020, Bosch Rexroth AB
28/88 Hägglunds DUc Drive unit | Installation
7 Installation
7.1 Installation directives
If the Drive Unit is to work properly it must be installed in accordance with these instructions. The conditions the unit will operate in must be taken into consideration.
Improper installation, not following the instructions in this manual and in the attached technical documentation, may affect the function and/or the service life of the Drive Unit. It is important that the safety precautions in this manual always are followed.
Position the Drive Unit:
• on a firm level foundation to avoid vibrations.
• to ease maintenance and service (see
7.3: Positioning the Drive Unit
).
• protected from weather, airborne sprays, heavy contaminations and radiated heat.
• to ensure free ventilation for cooling purposes for the electric motor and the air-
• to minimize pipe runs.
Clamp each pipe in the pipe run separately and attach it to a firm foundation to avoid vibration. The hydraulic connections from the Drive Unit must always be fitted to the piping with hoses. If air-oil cooler is mounted at a location other than on the Drive Unit, it must be considered that the cooler will start without notice and has sharp edges.
DANGER
Danger while transporting or lifting Hägglunds Drive Unit due to heavy weight!
Danger to life, risk of injury or serious injuries and risk of damage to equipment
▶ Do not stand under hanging load.
▶ Use only lifting equipment adapted to the weight of the Drive Unit (check rating plate inside the cabinet).
▶ Centre of gravity is high, see label on plastic cover of cabinet.
▶ Do not lift the Drive Unit with hydraulic fluid in the tank, or with the front bar disassembled.
▶ Do not lift the Drive Unit with main electric motors installed unless the motors are preassembled at delivery.
▶
Always use the number or lifting points, seen in
Fig. 13, Fig. 14, Fig. 15, Fig. 16,
when lifting the Drive Unit.
7.2 Lifting methods
Lifting with fork lift
See 6.2: Lifting the packed Drive Unit section lifting with fork lift.
Lifting with ropes/chains
The Drive Unit shall be lifted without main electric motors and cooler unless they are assembled at delivery. See data sheet RE 15326 for what are assembled at delivery
Bosch Rexroth AB, Version 06.2020, RE 15326-WA
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Table 9: Max load for each lifting hook
DUc
Safety factor 4
Rope angle
45°
60°
90° kg
3 100
3 800
4 500 lb
6 834
8 378
9 921
Example 1:
Weight Drive unit LT2 = 1800 kg, (weight without cooler and main electric motors).
1800/3 = 600 kg/ lifting hook.
A rope angle of 45° gives a safety factor above 4.
Example 2:
Weight Drive unit LT3 (SP500+500) = 3600 kg, (weight without cooler and main electric motors).
3600/3 (assume that main load is on three of the four lifting hooks) = 1200 kg/ lifting hook.
A rope angle of 45° gives a safety factor above 4.
DD00099006
Fig. 13: Lifting the DUc MS2 with rope angle 60°
DD00099009
Fig. 14: Lifting the DUc LS2 with rope angle 45°
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30/88 Hägglunds DUc Drive unit | Installation
DD00099011
Fig. 15: Lifting the DUc MT2, LT2 with rope angle 45°
DD00103961
Fig. 16: Lifting the DUc LS3, LT3 with rope angle 45°
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7.3 Positioning the Drive Unit
The following space should be left free around the drive unit, to allow free ventilation and to provide sufficient working space for maintenance. Heavier maintenance such as change of motor/pump will demand more working space.
It is important that all pipes (both for water and hydraulics) are arranged to provide sufficient working space for maintenance.
WARNING
Unstable movement or turning over of the Drive Unit at installation of Drive
Units in outdoor environment with heavy wind, at inclined surfaces or in areas with risk for earthquakes.
Risk of injury or serious injuries
▶ The Drive Unit has to be fixed to the ground with fixing screws or similar.
DD00097372
Fig. 17: Recommended minimum space over electric motor
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Fig. 18: Recommended minimum space around DUc single pumps
DD00102066
Fig. 19: Recommended minimum space around DUc tandem pumps
Table 10: Recommended minimum space around DUc
B2
C1
D1
D2
H1
Minimum space
A1
A2 *
B1 mm
700
700
700
1000
600
900
900
150 in
28
28
28
40
24
36
36
6
*Use A2 instead of A1 when there is external flushing or brake mounted.
DD00097371
Bosch Rexroth AB, Version 06.2020, RE 15326-WA
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7.4 Mounting of the cabinet feet
CAUTION
Unplanned drop of the unit
Risk of injury.
▶
Follow the safety precautions in 7.2: Lifting methods
▶ Use support to provent drop.
The cabinet feet (option) minimizes the vibrations and makes it easy to level the Drive Unit. They are delivered separately within the cabinet and have to be mounted according to the following instructions:
1. Mount the cabinet feet before filling hydraulic fluid in the tank.
2. Mount the cabinet feet before the electric motor(s), if they are delivered separately or supplied by the customer.
3. Lift the Drive Unit according to 7.2: Lifting methods
. Notice especially the safety precautions.
4. Mount the cabinet feet according to
and
Level the Drive Unit by the adjusting screws.
Adjustment screw
B
DD00072983
Fig. 20: Adjusting cabinet feet
Table 11: Adjusting cabinet feet
Cabinet size
DUc MS2
DUc MT2, LS2, LT2, LS3,
LT3
Adj. height
A mm
25-32 in
1-1.25
30-38
1.18-
1.50
Adj. screw head size mm
18 in
0.71
24 0.94
Hole Ø
B mm
15
20 in
0.59
0,79
RE 15326-WA, Version 06.2020, Bosch Rexroth AB
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7.5 Mounting of main electric motor
In many cases the electric motor(s) are delivered separately. The following instructions are applicable for these cases only.
WARNING
Unsecured motor can fall
Risk to life or serious injury or material damage.
▶ Do not stand under hanging load.
▶ Use all lifting ears when the electric motor is hanging free.
▶ Earbolts must be screwed in right up to their supporting surface and tightly fastened
▶ Use only lifting equipment adapted to the weight on the rating plate.
▶ No hands between electric motor and bellhousing during assembly.
▶ I f necessary, use suitable, sufficiently-sized transport equipment such as lifting straps (EN1492-1)
1. Unpack the electric motor
Unpack the electric motor. Check the electric motor for external damage and that all rating plate data are the same as in the attached technical documentation.
2. Check the shaft coupling
Check that the axial shaft coupling for external damage and that the locking screw is tightened.
3. Lift the electric motor
Two separate lifting equipments are needed to lift the electric motor.
Lift the electric motor horizontally with both lifting equipments.
Do not use the motor shaft as lifting point!
– When on a reasonable height, lower one of the lifting equipment until the motor is hanging vertically.
– If needed lower the motor to a stable frame of plank or similar resting on the electric motor flange.
– If needed reconnect one lifting equipment for vertical lifting of the electric motor. The straps must be separated to avoid force from the straps to the fan
)
Never let the electric motor stand on the shaft coupling!
Bosch Rexroth AB, Version 06.2020, RE 15326-WA
Installation | Hägglunds DUc Drive unit 35/88
Fig. 21: Lifting electrical motor vertically
DD00098773
4. Mount the electric motor in the Drive Unit
Lift the electric motor on to the Drive Unit. It is important that the electric
motor is hanging vertically. Fit the shaft coupling through inspection hole ( Fig.
) into the ring gear coupling without causing any damage. Lower the motor to a position approximately 5 mm (0,2 in) above the bellhousing. Place screws in the holes and tighten by hand. Lower the motor to the bellhousing.
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36/88 Hägglunds DUc Drive unit | Installation
5. Tighten screws to the bellhousing
Inspect that there is an axial clearance ( Fig. 22 ) through the inspection hole
in the bellhousing. Tighten the attached screws to the bellhousing with torque according to
Table 12: Tightening torques of bellhousing
Aluminium 12
Cast iron
Steel
Nm
23
34
M8 lb·ft
9
17
25
Nm
23
46
67
M10 lb·ft
17
34
49
Nm
40
79
115
M12 lb·ft
29
58
85
Nm
100
195
290
M16 lb·ft
74
144
214
Nm
190
395
560
M20 lb·ft
140
291
413
Nm
M24 lb·ft
680
970
502
715
Electrical motor
Motor plate
Inspection hole
Ring gear
Bellhousing S
Pump
Fig. 22: Mounting of electrical motor
Shaft coupling
For information about coupling type, see order specific Hägglunds DUc documentation
Table 13: Axial shaft coupling clearance
Coupling types
R38
R42
R48
R55
R75
R90
R100
R110
Axial clearance, S mm in
3.0
0.118
3.0
3.5
0.118
0.138
4.0
5.0
0.157
5.5
6.0
6.5
0.197
0.216
0.236
0.256
DD00070842
Bosch Rexroth AB, Version 06.2020, RE 15326-WA
DD00102135
Installation | Hägglunds DUc Drive unit 37/88
7.6 Hydraulic connections
During mounting of the hydraulic connections the following points must be followed.
• Do not remove coupling protections until final assembly.
• Mount all external pipes to give sufficient working space to allow maintenance of the Drive Unit.
• Always use hoses to connect with piping.
• All measures in the hydraulic system must be performed by professional service personnel with knowledge of risks involved. Be especially accurate when connecting the A- and B- connections (high pressure).
DANGER
Pressurized oil leakage
Danger to life or risk of injury.
▶ Do not open any connections if the hydraulic system is pressurized.
DD00102141
Fig. 23: Connections DUc MS2, MT2
DD00102142
Fig. 24: Connections DUc LS2, LT2
DD00102143
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DD00102144 DD00102145
Fig. 25: Connections DUc LS3, LT3
Table 14: Hydraulic connections (European version)
C1
C2
C3*
C4*
RF1
RF2
RB1
RB2
D
WA1
WA2
Medium frame
ISO 8434-1 28L Male
ISO 8434-1 28L Male
ISO 8434-1 22L Male
ISO 8434-1 28L Male
ISO 8434-1 12L Male
ISO 8434-1 28L Male
½˝ BSP Female (B15)
1˝ BSP Female (B25T)
Optional
BSP
¾˝
1˝
⅜˝
1˝
1¼˝ BSP Female (B120T) single cooler
1˝ BSP Female (FC160)
1½“ BSP Female (GK400, GK600)
Large frame -
2 comp.
ISO 8434-1 35L
Male
ISO 8434-1 35L
Male
ISO 8434-1 22L
Male
Optional
BSP
Large frame -
3 comp.
ISO 8434-1 35L
Male
¾˝
ISO 8434-1 42L
Male
ISO 8434-1 35L
Male
ISO 8434-1 42L
Male
ISO 8434-1 22L
Male
ISO 8434-1 28L
Male
ISO 8434-1 12L
Male
1˝
⅜˝
ISO 8434-1 28L
Male
ISO 8434-1 12L
Male
ISO 8434-1 35L
Male
1¼˝ ISO 8434-1 35L
Male
1˝ BSP Female (B25T) single cooler
1¼˝ BSP Female (B120T) single cooler
1½“ BSP Female (serial connected cooler)
1˝
⅜˝
1¼˝
Optional
BSP
Function
Oil OUT to cooler
Oil IN from cooler
Oil OUT to cooler
Oil IN from cooler
¾˝ Oil OUT flushing motor(s) external pump
Oil OUT flushing with check valve
Oil OUT to brake 1
Oil OUT to brake 2
Drain from hydraulic motor(s)
1½“ BSP Female (GK400, GK600, PK600)
Water IN to cooler
Water OUT from cooler
* Only used on LS3 and LT3
Bosch Rexroth AB, Version 06.2020, RE 15326-WA
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Table 15: Hydraulic connections (American verion)
C1
Medium frame
ISO 8434-2 1" JIC Male
Large frame -
2 comp.
Large frame -
3 comp.
Function
ISO 8434-2 1-¼" JIC Male ISO 8434-2 1-¼" JIC Male Oil OUT to cooler
C2
C3*
ISO 8434-2 1" JIC Male ISO 8434-2 1-¼" JIC Male ISO 8434-2 1-½" JIC Male Oil IN from cooler
ISO 8434-2 1-¼" JIC Male Oil OUT to cooler
C4*
RF1
RF2
RB1
RB2
D
WA1
WA2
ISO 8434-2 ¾" JIC Male
ISO 8434-2 1" JIC Male
ISO 8434-2 ⅜" JIC Male
ISO 8434-2 1" JIC Male
½" NPT Female
1" NPT Female
1-¼" NPT Female single cooler
1" NPT Female
1-½" NPT Female
ISO 8434-2 1-½" JIC Male Oil IN from cooler
ISO 8434-2 ¾" JIC Male
ISO 8434-2 1" JIC Male
ISO 8434-2 ¾" JIC Male
ISO 8434-2 1" JIC Male
ISO 8434-2 ⅜" JIC Male ISO 8434-2 ⅜" JIC Male
1-¼" NPT Female single cooler
1-½" NPT Female (serial connected cooler)
Oil OUT to brake 1
Oil OUT to brake 2
ISO 8434-2 1-¼" JIC Male ISO 8434-2 1-¼" JIC Male Drain from hydraulic motor(s)
1" NPT Female single cooler
Water IN to cooler
Water OUT from cooler
1-½" NPT Female
Oil OUT flushing motor(s) external pump
Oil OUT flushing with check valve
* Only used on LS3 and LT3
Table 16: Pump connections DUc
Pump type
Dimensions main connection
A&B
SP40
Thread
3/8-16" UNC
Depth of threaded holes mm in
21 0.8
Thickness std flange connections
L
3
Max dimensions mm in
19.0 0.7
Torque* Torque** mm
80 in
Nm lb · ft Nm lb · ft
+10% -0 +10% -0
3.1
43 32 60 44
SP71
SP125
SP180
SP250
SP355
SP500
SP750
3/4" SAE J518C
FLANGE CODE 62 - 6000 PSI
1" SAE J518C
FLANGE CODE 62 - 6000 PSI
1 1/4" SAE J518C
FLANGE CODE 62 - 6000 PSI
1 1/2" SAE J518C
FLANGE CODE 62 - 6000 PSI
2" SAE J518C
FLANGE CODE 62 - 6000 PSI
7/16"-14 UNC 27
1/2"-13 UNC
5/8-11 UNC
3/4-10 UNC
27
29
35
1.0
1.0
1.1
1.6
22.4 0.9
23.9 1.0
26.9 1.1
36.6 1.5
80
100
170
165
3.1
3.9
6.7
6.5
70
105
210
360
52
77
155
266
92
150
295
450
68
111
218
332
Comment: Connection directly at pump
*) Torque acc. to SAE J518-2 with class 8.8 or grade 5 screws. Included in delivery.
**) Torque acc. to SAE J518-2 with class 10.9 or grade 8 screws.
L
3
Fig. 26: Hose coupling
Dimensions accordning to ISO 12151-3:2004-01.
DD00072051
RE 15326-WA, Version 06.2020, Bosch Rexroth AB
40/88 Hägglunds DUc Drive unit | Installation
DD00098774
Fig. 27: Dimensions external connection points example DUc MS2
DD00098768
Fig. 28: Dimensions external connection points example DUc MT2
Bosch Rexroth AB, Version 06.2020, RE 15326-WA
DD00098777
Installation | Hägglunds DUc Drive unit 41/88
Fig. 29: Dimensions external connection points example DUc LS2
DD00098776
Fig. 30: Dimensions external connection points example DUc LT2
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DD00103956
Fig. 31: Dimensions external connection points example DUc LS3
DD00103957
Fig. 32: Dimensions external connection points example DUc LT3
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7.7 Control system
For installation and commissioning of the control system please see:
• RE 15330-WA for Hägglunds Spider
• RE 15422 for Hägglunds ICp
7.8 Mounting of air-oil cooler
The air-oil cooler is normally delivered separately to be mounted on the Drive Unit.
The following instructions are applicable for these cases only. Dimensions and placement of air-oil cooler see order specific Hägglunds DUc documentation.
For hydraulic and electric connections as well as pipe work and hoses, see respective section.
WARNING
The air-oil cooler coming loose from it‘s attachment
Risk of injury or serious injury
▶ The air-oil cooler has to be properly tightened to the bracket.
CAUTION
The air-oil cooler starts without warning. Particles may go together with the outgoing air flow.
Risk of injury
▶ Disconnect electric power to the air-oil cooler electric motor if working in the area of the airflow
NOTICE
Dirt in the system
Risk of damage to the equipment
▶ The coupling protections must be kept on until final assembly
DD00098780
Screw
ISO4014-M12x70 (Air-oil cooler)
ISO4014-M12x35 (Water cooler)
Washer
ISO7089-12-200HV-A4
Nut
ISO7040-M12-A4-80
Fig. 33: Parts for assembling of coolers
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44/88 Hägglunds DUc Drive unit | Installation
Air flow
BOL 725-2000
Air flow
HDC and
BOL 16-30 x 4
DD00098788
Fig. 34: Mounting of air-oil cooler step 1
Lift up the air-oil cooler.
Note! Never lift the air-oil cooler with lift eyes on the electric motor.
Mount the air-oil cooler on the brackets with screws,washers and nuts included in
the delivery. Check that all screws and nuts are properly tightened. (See Fig. 33 )
DD00098789
C1
C2
Fig. 35: Mounting of air-oil cooler, step 2
Connect hydraulic hoses included in the delivery.
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Installation | Hägglunds DUc Drive unit 45/88
Air-oil cooler mounted separately from drive unit
Distance = min A Distance = min A
DD00110147
Fig. 36: Recommended minimum space around air-oil cooler
In order to achieve the optimum cooling capacity the distance to the nearest wall should not fall below the height of the cooling element (dimension A), since only
in this way a proper air supply is ensured. See Fig. 36
HDC 050
HDC 060
HDC 080
HDC 085
HDC 090
HDC 100
HDC 200
BOL-16
BOL-30
BOL-400
BOL-725
BOL-950
BOL-1200
BOL-1600
BOL-2000
Table 17: Recommended minimum space around air-oil cooler
Cooler size
1512
413
526
504
619
732
732
937
1004
A mm
772
815
1035
1046
1356
1356
16.2
20.7
19.8
24.4
28.8
28.8
36.9
39.5
in
30.4
32.1
40.7
41.2
53.4
53.4
59.5
RE 15326-WA, Version 06.2020, Bosch Rexroth AB
46/88 Hägglunds DUc Drive unit | Installation
DD00107574
Fig. 37: Mounting of air-oil cooler HDC 200 with by-pass
If by-pass on the cooler is needed (see order specific Hägglunds DUc documentation). Mount the preassembled by-pass kit (including connectors, check valve
and hose) according to Fig. 37
Note!
The check valve must always be mounted at the top connection point and notice the flow direction on the check valve
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Installation | Hägglunds DUc Drive unit 47/88
7.9 Water connection
It is important that all piping to the Drive Unit is installed to provide sufficient working space for maintenance. The water-pipes and the cooler may need to be insulated to prevent from condensing water and from freezing in winter condition.
7.10 Mounting of water-oil plate cooler
Dimensions and placement of water-oil plate cooler see order specific Hägglunds
DUc documentation.
Lift cooler assembly only in bracket frame!
DD00098790
WA1
WA2 x 4
Fig. 38: Mounting of water -oil plate cooler DUc LT2 , step 1
Mount cooler assembly with screws and washers included in the delivery. (See Fig.
DD00098791
C2
C1
Fig. 39: Mounting of water -oil plate cooler, step 2
Mount hoses and cable contact.
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48/88 Hägglunds DUc Drive unit | Installation
7.11 Mounting of water-oil tube cooler
Dimensions and placement of water-oil tube cooler see order specific Hägglunds
DUc documentation .
Lift cooler assembly only in bracket frame!
DD00098792 x 4
Fig. 40: Mounting of water-oil tube cooler, step 1
Mount cooler assembly with existing screws, nuts and washers
WA1
C1
DD00098793
WA2
C2
Fig. 41: Mounting of water-oil tube cooler, step 2
Mount hoses, check that all screws and nuts are properly tightened.
Bosch Rexroth AB, Version 06.2020, RE 15326-WA
Water valve
Installation | Hägglunds DUc Drive unit 49/88
DD00098794
Fig. 42: Mounting of water valve for tube cooler, DUc LS2, LS3 step 3
Mount water valve. Check that all screws and nuts are properly tightened.
Water valve
DD00098795
Fig. 43: Mounting of water valve for tube cooler, DUc MT2, LT2, LT3 step 3.
Mount water valve and strap the cable to cooler bracket. Check that all screws and nuts are properly tightened.
RE 15326-WA, Version 06.2020, Bosch Rexroth AB
50/88 Hägglunds DUc Drive unit | Installation
7.12 Pipe work, internal
General
The Drive Unit should be placed as close to the hydraulic motor as possible, taking other circumstances (e.g. space, environmental conditions ) into consideration.
The main connections of the main pump and the hydraulic motor must always be fitted to the piping with hoses. We recommend to use shut off valves for the main lines A and B. The protections on all parts must be kept on until final assembly to avoid dirt in the system.
Storage of included components
The included components shall be stored according to 6.1: Storage of the packed
.
Handling of fittings
General
Inspect the sealing surfaces on the couplings visually before mounting. It must be free from any damages. Handle the couplings with care. Check that the sealing (if any) is in its right position, free from cracks and that it is saturated with oil.
The dirt protections on the fittings must be kept on until final assembly.
Flange fittings
The flange screws must be tightened crosswise.
Tube fittings, 24 o cone, soft seal (DIN 3861, ISO 8434-4), European version
• Tighten the union nut with a wrench until there is a noticeable force increase.
Then tighten a further 30° final assembly route.
• Use correct size of tool, to avoid fitting to be damaged and difficult to remove.
Tube fittings, JIC type, 37 o flare (SAE J514, ISO 8434-2) , American version
• Tighten the fitting nut with wrench until it stops. Tighten additional 1/4 turn to
1/2 turn.
• Use correct size of tool, to avoid fitting to be damaged and difficult to remove.
Cleaning
The pipes and hoses should be pre cleaned, inspected and sealed by the supplier.
If the pipes are field bent and installed the overall system must be carefully oil flushed to reach the required cleanliness level.
Mounting of hoses
Ensure that hoses not are stressed or twisted on installation, to avoid premature failure. Bend radius should conform to manufacturers recommendations.
Bosch Rexroth AB, Version 06.2020, RE 15326-WA
Installation | Hägglunds DUc Drive unit 51/88
Right
Right
Wrong
Wrong
Right
Right
Wrong
Wrong
Right Wrong
DD00073548
Fig. 44: Mounting of hoses
7.13 Electric connections
NOTICE
The system will not fullfill the functionallity
Damage to the customer equipment
▶ Installation of electrical equipment must in most countries be installed by licensed electricians (ref. to domestic laws)
▶ All electric equipment has to be installed and used by qualified personnel who are familiar with relevant safety requirements and domestic laws.
▶ Personal protective equipment necessary for the prevention of accidents at the mounting and operating site shall be provided in accordance with the regulations prevailing in the local country.
▶ Grounding shall be carried out according to local regulations before the electric equipment is connected to the main voltage. Grounding point is on the side of the frame.
▶ All electrical supply levels must be within the limits that the equipment is constructed for, see order specific Hägglunds DUc documentation and rating plate.
RE 15326-WA, Version 06.2020, Bosch Rexroth AB
52/88 Hägglunds DUc Drive unit | Installation
7.13.1 Control system box and additional box
Connect the cables to the terminals inside the control system box. For some features, there is an additional junction box next to the control system box. All external electrical connections must be connected according to the electrical drawings in the order specific Hägglunds DUc documentation.
7.13.2 Air-oil cooler
The main voltage and connection are marked on the electric motor marking plate.
Y or D Connection is done depending on supply voltage in accordance to Fig. 49
from MCC (Motor Control Center). The start and stop signal to control the MCC shall be connected according to the order specific Hägglunds DUc documentation.
Check direction of rotation, see air stream arrow in
Air flow
HDC and
BOL 16-30
Air flow
BOL 725-2000
DD00073642
Fig. 45: Air-oil cooler
7.13.3 Water valve connection - plate cooler
Connect the preassembled cable connector to the water valve on the top of the drive unit, only for DUc LT2 and LT3. See
. For MS2, MT2, LS2 and LS3 the plate cooler is already mounted on the drive unit within delivery.
7.13.4 Water valve connection - tube cooler
The water valve for tube cooler is already electrical connected to control system.
7.13.5 Oil heater
Connect the cables on the screw terminals inside the terminal box as shown in
For power and voltage see attached order specific Hägglunds DUc documentation and rating on the oil heater. The start and stop signal to control the heater shall be connected according to the order specific documentation
Star connection
3-phase 400 VAC
P
E
L
1
L
2
L
3
Connection
1-phase 230 VAC
P
E
L
1
O
DD00073642
Fig. 46: Connections terminal box, oil heater
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Installation | Hägglunds DUc Drive unit 53/88
7.13.6 Electric motor
The main voltage and connection are marked on the electric motor marking plate, see
.or
Y or D Connection is done depending on supply voltage in accordance to
from MCC (Motor Control Center).
Electric motor must be separatly grounded.
Main voltage and connection
Fig. 47: Example Siemens marking plate
DD00073641
Fig. 48: Example WEG marking plate
D -connection Y -connection
DD00108241
Fig. 49: D and Y connections
Table 18: Standard voltage
Standard voltage D
380 V /50Hz
400 V /50Hz
415 V /50Hz
440 V /60Hz
460 V /60Hz
480 V /60Hz
Standard voltage Y
660 V /50Hz
690 V /50Hz
DD00062668
RE 15326-WA, Version 06.2020, Bosch Rexroth AB
54/88 Hägglunds DUc Drive unit | Installation
7.13.7 Voltage equalization
External connection
The Hägglunds drive unit must be connected to external ground for voltage equalization.
The connection point of the Hägglunds drive unit is on the side of the frame to a
M8 bolt. Minimum required cable area for equalization connection is 10 mm 2
(0.016 in 2 ).
DD00098796
Fig. 50: Connection point
DD00103967
Fig. 51: Connection point
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Commissioning | Hägglunds DUc Drive unit 55/88
8 Commissioning
8.1 Before commissioning
General
• Read and understand this complete manual and the other attached technical documentation.
• Visually check the whole system for: signs of damage, incorrect circuitry, security of foundations.
• Check that the coupling between the electric motor and pump is properly mounted.
• The accumulator has to be filled with dry nitrogen to a pressure level in accordance with the attached order specific Hägglunds DUc documentation (the accumulator is normally precharged to approx. 2 bar (29 psi) at delivery due to transportation safety reason ). For filling point and thread size see
NOTICE
The system will not fullfill the functionallity
Damage to the customer equipment
▶ The accumulator must be charged with dry nitrogen from a bottle equipped with a pressure reducing valve.
Cleanliness
• The external hydraulic system must be thoroughly cleaned on the inside.
Pipe work
• The couplings has to be securely tightened.
• The pipe work must be properly cleaned.
• The pipe work has to be mounted free of stress.
• The lines has to be in accordance with installation drawing/piping plan.
Electrical
• Check that electric motor(s), control system and other electrical components are connected to the correct voltages.
• Check the function of electrical components and monitoring system manually.
Instruments that cannot be actuated can be checked for correct wiring and possibly operated manually. Level switch and indication should be checked when filling up the tank.
• Check interlock of electric motor.
• Check the stop sequence of the system at alarm.
8.2 Filling up the system with hydraulic fluid
Before filling
• Check that the correct type and quality of hydraulic fluid is used. Do not mix different types of hydraulic fluid without first checking with manufacturers.
• Check that the barrel with hydraulic fluid and tank/hoses not are contaminated with water or other substances.
RE 15326-WA, Version 06.2020, Bosch Rexroth AB
56/88 Hägglunds DUc Drive unit | Commissioning
Filling
Use a fluid filling pump unit with a filter rating of β10 ≥ 75.
Cleanliness in barrels with new oil is not clean enough for the system and has to be filtrated before filling up in to the system to avoid problems.
NOTICE
Dirty oil in the system!
Damage on the equipment!
▶ Only use the specific filling point in the Drive Unit to fill up the hydraulic system, see
Fig. 2, Fig. 3, Fig. 4 and Fig. 5
Always pump the fluid in through the female quick connection included in delivery.
The fluid filled into the system will be filtered through the drain filter. See
.
The tank must be filled with oil to the nominal level before starting for the first
Check the function of the level sensor and indication on the level gauge during filling up of the tank.
DD00098805
Fig. 52: Oil filling
WARNING
Leakage of hydraulic oil
Risk of personal injury
▶ Check the caution sign on the hydraulic fluid container and the warnings in section
.
▶ Avoid long contact between skin and hydraulic fluid.
▶ Remove any spilled oil from the floor, great risk to slip and fall.
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Tank model
130
220
300
350
400
600
700
900
Tank model
130
220
300
350
400
600
700
900
Table 19: Oil volume in tank
400
600
700
900
130
220
300
350 litre
Volume
US gallon
34.3
58.1
79.2
92.4
105.7
158.6
184.9
237.8
Nominal level
Distance from top Signal mm in mA
87
82
83
83
85
95
80
125
3.43
3.23
3.27
3.27
3.35
3.74
3.15
4.92
17.8
18.0
18.8
18.8
16.9
17.5
18.0
16.3
litre
110
175
245
290
280
420
520
700
Volume
US gallon
29.0
46.2
64.7
76.6
74.0
111.0
137.4
184.9
Warning level
Distance from top mm in
175
299
230
289
270
357
358
388
6.89
11.77
9.06
11.38
10.63
14.06
14.09
15.28
Signal mA
11.7
9.5
12.2
9.9
10.6
7.2
12.6
11.9
425
625
715
915
137
234
318
385 litre
Volume
US gallon
36.1
61.8
84.0
101.7
112.3
165.1
188.9
241.7
Max level
Distance from top mm
53
50
39
57
49
44
60
60 in
2,09
1.97
1.54
2.24
1.93
1.73
2.36
2.36
litre
90
160
223
260
260
390
490
650
Volume
23.7
42.2
58.9
68.6
68.6
103.0
129.4
171.7
Alarm (Stop) level
Distance from top mm in
266
637
290
371
300
403
404
465
10.47
25.08
11.42
14.61
11.81
15.87
15.91
18.31
Signal mA
19.3
19.5
19.3
19.3
18.7
19.2
19.6
19.0
Signal mA
6.7
9.4
5.5
6.5
6.8
9.8
11.6
10.2
DD00098816
Visual level gauge
Point of measure
Fig. 53: Point of measure
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58/88 Hägglunds DUc Drive unit | Commissioning
8.3 Flushing before start up
A pressure filter and check valve has to be connected to the main line at the Drive
Unit. This filter is connected on the return side of the drive pump.
Recommended filtration degree β10 ≥ 75.
The size of the flushing filter should be matched to the installed pump, so that the pressure drop across the filter not is excessive and that the max. pressure/flow ratings for the filter not is exceeded.
The main lines should be connected together at the motor side enabling the entire system to be flushed, see
If the system not is fitted with a flushing line to the hydraulic motor, the drain line from the motor has to be plugged.
If the system is fitted with a flushing line to the hydraulic motor, the flushing line shall be connected to the drain line of the motor to enable cleaning of the flushing line.
CAUTION
Wrong direction of rotation of the pump
Pump will be damaged. System contaminated
▶ Make sure that the pump has the correct direction of rotation. The correct direction of rotation is marked with a sign placed under the electric motor, see
Fig. 55: Direction of rotation .
Rotating parts!
Risk of injury.
▶ Do not touch rotating parts inside the inspection hole see
Fig. 55: Direction of rotation
.or in the zone of rotating parts.
The maximum flow from the Drive Unit should be flushed through the main circuit for at least 2 hours on small installations and considerably longer time on large installations. Use extreme caution to ensure pump is stroked in sync with free flow direction of check valve. Use a check valve sized for the oil flow.
When using the main pump the maximum pressure should be reduced.
After cleaning and flushing of the system, particle content has to be verified with oil sample test, inline cleanliness measurement or corresponding.
High cleanliness is important for long lifetime of the hydraulic system.
DD00073833
Hoses connected together
Flow direction
Flushing filter
Check valve
Drive Unit
Fig. 54: Hydraulic circuit flushing
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8.4 Initial start up procedure
Important
• Follow section
• Make sure the driven system and driven machine is ready to run.
• Warn all personel in the area that the system will be started.
• Never operate the Drive Unit with defective instruments or control elements.
• Keep inflammable materials away from the Drive Unit.
• During start-up period, the hydraulic system will be cleaned from built-in dirt particles, therefore keep an eye on the filter indicator during the entire start up procedure.
STEP 1
Immediately before starting
• Check that the prescribed steps in section
have been carried out.
• Check fluid level in the tank and refill to the nominal level, see
8.2: Filling up the system with hydraulic fluid
• Check if any components need filling with clean hydraulic fluid, i.e. motor case.
• Check safety equipment.
• Make sure that all valves on the suction, pressure and inlet side of the pump, as well as any valves on drain lines, are open.
• Check that cooling water is connected and turned on if a water-oil cooler is used.
• For adjustments and settings on the control system (if any) see special instruction in attached order specific Hägglunds DUc documentation.
STEP 2
Start with unloaded pump at short intervals
Starting of the Drive Unit shall be carried out with a completely unloaded pump in short intervals.
CAUTION
Wrong direction of rotation of the pump
Pump will be damaged. System contaminated
▶ Make sure that the pump has the correct direction of rotation. The correct direction of rotation is marked with a sign placed under the electric motor, see
Fig. 55: Direction of rotation
.
Rotating parts!
Risk of injury.
▶
• When the hydraulic fluid is cold some restarts may be needed to raise the charge pressure.
• Check the charge pressure level and confirm with data and settings on attached order specific Hägglunds DUc documentation.
• If OK, the pump may be allowed to come on stroke and introduce flow into the unloaded hydraulic system. Check that the charge pressure is still OK.
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60/88 Hägglunds DUc Drive unit | Commissioning
DD00098820
Inspection hole
Fig. 55: Direction of rotation
STEP 3
Unloaded pump at longer intervals
• Run for a period at no load condition until system is stable and control is established.
• Check fluid level in the tank.
• Filling up the system with fluid may be needed as parts of the system has been filled up.
• Check for unusual noises or vibrations.
• Check that the specified pressure levels for charge pressure and control pressure at the Drive Unit are maintained in accordance with the values stated on the hydraulic diagram in the order specific Hägglunds DUc documentation. These pressure levels are preset at the factory and normally not needed to readjust.
• Check for leakage points.
• Stop the electric motor and correct if any faults discovered on the points above.
• Check all connections, screws etc. and tighten if necessary.
• Restart when finished.
STEP 4
Loaded hydraulic system
• The hydraulic system can be loaded when the hydraulic system functions works satisfactorily in unloaded running condition.
• Gradually increase load until satisfactory operation is obtained.
• It may be necessary at this point to make adjustments to flow, ramp rates, etc.
• Cycle the system until normal operating temperature is reached.
• If system will run with speed feedback, check and adjust feedback regulator parameters.
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STEP 5
Check:
• Unusual noises or vibrations.
• Function of the safety equipment.
• Temp in tank and closed loop. Check also that the cooler control is stable. If not, investigate water supply, controls, air-oil cooler, etc.
• Leakage points.
• Pump compensator pressure control and pressure switches (optional). At delivery, these pressure levels are set according to the order specific hydraulic diagram and normally no readjustment will be necessary. Pump compensator pressure can be checked by closing the valve on the high pressure leg and stroke the pump until the pressure is indicated on the control system display or on an optional gauge.
STEP 6
After test
• Correct any faults discovered at the points above.
• Check the filter indicator. It might be necessary to change filter elements due to particles from the piping. When changing filter elements carefully follow the instructions in
9.3: Filter change to avoid dirt into the system. If there still is dirt
in the system, additional flushing is necessary in order to prevent premature failure of system components.
• Check all connections, screws etc. and tighten if necessary.
8.5 Pump settings and adjustments
8.5.1 Variable displacement SP pump
Charge pressure level, control pressure level, high pressure relief valves and pressure compensator are set from factory and there is normally no need for readjustment. Check always the pressure levels in the attached order specific
Hägglunds DUc documentation.
Setting of pressures on the pump(s) must be performed by skilled service personnel familiar with the functions and risks involved with the pump. The pressures shall be set during operation of electric motor and with the system at operating temperature. Note that pressures can change with different viscosities.
1. Charge pressure adjustment
To adjust the charge pressure the pump shall be in neutral position (zero displacement). Release the lock nut, and adjust the charge pressure to the necessary level by turning the setting screw. The charge pressure shall normally be set to 15 bar (220 psi). On application with high shock loads, example shredders, the charge pressure shall preferably be set to 20 bar (290 psi).The charge pressure shall be measured at port MK4.
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62/88 Hägglunds DUc Drive unit | Commissioning
2. Control pressure adjustment
The control pressure to be measured at port E2. The control pressure shall be adjusted to: 30 1) bar/435 1) psi + (p n
–p s
) with the pump in neutral/zero stroke position.
Special for pump size SP355 , adjust the pressure to:
35 1) bar/508 1) psi + (p n
–p s
) with the pump in neutral/zero stroke position. (p n
- p s
)
= should be about 5-12 bar [73-175 psi], depending on the pump size and electric motor speed. Release the lock nut and adjust the control pressure to the necessary level by turning the setting screw.To get the value p n
measure the pressure in ME3port with the pump in neutral. To get the value p s measure the pressure in ME3port with the pump swivelled out to >50 % stroke (Secure that the flushing valve has moved).After adjustment tighten the setting screw by means of the lock nut.
Note 1) This pressure has to be 2 x charge pressure + 5 bar/73 psi (SP355)
3. High pressure relief valves setting A and B side
For setting levels see the order specific Hägglunds DUc documentation.
The high pressure relief valve setting should be 40 bar [580 psi] > compensator pressures setting.
To adjust the high pressure relief valves A/B-ports have to be blocked and the compensator pressure level have to be adjusted down to minimum.
Swivel the pump to ~50 % stroke in A-side and adjust the compensator pressure up to the requested high pressure level (high pressure relief valves setting).
Adjust the high pressure relief valve A-side down to the same level as to the recently set compensator level. Read the working pressure in M1 port (SP40-180) or MAB-port (SP250-750)
After that do the corresponding procedure on B-side.
Notice!
The high pressure relief valves must be adjusted before the compensator pressure adjustment.
4. Pressure compensator setting
Release the lock nut and adjust the setting screw. The pressure compensator shall be adjusted with blocked main-port or blocked actuator. Stroke the pump to about
50% of max flow. Set the compensator pressure to a value according to the order specific Hägglunds DUc documentation. Measure the pressure at port M1 (SP40-
180) or MAB (SP250-750).
5. Manual control of flow on SP pump
The SP pump flow can be controlled manually with a button on each side of the pump controller. The manual control must be handled with high precaution as this will override all interlock of the drive.
CAUTION
Manual control of pump
Risk of personal injury or damage of epuipment
▶ Use with high precaution
Bosch Rexroth AB, Version 06.2020, RE 15326-WA
A
Commissioning | Hägglunds DUc Drive unit 63/88
View A
B
View B
Pressure relief valve A
Control pressure relief valve
Fig. 56: Pump SP40-SP71
DD00073834
Compensator pressure setting
DD00073836
Charge pressure relief valve
Pressure relief valve B
DD00073838
Pressure relief valve A
Control pressure relief valve
Pressure relief valve B
Control pressure relief valve
Compensator pressure setting
DD00073842
Fig. 57: Pump SP125-SP180
Charge pressure relief valve
Pressure relief valve B
SP 125
Charge pressure relief valve
Pressure relief valve A
SP 180
DD00073838
View A
Control pressure relief valve
High pressure relief valve A
Compensator pressure setting
DD00073844
A
SP250 + SP355
Fig. 58: Pump SP250-SP750
High pressure relief valve B
Charge pressure relief valve
DD00073846
Compensator pressure setting
SP500 + SP750
DD00073848
RE 15326-WA, Version 06.2020, Bosch Rexroth AB
64/88 Hägglunds DUc Drive unit | Maintenance and repair
9 Maintenance and repair
9.1 Maintenance log
We recommend that a maintenance log is kept to record service/maintenance/ repair, addition and alteration of the equipment. Each note, observation or comment should be dated.
9.2 Preventive maintenance
Common
The maintenance of hydraulic systems is designed to prevent failure of the system and to keep the system running efficiently to specification. The specific procedures will depend on the nature of the equipment, the environment it is working in and the duty cycle, bearing in mind the consequences of a breakdown. To optimise the maintenance intervals economically a Life Cycle Cost (LCC) analysis is recommended.
Follow the 2: Safety instructions
during the checks.
The panels covering the Drive Unit can be dismounted by opening the lever latches or removing the M8 nuts to simplify the access to the components inside the unit.
CAUTION
Drop of panels
Risk of injury.
▶ Be two persons when lifting the panels if weight is more than 20 kg (44 lb).
Daily checks, first week after commissioning
Fluid leaks
Fluid level in the tank
Operating temperature
System pressure
System performance and general condition
Unusual noises
Contamination indicators on the filters
Pre-start checks (even daily)
Fluid leaks
Fluid level in the tank
The suction valve is open
Contamination indicator on the filters
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Frequent checks
Unusual vibrations or noises
Fluid leaks
Fluid level in the tank
The unit is clean
The air flow paths not are blocked
Pressure levels normal - stable
Actuator speeds normal - stable
Operating temperature
The drive is running smoothly
Contamination indicators on the filters
Check and clean the oil pan
Scheduled maintenance
Planned maintenance at specific time intervals, including the following checks and actions:
All points under frequent checks
Check all pressure levels
Check for stable temperature levels around the system
Drain water and sludge from the tank at the drain tap
Check the electric motor
Check the function of monitoring equipment/switches, etc
Cleaning.
NOTICE
High pressure washing
Damage on equipment
▶ Never use a high pressure washing system to clean inside the Drive Unit
Check the cables
Check drain line flows and drain line oil condition
Check the hoses, couplings and pump(s), with respect to cracks, leakages and condition
Check the shaft coupling through the inspection hole.
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66/88 Hägglunds DUc Drive unit | Maintenance and repair
CAUTION
Rotating parts!
Risk of injury.
▶ Do not touch rotating parts inside the inspection hole see
Fig. 55: Direction of rotation
. or in the zone of rotating parts.
Check the cooling water flow
Check that the cover of the DUc not are damaged
Table 20: Maintenace chart
Absolute max. intervals for major inspection and replacement
After the first 100 working hours
After 3 months or 500 working hours
Once every 3 months
Accumulator
-
-
I**
Air inlet
-
-
-
Oil filters
R*
R*
-
Air breather on tank
-
-
-
Once every 6 months
Once every 12 months -
I I
-
-
R*
-
R
I = Inspection
R = Replacement
*If the contamination indicator is tripped out, the filter must be changed immediately and the oil examined.
**For shock load applications, i.e. shredders, crushers etc.
Hydraulic fluid
-
I
-
-
-
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9.3 Filter change
WARNING
High temperature oil /componets
Risk of injury
▶ Do not open filters that are in operation
▶ Use suitable personal protective equipment
Weight of filter bowl
Risk of injury
▶ Be careful when dismounting the bowl
Pressurized machine/system
Danger to life or risk of serious injuries, damage to equipment
▶ Remove the filter bowl only if it is depressurized
▶ Do not exchange the maintenance indicator while the filter is under pressure
▶ Do not operate the switch-over lever during the filter element exchange
When removing a filter element take some time to inspect and look for unusual contamination within the pleats and in the bottom of the flter bowl. Contact your
Bosch Rexroth representative for advice.
Single filter
Stop the operation and lockout-tagout electric motor.
1. Loosen the drain plug under the filter bowl to empty from hydraulic fluid. Drain the oil into a clean container to be able to collect eventual contamination particles for analysis. When empty - tighten the drain plug.
2. Open the lock ring for the filter bowl. Unscrew the bowl from the filter housing counter clockwise and remove the bowl.
3. Change filter cartridge.
It is very important during the mounting not to expose the cartridge to any dirt i.e. keep it in the plastic cover as long as possible.
4. Check the O-ring and the backup ring for damage. Change parts if necessary.
5. Mount the filter bowl. Tighten by hand to stop and back off 1/8:th of a turn.
6. Tighten the lock nut.
RE 15326-WA, Version 06.2020, Bosch Rexroth AB
68/88 Hägglunds DUc Drive unit | Maintenance and repair
When removing a filter element take some time to inspect and look for unusual contamination within the pleats. Contact your Bosch Rexroth representative for advice.
Duplex filter
1. Engage the switching lever and turn the lever to the other direction to change
flow direction in the filter housing, see Fig. 59 .
2. Open the vent screw (do not unscrew it completely) at the switched off filter
3. side in order to reduce the pressure.
4. Loosen the drain plug under the filter bowl to empty from hydraulic fluid. When empty - tighten the drain plug.
5. Open the lock ring for the filter bowl. Unscrew the bowl from the filter housing counter clockwise and remove the bowl.
6. Change filter cartridge.
It is very important during the mounting not to expose the cartridge to any dirt i.e. keep it in the plastic cover as long as possible.
7. Check the O-ring and the backup ring for damage. Change parts if necessary.
8. Mount the filter bowl. Tighten by hand to stop and back off 1/8:th of a turn.
9. Tighten the lock nut
Vent screw
Switching lever
In this position you can change this element
DD00072849
Fig. 59: Duplex filter change
Table 21: Weight filter bowl
Filter size
Single/duplex filter 250 (25 bar)
Single/duplex filter 400 (25 bar)
Single/duplex filter 600 (25 bar)
Single/duplex filter 250 (210 bar)
Single/duplex filter 400 (210 bar)
Single/duplex filter 600 (210 bar)
Weight bowl (dry)
Kg lb
1.5
2.0
3.31
4.41
9.0
9.0
19.84
19.84
14.0
17.5
30.86
38.58
Weight cartridge (dry)
Kg lb
0.7
1.1
1.54
2.43
1.4
0.7
3.09
1.54
1.1
1.4
2.43
3.09
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9.4 Inspection of hydraulic fluid
CAUTION
Hot hydraulic fluid.
Risk of injury
▶ Use personal protective equipment
NOTICE
Danger associated to Hydraulic fluid.
Risk of environmental damage
▶ Store up used hydraulic fluid and contamined filter elements for destruction.
Different hydraulic fluids are affected differently - consult the manufacturer.
Oil analysis
The purpose to take an oil sample is to check the condition of the oil.
With scheduled oil analysis, wear products can be identified and corrective action can be taken before failure occurs. Oil analysis can indicate when an oil change is required, point out shortcomings in maintenance and keep repair cost to a minimum. Using oil analysis can create a “window of opportunity”, allowing the user to schedule, overhaul, maintenance or repairs, thus saving money on equipment repairs and downtime.
The most used method is to take samples in a special bottle and send it to a fluid laboratory for a analysis to get a report, following a specific international standard.
The analysis should cover viscosity, oxidation, water content, particle counting possibly including element analysis of particles.
Another method is to install an inline particle counter direct in your hydraulic system which give you the contamination level according to international standards. The disadvantage with this method is that you only get the contamination level in the oil.
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70/88 Hägglunds DUc Drive unit | Maintenance and repair
General
The intention is to verify the condition of the oil during operation. The motors should be running at normal operation while the sample is taken.
The cleanliness is extremely important during sampling.
Always use bottles adapted to oil samples, they can be ordered from any fluid analysis laboratory.
Never try to clean your own bottle if you want a true value of the result.
The sample should be taken by using a mini-mess hose connected to a mini-mess coupling.
Always clean the connections carefully before you connect the mini-mess hose to the coupling.
Check and be aware of the pressure you may have on the connection before you connect.
Be careful when connecting the mini-mess hose because the oil beam can be dangerous and should never point against any person or other sensible object.
Bottle samples
The sample shall be taken at the mini-mess coupling on the low pressure side of the motor in the main loop. Never take the sample out of the tank using the ball valves.
Clean the coupling and the hose carefully.
Connect the mini-mess hose to the coupling but be careful and be aware of the direction of the oil beam.
Let minimum 2 l (0,53 gal) of oil flush into a bucket before you fill the bottle.
Remove the cap of the bottle as late as possible and avoid any contamination to be in touch with the cap, bottle or mini-mess hose when the sample is taken.
To get a reliable result the system must run without moving any valves and the mini-mess hose should not touch the bottle.
Only ¾ of the bottle shall be filled because the laboratory has to shake the sample to get a mixed fluid when they analyse it. Minimum 0.2 l (0,053 gal) are needed for a good analysis.
When the bottle is filled close the cap as soon as possible to prevent contamination from the air to enter the bottle and give wrong result.
Inline measure
The measure can be taken at the mini-mess coupling on the pump low pressure side of the main loop system (MB or MA port depending on the main flow direction). Return flow can be connected to the mini-mess coupling on the pump
T(D) port. Clean the couplings and the hoses carefully before connection.
Connect the hoses according to the particle counter manual.
To get a true value of the contamination, readings have to be stable for 10 min.
9.5 Air filter breather change
1. Clean the area around the air filter breather. See
2. Remove the existing filter and dispose according to environmental regulations.
3. Mount a new filter and make sure no foreign material has entered the oil tank.
Bosch Rexroth AB, Version 06.2020, RE 15326-WA
Maintenance and repair | Hägglunds DUc Drive unit 71/88
9.6 Electric motor
9.6.1 Lubrication
For electric motors with regreasing system, relubrication intervals, grease quantity and grease grade are provided on the lubricant plate. Additional data can be taken from the electric motors rating plate.
Grade of grease for standard motors
• European version Unirex N3 - ESSO.
• American version Polyrex EM - ESSO
It is not permissible to mix different types of grease.
Procedure
To relubricate the rolling bearings, proceed as follows:
1. Clean the grease nipples at the drive end and non-drive end.
2. Press-in the specified grease and amount of grease according to the data stamped on the lubrication plate.
– Please observe the information on the rating and lubricant plates.
– Regreasing should be carried out when the motor is running (max. 3600 rpm).
Specified lubrication intervals are valid for 40 o C (104 o F) ambient temperature.
In case of other conditions, consult the electrical motor manual or the lubrication data plate on the electric motor for selection of type of grease and lubrication intervals.
CAUTION
Grease splash
Risk of injury
▶ Check the warning label on the grease cartridge
Grease nipple
NDE (Non drive end)
Grease nipple
DE (drive end)
Fig. 60: Grease nipples, electrical motor
DD000737879
RE 15326-WA, Version 06.2020, Bosch Rexroth AB
72/88 Hägglunds DUc Drive unit | Maintenance and repair
9.6.2 Air inlet
Check that the air inlets on the electric motor not are clogged by dirt and that air can pass easily.
9.6.3 Draining
The condensate drain holes must be opened at regular intervals, depending on climatic conditions.
NOTICE
Reduction of the degree of protection
Material damage to the motor
▶ After the condensation has been drained, all of the drain holes must be closed again
Bosch Rexroth AB, Version 06.2020, RE 15326-WA
Maintenance and repair | Hägglunds DUc Drive unit 73/88
9.7 Cooler
9.7.1 Cleaning
The cooler has to be cleaned when the temperature in the hydraulic system is above specified limits due to low cooling capacity.
Before cleaning:
• Stop the Drive Unit
• Disconnect the cooler from the main power supply
NOTICE
Improper handling
Environmental risk
▶ Follow the safety precautions on the container of the cleaning agent used
▶ Cleaning agent and waste water from rinsing should not be desposed in nature
Air-oil cooler
CAUTION
Hot cooler
Risk of burnes
▶ Make sure that the air-oil cooler has cooled down
Side of air fins
• The air fins can be cleaned with compressed air. If seriously soiled, cleaning should be done by means of a highpressure cleaner and degreasing agent. The jet should be kept carefully and in parallel with the air fin.
Oil side of cooling element
• The oil side of the cooling element is cleanded by flushing with a degreasing agent. Afterwards flush with the fluid/medium which is used later.
Water-oil cooler, plate type
Back-flushing with water will remove most soft deposit.
• If fouling appears in the form of hard deposits, circulate a weak acid through the cooler in reverse direction to the normal waterflow. Use 5% phosphoric acid or, for frequent cleaning, 5% oxalic acid or similar weak organic acid. Afterwards rinse with a large quantity of water to flush all acid from the cooler before starting up the system again.
Never wait until the cooler is completely clogged before cleaning.
Note!
To clean the water-oil cooler water valve must be opened, see 9.7.2
RE 15326-WA, Version 06.2020, Bosch Rexroth AB
74/88 Hägglunds DUc Drive unit | Maintenance and repair
Water-oil cooler, tube type (European version)
The cleaning procedure shall be carried out without removing the tube stack from the body.
• Drain the cooler from water.
• Remove the outer screws around the periphery on both ends. Do not remove the
nuts located between the end cover and the retaining flange. See Fig. 61
.
• Remove the end covers. Mark the cover so it can be reassembled in the same position.
• Remove the dirt by pushing a 3 mm rod through the tube. Flush the tubes with fresh water.
• Reassembling in reverse order. Be sure that the o-rings are in correct position and mount the end covers in correct position.
O-ring
End cover
DD00073883
Fig. 61: Exploded view, tube cooler
Water-oil cooler, tube type (American version)
The cleaning procedure shall be carried out without removing the tube stack from the body.
• Drain the water from the cooler using the provided drain port.
Oil chamber
• Flood the oil chamber with a commercial solvent and let soak for 30 minutes.
• Backflow with solvent or oil.
• Remove all chemicals from shell side before placing into service.
Cooling tubes
• Use a 50/50 solution of inhibited muriatic acid and water.
• Remove all chemicals from tube side before placing into service
Bosch Rexroth AB, Version 06.2020, RE 15326-WA
Maintenance and repair | Hägglunds DUc Drive unit 75/88
9.7.2 Manual override of water valve
To open the water valve manually, turn the knob with a screwdriver (clockwise).
Knob
Water-oil plate cooler
DD00098821
Fig. 62: Water valve at water-oil plate cooler
9.8 Drive Unit out of service
Periods out of service
1. Check system for leaks . All system pipe joints and rotating seals are to be checked to find if any leaks exists. Leaking pipe joint shall be immediately corrected, if possible by tightening. Joints that repeatedly continue to show leakage are to be replaced during off-season maintenance. Leaking rotating shaft seals are remarked in logbook and corrected during the off-season maintenance.A corrective action has to be verified under operation, which means that checking of leaks preferably is done two to three weeks in advance of shut down.
2. Topping up system oil . If necessary system oil shall be filled before the system is shut down for the off-season stop. Doing so means that the oil is well cleaned trough filters before shut down and reservoir bottom silt is avoided.
Note!
When system oil is filled, always use the power unit filling connection to ensure the oil to be filtered before entering the tank.
3. Air bleeding.
To avoid internal corrosion ensure that components are oil filled.
With the hydraulic pump in idling it is recommended to air bleed the pump as well as the hydraulic motor casings in conjunction with the final stop. The pump air bleeding is done at the upper most drain port (U1) on the pump casing by slowly open the hose connection nut and keep open until a smooth oil flow is coming through the threads. Air bleeding can be substituted by adding vapour active anti corrosion agent in to the oil before the planned shutdown.
Introduction of such additive shall be done a couple of weeks in advance to the stop. Quantities to be added shall be in accordance with supplier‘s recommendation.
RE 15326-WA, Version 06.2020, Bosch Rexroth AB
76/88 Hägglunds DUc Drive unit | Maintenance and repair
4. Stopping the drive system.
Final shut down is carried out as any normal drive stop only with the exemption that before the pump is stopped, in idling mode, the cooling water supply is cut. With this sequence, any risk for cooling water to entrain the oil through the cooler is avoided due to the higher pressure in oil circuit.Immediately after that the hydraulic pump has come to the final stop all ball valves installed in the hydraulic main loop shall be closed to avoid any risk for the oil to drain back to the tank. Similar the pump suction line/s also shall be closed.
5. Check of water in oil.
To check status of cooler water leakage, drain some quantity of oil from the tank bottom using the drain cock valve located at tank front. If any water or milk similar oil drain from the tank, it is necessary to locate the leak and correct before next start. If such quantities of water are found, change of oil may also be required.
Take an oil sample to check the condition of the oil, see part
6. Change of filters.
The hydraulic drive is equipped with different filters for hydraulic oil and air breathing of tank. None of these filters are cleanable and has to be changed, see
and
In conjunction with changing drain line filter, inspection of the same can be used to monitor status on pumps and motors. If the filter surface shows high quantity of wear debris, the reason for this shall be located and corrected. If the debris appears grey, the hydraulic motor wears extensively. Yellow or bronze debris indicates wear in the hydraulic pump.
7. Cleaning of coolers.
Clean the coolers acc to part
8. Electric motor lubrication
Re-commissioning
Before the plant is re-started after a long stop period, a check must be done to verify the system function.
Meassures to be done:
• Remove preservative fluid and any signs of contamination.
• Follow the procedure in
8.4: Initial start up procedure
.
9.9 Repair
Bosch Rexroth offers a comprehensive range of services for the repair of Hägglunds products.
Repairs on the Hägglunds products may only be performed by service centers certified by Bosch Rexroth.
▶ Use exclusively original spare parts from Bosch Rexroth to repair the Hägglunds product, otherwise the functional reliability of the product can not be assured and you lose your warranty entitlement.
In the event of questions regarding repairs, contact your responsible Bosch
Rexroth service partner or the service department of the manufacture‘s plant for the
Hägglunds product, see
Bosch Rexroth AB, Version 06.2020, RE 15326-WA
Maintenance and repair | Hägglunds DUc Drive unit 77/88
9.10 Spare parts
Address all questions regarding spare parts to your responsible Bosch Rexroth
Service partner or the service department of the manufacturer‘s plant for the
Hägglunds products. Details can be found on the name plate of the Hägglunds product.
CAUTION
Use of unsuitable spare parts
Spare parts that do not meet the technical requirements specified by Bosch
Rexroth may cause personal injury or property damage.
▶ Use exclusively original spare parts from Bosch Rexroth to repair the
Hägglunds product, otherwise the functional reliability of the Hägglunds product can not be assured and you lose your warranty entitlement.
Recommended spare parts (typical example).
For exact spares and order numbers, see order specific documentation
Commisioning/startup spares:
• Filter insert (drain oil)
• Filter insert (return oil)
• Ring gear (motor/pump coupling)
• Air filter (tank)
• Air filter (tank bladder)
Operational/essential spares:
• Proportional solenoid (pump)
• Position switch (pump suction valve)
• Temperature sensor (tank)
• Control circuit card
• Float switch (oil temp and level sensor)
• Pressure transducer (work pressure)
• Pressure transducer (charge pressure)
• Pressure switch (accumulator)
• Water valve
• Cartridge heater (tank)
• Shaft coupling
• Display unit
• Compensator (tank bladder)
• Accumulator
Capital/insurance spares:
• Axial piston pump (main pump)
• Hy-gear pump (auxillary pump)
• Asynchron.motor 3-phase (main electric motor, auxillary electric motor)
• Air-oil cooler
• Water-oil cooler
RE 15326-WA, Version 06.2020, Bosch Rexroth AB
78/88 Hägglunds DUc Drive unit | Removal and replacement
10 Removal and replacement
10.1 Common
Before removing any hydraulic/electric components, disconnect the Drive Unit.
Make sure that the electric motor power is disconnected and locked and that
no energy is accumulated in the system. Follow instructions in chapter 2: Safety instructions
Before disassembly:
• Clean all assemblies and components.
• Take all precautions necessary to prevent dirt entering the system.
• Disassembly shall only be done by professional service personnel.
Disassembly:
• Label the parts
• Protect easily damaged parts and machined surfaces.
• Inspect all parts during disassembly for wear or damage.
• If hydraulic fluid will be drained and reused, make sure that drain containers are clean and covered when not in use.
• Clean all metal parts with a suitable solvent and set aside on a clean and lintfree cloth to drain.
Reassembly:
• Replace all seals, gaskets and o-rings with new items of the correct size and lubricate with system hydraulic fluid before assembly.
•
Refill hydraulic fluid according to section 8.2: Filling up the system with hydraulic fluid
Bosch Rexroth AB, Version 06.2020, RE 15326-WA
Disposal | Hägglunds DUc Drive unit 79/88
11 Disposal
WARNING
Danger when dismantling, components may contain accumulated energy
Risk of injury
▶ Check that the Drive Unit is completely disconnected.
▶ Check pressure in the accumulator (if applicable).
▶ Take the fire hazard into consideration during dismantling.
11.1 Environmental protection
Careless disposal of the Hägglunds DUc, the hydraulic fluid and the packaging material could lead to pollution of the environment.
Observe the following points when disposing of the Hägglunds DUc:
1. Completely empty tank and system.
2. Dispose the hydraulic fluid according to the national regulations of your country. Also observe the applicable safety data sheet for the hydraulic fluid.
3. Remove the DUc into its individual parts and properly recycle these parts separate according to material type. Dispose material in accordance with the national regulations in your country. The main materials for respective component is to be found in the data sheet RE 15326 Hägglunds DUc .
12 Extension and conversion
Do not modify Hägglunds products. Please contact your Bosch Rexroth representative for extension or conversion.
RE 15326-WA, Version 06.2020, Bosch Rexroth AB
80/88 Hägglunds DUc Drive unit | Troubleshooting
13 Troubleshooting
Causes Of Trouble And Its Effect In The Hydraulic Installation
Source of trouble, effects
Excessive noises
Mechanical Drive Suction Line
Insufficient power and torque at the hydraulic motor
(pressure too low)
Jerky motor movements.
(variations in pressure and/or flow)
Foaming of the hydraulic fluid
Pump Pressure Line Return Line
1. Coupling wrongly aligned
2. Coupling loose
3. Coupling defective
4. Loose mounting on pump and/or motor 5. Other transmission elements loose.
(V- belts, Toothed belts(etc)
6. Pump or motor defective
7. Direction of rotation wrong
8. Noise dampening not incorporated in design (rubber- metal mountings)
1. Power transmission defective
2. V-belt or
Toothed belt slipping
3. Direction of rotation wrong
4. Motor defective
5. Key sheared at pump or motor
1. Coupling wrongly aligned
2. Coupling loose.
3. Coupling defective
4. Loose mounting on pump and/or motor
5.Other transmission elements loose
6. Pump or motor defective
7. Direction of rotation wrong
Suction line resistance excessive because:
1. Suction valve is closed or only partially open
2. Suction filter clogged or too small (if fitted)
3. Suction line blocked or leaking
4. Suction line has wrong dimensions
(ie pipe bore ), or too many bends.
5. Fluid level too low
1. Pump is running too fast
2. Maximum pump pressure exceeded
3. Boost pump defective
4. Shaft seals, or seals on suction side are defective
5. Pump defective
6. Pressure and return lines connected wrongly
7. Control system oscillating
8. Noise dampening not incorporated in design
1. Line mounts missing or loose
2. Poor installation
3. Pipe bore too small
4. Installation not bled completely
1. Line mounts missing or loose.
2. Poor installation
3. Pipe bore too small
4. Installation not bled
5. Return terminates above fluid level
6. Return filter blocked
Suction resistance is excessive :-
1. Valve in the suction line is partially open
2. Suction filter clogged or too small (if fitted)
3. Suction line blocked or leaking
4. Suction line is sized wrong
5. Fluid level too low
1. Internal leakages due to wear
2. Unsuitable type
3. Pump defective
4. End-of-control pressure set too low, or control element defective
1. With variable pumps, the control system is defective
2. Pump defective
3. System conditions react on the pump control system
4. Unsuitable pilot valve
1. Leakages
2. Excessive line resistance
3. Pressure filter blocked
1. Installation not bled completely
1. Excessive line resistance
2. Filter blocked
1. Excessive line resistance
2. Filter blocked.
1. Suction line leaks
2. Fluid level too low
3. Wrongly designed reservoir.
1. Shaft seals on the suction side are defective.
2. Case drain line terminates above the fluid level.
1. Return line terminates above the fluid level.
2. Vortex effect due to wrongly positioned lines
Bosch Rexroth AB, Version 06.2020, RE 15326-WA
Troubleshooting | Hägglunds DUc Drive unit 81/88
Pressure Valves
1.Valve chatter due to dirt on valve seal
2.Insufficient damping
(unsuitable flow)
3.Flow noises when operating
4.Unsuitable characteristic curve
5.Wrong design
Causes Of Trouble And Its Effect In The Hydraulic Installation
Flow Control
Valves
1.The valve oscillates and excites other control elements into oscillation
2.Flow noises
3.Control system oscillating
Directional
Control Valves
1.Valve chatters due to defective solenoid or the voltage is too low
2.Valve defective due to dirt or wear
3.Flow through valve is excessive
4.Pilot pressure variations
5.On valves with adjustable damping the adjustment has not been performed
6.Check the electrical controls
Fluid
1.Cavitation problems due to low fluid level or viscosity too high.
(fluid temperature is too low)
2.Fluid is contaminated and dirty leading to damage and blockage of equipment
3.Fluid foams
Output Drive
(motor)
1.Wear of running surfaces
2.Control system oscillating
Others
1.Operating pressure set too low
2.Internal leakage due to wear
3.Dirty or damaged valve seat
4.Broken spring
5.Unsuitable type.
(setting too low)
1.Pressure losses excessive
2.False setting
3.Valve defective
4.Unsuitable type
1.Wrong switched position (eg pressureless)
2.Solenoid defective
3.Internal leakage due to wear
4.Excessive fluid velocity
5.Spool jams
1.Viscosity too low, causing excessive leakage.
2.Viscosity too high causing excessive flow resistance
3.Fluid foams.
1.Internal Leakage
2.Wear or running surfaces
3.Excessive internal friction causing low efficiency
1.In the case of pressure controls there is a defect in the open (or closed) loop control circuit
2.Display instruments are defective
1.Valve chatter due to dirt on valve seat or valve worn
2.Insufficient damping
(unsuitable type)
3.Excessive length of undamped remote control line
4.Unsuitable remote- control valve
1.Valve dirty
2.Pressure losses excessive
1.Valve chatters due to defective solenoid or the voltage is too low
2.Valve defective due to dirt or wear
3.Flow through valve is excessive
4.Pilot pressure variations
5. Adjustable damping on valves, has not been set
6.Check the electrical controls.
1.Hydraulic fluid dirty
2.Hydraulic fluid foams.
1. Unsuitable fluid for the duty.
1.Stick-slip effect due to friction
2.Operation below minimum recommended motor speed.
1.Insufficient load counterbalance (eg lowering control valve)
RE 15326-WA, Version 06.2020, Bosch Rexroth AB
82/88 Hägglunds DUc Drive unit | Troubleshooting
Source of trouble, effects
Power Take-off either does not turn at all or too slowly. (no delivery flow or insufficient delivery flow)
Causes Of Trouble And Its Effect In The Hydraulic Installation
Mechanical Drive Suction Line
1. Coupling wrongly aligned.
2. Coupling loose.
3. Coupling defective.
4. Loose mounting on pump and/or motor.
5. Other transmission elements loose.
6. Pump or motor defective.
7. Direction of rotation wrong.
Pump
Suction resistance is excessive :-
1. Valve in the suction line is part open.
2. Suction filter clogged or too small (if fitted).
3. Suction line blocked or leaking.
4. Suction line is sized wrong.
5. Fluid level too low.
1. Internal leakage due to wear.
2. Pump defective.
3. Inlet and return lines wrongly connected.
Pressure Line
1. Leakages.
2. Excessive line resistance.
3. Pressure filter blocked.
Excessive operating temperature
Return Line
1. Excessive line resistance.
2. Filter blocked.
1. Reduction in efficiency due to wear.
2. With variable pumps, the pump control system is defective.
3. Rotational speed and/or delivery excessive.
1. Pipe bore is too small, causing high frictional resistances.
2. Pressure filter blocked.
1. Pipe bore is too small, causing high frictional resistances.
2. Return filter blocked.
Line shocks when switching takes place.
The pump switches on and off too often.
1. Pump defective.
2. In the case of accumulator systems, the pump is incorrectly sized.
1. Line mounts are missing or loose.
2. Poor installation.
3. Pipe bore too small.
4. Installation not bled.
5. Oil volume in lines is excessive
1. Lines loose.
Bosch Rexroth AB, Version 06.2020, RE 15326-WA
Troubleshooting | Hägglunds DUc Drive unit 83/88
Pressure Valves
1. Operating pressure set too low.
2. Internal Leakage due to wear.
3. Dirty or damaged valve seat.
4. Broken spring.
5. Unsuitable type
(setting range too low)
Causes Of Trouble And Its Effect In The Hydraulic Installation
Flow Control
Valves
1. Flow rate set too low.
2. Unsuitable valve type
(operatingrange too low).
3. Valve blocked due to dirt.
Directional
Control Valves
1. Wrong switched position.
2. Solenoid defective.
3. Internal leakage due to wear.
4. Excessive fluid velocity.
5. Spool jams or sticks.
6. Manually operated valves are not open.
Fluid
1. Viscosity too low, causing excessive leakage.
2. Viscosity too high, causing excessive flow.
3. Fluid foams.
Output Drive
(motor, cylinder)
1. Internal leakage.
2. Wear of running surfaces.
3. Excessive internal friction, causing low efficiency.
4. Seizure in
Hydraulic motor.
Others
1. Conditions for starting not fulfilled.
2. Electrical lines opencircuit
3. Signalling elements, such as pressure or limit switches, are defective, wrongly set, or not connected.
1. Constant delivery flow is too high.
2. Undersized valve.
3. Pressure setting too high.
4. Response time too long.
1. Flow rate set too low (excessive pump delivery through pressurerelief valve).
2. Valve defective.
1. Leakage losses too high.
2. Pressure less oil circulation if used, fails to switch on.
3. Spool sticking.
1. Viscosity too low, causing excessive leakage.
2. Viscosity too high, causing excessive flow resistance.
3. Fluid foams.
1. Valve switches too quickly.
2. Restrictors or orifices are damaged or missing.
1. Switching time set too short.
2. Unsuitable type of valve
(the opening cross-sectional area changes too quickly).
1. Foaming of the hydraulic fluid.
1. Losses in efficiency due to wear.
2. Internal friction too high (poor level of efficiency).
3. Internal leakage losses.
1. Excessive masses or forces.
2. No damping.
1. Cooling performance inadequate.
2. Pressure less oil circulation when the pump is running.
3. Insufficient hydraulic fluid.
4. Coolant valve failed.
5. Thermostat set too high.
6. Fan not switched on.
7. Ambient too high.
8. Deposits in radiator.
1. In accumulator systems, throttle valves have not been fitted in front of the switching valves.
1.Sequence valve or shut-off valve has wrong setting.
1. Accumulator precharge pressure is too low.
2. Bladder defective.
3. Pressure switch differential set too low.
4. Pressure switch set incorrectly.
RE 15326-WA, Version 06.2020, Bosch Rexroth AB
84/88 Hägglunds DUc Drive unit | Technical data
14 Technical data
14.1 Weights
Total weight of the Drive Unit
The total weight of the Drive Unit, is marked on the product identification located on the cabinet frame, see
30
37
45
55
75 kW
3
7,5
11
15
18,5
22
315
355
400
500
90
110
132
160
200
250
Table 22: Weight electric motor
Siemens
Weight lb
66
141
183
220
364
375
529
628
705
926
1 257
1 477
1 676
2 116
2 183
2 623
2 923
3 644
4 467
4 665
5 062
240
285
320
420
570 kg
30
64
83
100
165
170
670
760
960
990
1 190
1 326
1 653
2 026
2 116
2 296
WEG
40
50
60
75
100 hp
5
10
15
20
25
30
450
500
550
600
125
150
200
250
300
350
650
Weight lb
95
165
251
291
388
437
492
536
869
1 118
1 140
1 590
1 675
2 094
2 094
2 381
2 674
3 395
3 461
4 334
4 334
4 394
223
243
394
507
517 kg
43
75
114
132
176
198
721
760
950
950
1 080
1 213
1 540
1 570
1 966
1 966
1 993
Bosch Rexroth AB, Version 06.2020, RE 15326-WA
Technical data | Hägglunds DUc Drive unit 85/88
Table 23: Weight pump
Pump kg
SP40
SP71
SP125
SP180
74
98
150
158
SP250
SP355
SP500
SP750
267
277
394
540
Weight
163
216
331
348
589
611
869
1 191 lb
Table 24: Weight air-oil cooler
Air-oil cooler type
HDC 050-4
HDC 060-4
HDC 080-4
HDC 085-6
HDC 090-6
HDC 100-4
HDC 100-6
HDC 200-4
HDC 200-6
BOL-16
BOL-30
BOL-725
BOL-950
BOL-1200
BOL-1600
BOL-2000
Table 25: Weight water-oil cooler
Plate cooler type
Weight
B15-30 kg
4
B025T-40
B025T-80
12
21
B120T-60
B120T-80
B120T-120
32
40
55 lb
9
25
46
71
88
121
Attachment kit
SP40 + SP40
SP71 + SP71
SP125 + SP125
SP180 + SP180
SP250 + SP250
SP355 + SP355
SP500 + SP500
57
77
136
195
234
264
196
429
357
25 kg
38
60
101
131
173
222
Tube cooler type
FC160
GK400
GK600
PK600
B-700
B-1000
B-1200
B-1600
Weight kg
11
54
74
158
14
29
73
181
25
29
33
4
5
10
10 kg
Weight
55
64
73
9
11
22
22 lb
Weight
125
170
300
430
515
582
432
946
787
55
Ib
84
132
223
289
381
489 lb
24
119
163
348
30
65
160
400
RE 15326-WA, Version 06.2020, Bosch Rexroth AB
86/88 Hägglunds DUc Drive unit | Declaration of Incorporation
15 Declaration of Incorporation
Declaration of Incorporation is only available for European version.
Bosch Rexroth AB, Version 06.2020, RE 15326-WA
NOTES
Declaration of Incorporation | Hägglunds DUc Drive unit 87/88
RE 15326-WA, Version 06.2020, Bosch Rexroth AB
Bosch Rexroth AB
SE-895 80 Mellansel
Sweden
Tel. +46 (0) 660 870 00
Fax +46 (0) 660 871 60 [email protected]
Your local contact can be found at: www.boschrexroth.com/hagglundscontacts
We reserve the right to make changes
Printed in Sweden
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