MODEL NO: CAT 231C + CAT 96
PART No: 3110425 & 3110852
OPERATION & MAINTENANCE
INSTRUCTIONS
0104
Fig.1
SPECIFICATIONS
Model:........................................................CAT 231c
Part No:......................................................3110425
Square Drive:.............................................1/2”
Maximum Torque:.....................................240 lbs/ft
Air Inlet Size:..............................................1/4” BSP
Minimum Hose Size:..................................5/16” (8mm) ID
Nominal Air Consumption:...................... 4 CFM
Maximum Air Pressure:............................. 90 PSI (6.2bar)
Weight:......................................................4.0 kg
Bolt Capacity:........................................... 5/16” (16mm)
Socket’s:..9, 10, 11, 13, 14, 17, 19, 22, 24 and 27mm
Vibration Emmisions, Refer to notes on pages 7 and 8
Please note that the details and specifications contained herein are correct at the time of going to print. However CLARKE International reserve the right to change specifications at any time without prior notice. Always consult the machines data plate
Please read these instructions carefully before operating the tool
Thank you for purchasing this CLARKE Air 1/2” Impact Wrench.
Before using the device, please read this manual thoroughly and carefully follow all instructions given. This is for your own safety and that of others around you, and is also to helpyou achieve long and trouble free service from your new tool.
CLARKE GUARANTEE
This CLARKE product is guaranteed against faulty manufacture for a period of 12 months from the date of purchase. Please keep your receipt as proof of purchase.
This guarantee is invalid if the product is found to have been abused or tampered with in any way, or not used for the purpose for which it was intended.
Faulty goods should be returned to their place of purchase, no product can be returned to us without prior permission.
This guarantee does not affect your statutory rights.
PARTS & SERVICE TEL: 020 8988 7400 or e-mail as follows:
ACCESSORIES
A wide range of Airline accessories is available, including Filter/Regulators, Lubricators, High
Pressure Hoses from 5 to 100 Metres, etc. Contact your CLARKE dealer for further information, or CLARKE International Sales Department on 01992 565300
SAFETY PRECAUTIONS AIR SUPPLY
IMPORTANT
Failure to follow these precautions could result in personal injury, and/or damage to property.
❐
When operating this tool, ALWAYS wear: a.
approved impact resistant SAFETY
GOGGLES. (Eye glasses are NOT safety glasses) b.
a DUST MASK c.
EAR DEFENDERS d.
a good pair of INDUSTRIAL GLOVES
❐
ALWAYS disconnect the tool when not in use, and before carrying out any maintenance
❐ ALWAYS keep a safe distance between yourself and other people when using the tool.
❐
ALWAYS maintain the tool with care.Keep
it clean for best and safest performance.
❐
NEVER wear ill fitting clothing, remove watches and rings.
❐
Quick change couplings should not be located at the tool. They add weight and could fail due to vibration.
❐ DO NOT over-reach. Keep your proper footing and balance at all times.
❐ DO NOT force or misuse the tool. It will do a better and safer job at the rate for which it was designed.
❐
DO NOT abuse hoses or connectors.
NEVER carry a tool by the hose, or yank it to disconnect from the air supply. Keep hoses away from heat, oil and sharp edges. Check hoses for leaks or worn condition before use, and ensure that all connections are secure.
❐
DO NOT exceed 90 PSI at the tool.
❐ DO NOT modify the tool in any way.
❐
DO NOT remove any labels. Damaged labels should be replaced.
❐
This tool vibrates with use. Vibration may be harmful to your hands or arms. Stop using the tool if discomfort, a tingling feeling or pain occurs. Seek medical advice before resuming use.
❐ ALWAYS use screens to protect people in the vicinity from flying debris.
❐ NEVER point the tool at anyone.
Tools of this type, operate on a wide range of air pressures. It is recommended that air pressure to this tool does not exceed 90 PSI
(6.1bar), at the tool when running. Higher pressure and unclean air, will shorten the tools’ life because of faster wear, and could be a safety hazard.
Water in the air line will cause damage to the tool, ensure it is properly maintained at all times.
The recommended procedure to connect this tool to an air supply, is shown at fig. 1 on inside front cover.
The air inlet used for connecting air supply, has a standard ¼” BSP thread.
Line pressure, or hose inside diameter, should be increased to compensate for unusually long air hoses (over 10m). Minimum hose diameter should be 6mm (¼") ID., and fittings should have the same inside dimensions.
T
ASSEMBLY
Connect a suitable hose to the Wrench using a ¼” hose adapter,(A whip hose with Quick
Fit coupling is available from your CLARKE dealer). then connect the other end to the airline.
NOTE: ensure the airline is turned off.
Your Wrench is now ready for use.
WARNING
Compressed air can be dangerous. Ensure that you are thoroughly familiar with all precautions relating to the use of compressors and compressed air supply.
IMPORTANT: he use of parts other than CLARKE replacement parts may result in safety hazards, decreased tool performance and may invalidate your warranty.
OPERATING INSTRUCTIONS MAINTENANCE
Daily before use.
Before starting work drain any water from the air tank and blow condensation from the air line. Drain compressor more frequently in hot humid weather.
1. Ensure air is turned OFF, select appropriate impact socket, which must be in good condition, and fits the tool shank and nut closely.
2. Adjust the direction of rotation forward or reverse, this is achieved using the Reverse valve knob situated just above the trigger (throttle Lever).
To adjust direction, push button in or out.
3. Screw the regulator (Item 12) in
(clockwise) to it’s lowest power setting, and apply the wrench to the nut or bolt.
4. Depress trigger and gradually adjust the regulator untill the fastener starts to move in the direction which it was set.The tool is now set to duplicate that tightness.
NOTE:
When critical torque values are not required, turn the nut or bolt one quater to one half a turn untill it fits snugly slightly more if gaskets are used between surfaces.
For additional power on disassembly work turn reulator out to it’s highest setting, (maximum pressure).
1. Drain water from air tank, air line and compressor.
2. Check and clean, if necessary, the air inlet gauze filter .
3. Pour a few drops of CLARKE Air Line
Oil (approx 3cc), into the air inlet. This should be carried out regardless of whether or not an air line lubricator is used.
If an Air line lubricator is NOT used, this procedure should be repeated after every two to three hours of use.
If the wrench is to be stored, or is idle for longer than 24 hours, run a few drops of
Clarke Air Line Oil into the air inlet, and run the tool for 5 seconds in order to lubricate the internal parts.
For lubricating the air motor when in operation, an air line lubricator should be used, with Clarke Air Line Oil, adjusted to 2 drops per minute.
Clarke Air Line Oil is available from your
CLARKE dealer, part no. 3050825.
Be aware that factors other than the tool may effect its operation and efficiency, such as reduced compressor output, excessive drain on the airline, moisture or restrictions in the line, or the use of connectors of improper size or poor condition which will reduce air supply.
IMPORTANT
Where torque settings are critical, the final tightening of nuts or bolts must be by hand, using a calibrated torque wrench.
Grit or gum deposits in the tool may also reduce efficiency. This condition can be corrected by cleaning the air strainer and flushing out the tool with gum solvent oil,or failing this, the tool should be dis-assembled, thoroughly cleaned, dried and re-assembled.
WARNING
NEVER use standard hand sockets, as these could shatter with serious consequences, use only impact sockets, which must be in good conditon.
If the tool runs erratically or becomes inefficient, and the air supply is sound, dismantle the air motor and replace worn or damaged parts, or take the tool to your CLARKE dealer.
PARTS DIAGRAM
PARTS LIST
Index Part
No.
No.
15
16
17
18
19
10
11
12
13
14
20
21
22
23
24
25
26
5
6
7
3
4
8
9
1
2
Description
504W01 Housing
504W02 Valve Bushing
504W03 Reverse Valve
504W04 Trigger
504W05 Pin
504W06 Valve Stem
504W07 Air Inlet
504W08 Ball Set
504W09 Spring
504W10 Steel Ball
504W11 Screen
504W12 Air regulator
504W13 ‘O’ Ring
504W14 Spring
504W15 Oil Seal
504W16 Screw
504W17 Anvil Bushing
504W18 Anvil (1/2”)
504W19 Hammer Cage
504W20 Hammer Pin
504W21 Hammer Dog
504W22 Ddrive Cam
504W13 Pin
504W24 Cylinder
504W25 Rotor
504W26 Rotor Blade
Index Part
Qty No.
No.
1
1
1
1
1
1
1
1
1
1
1
6
1
1
1
1
1
1
1
1
1
1
1
1
1
1
41
42
43
44
45
36
37
38
39
40
31
32
33
34
35
27
28
29
30
Description
Qty
504W27 Front End Plate
CA6001 Ball Bearing
504W29 Rear End Plate
504W30 Pin
504W31 Spring
504W32 Pin
504W33 gasket
504W34 Rear Cover
504W35 Washer
504W36 Screw 4
504W37 Protecting Rubber 1
504W38 Exhaust Deflector 1
504W39 Screw
504W40 Screw
2
1
504W41 Anvil Collar
504W42 ‘O’ Ring
504W43 Rubber
504W44 Screw
504W45 Oil Seal
1
1
1
1
1
1
1
1
1
4
1
1
1
2
HAND-ARM VIBRATION
Employers are advised to refer to the HSE publication “Guide for Employers”.
All hand held power tools vibrate to some extent, and this vibration is transmitted to the operator via the handle, or hand used to steady the tool. Vibration from about 2 to 1500 herz is potentially damaging and is most hazardous in the range from about 5 to 20 herz.
Operators who are regularly exposed to vibration may suffer from Hand Arm Vibration
Syndrome (HAVS), which includes ‘dead hand’, ‘dead finger’, and ‘white finger’. These are painful conditions and are widespread in industries where vibrating tools are used.
The health risk depends upon the vibration level and the length of time of exposure to it……in effect, a daily vibration dose.
Tools are tested using specialised equipment, to approximate the vibration level generated under normal, acceptable operating conditions for the tool in question. For example, a grinder used at 45° on mild steel plate, or a sander on softwood in a horizontal plane etc.
These tests produce a value‘a’, expressed in metres per second per second, which represents the average vibration level of all tests taken, in three axes where necessary, and a second figure ‘K’, which represents the uncertainty factor, i.e. a value in excess of ‘a’, to which the tool could vibrate under normal conditions. These values appear in the specification panel below.
MODEL No:
DESCRIPTION:
CAT231C
1/2” IMPACT WRENCH
Declared vibration emmission value in accordance with EN12096
Measured vibration emmission value a: m/s 2
Uncertainty value - K:
Page Intentionally Left BlanThis Page
This
Intentionally Left Blan
m/s 2
Highest measured reading in a single plane m/s 2
Values determined according to EN28622-1
- 7 -
You will note that a third value is given in the specification - the highest measured reading in a single plane. This is the maximum level of vibration measured during testing in one of the axes, and this should also be taken into account when making a risk assessment.
‘a’ values in excess of 2.5 m/s 2 are considered hazardous when used for prolonged periods. A tool with a vibration value of 2.8 m/s 2 may be used for up to 8 hours
(cumulative) per day, whereas a tool with a value of 11.2 m/s 2 may be used for ½ hour per day only.
The graph below shows the vibration value against the maximum time the respective tool may be used, per day.
The uncertainty factor should also be taken into account when assessing a risk. The two figures ‘a’ and ‘K’may be added together and the resulant value used to assess the risk.
It should be noted that if a tool is used under abnormal, or unusual conditions, then the vibration level could possibly increase significantly. Users must always take this into account and make their own risk assessment, using the graph above as a reference.
Some tools with a high vibration value, such as impact wrenches, are generally used for a few seconds at a time, therefore the cumulative time may only be in the order of a few minutes per day. Nevertheless, the cumulative effect, particularly when added to that of other hand held power tools that may be used, must always be taken into account when the total daily dose rate is determined.
