MP2 TWIGA FLEX SPEC 1.2M Flail Head - Spearhead

MP2 TWIGA FLEX SPEC 1.2M Flail Head - Spearhead
Spearhead MP2 TWIGA FLEX Flail Head
MP2
TWIGA FLEX SPEC
1.2M Flail Head
Edition 1.0 - October 2012
Part No. 8999073
1
Spearhead MP2 TWIGA FLEX Flail Head
CE Declaration of Conformity,
Conforming to EU Machinery Directive
2006/42/EC
We, Spearhead Machinery Ltd, Green View, Salford Priors, Evesham,
Worcestershire, WR11 8SW hereby declare that:
Product ……………………………………………..…………………………
Product Code……………………………………………..…………………………
Serial No……………………………………………..……..………………….
Type……………………………………………..…………………………
Manufactured by: Alamo Manufacturing Services (UK) Limited, Station Road,
Salford Priors, Evesham, Worcestershire, WR11 8SW
Complies with the required provisions of the Machinery Directive 2006/42/EC.
The Machinery Directive is supported by the following harmonized standards:

BS EN ISO 14121-1 (2007) Safety of Machinery – Risk Assessment, Part 1:
Principles Part 2: Practical Guide and Examples of Methods.

BS EN ISO 12100-1 (2010) Safety of Machinery – Part 1: Basic Terminology
and Methodology Part 2: Technical Principles.

BS EN 349 (1993) + A1 (2008) Safety of Machinery – Minimum Distances
to avoid the Entrapment of Human Body Parts.

BS EN 953 (1998) Safety of Machinery – Guards General Requirements
for the Design and Construction of Fixed and Movable Guards.

BS EN 982 (1996) + A1 (2008) Safety Requirements for Fluid Power
Systems and their Components. Hydraulics.
The EC Declaration only applies if the machine stated above is used in accordance
with the operating instructions.
Signed
(On behalf of Spearhead Machinery Ltd)
Status
General Manager
Date
………………………………………………
2
Spearhead MP2 TWIGA FLEX Flail Head
Contents
CE Declaration of conformity
Introduction
Machine Safety Stickers
Safety Recommendation
2
4
5
6
Installing/Removing Machine
Attaching your Head
Running Up your Head
8
10
Set-up
Belt Drive Set-up
Cutting Head Set-up
Hedge Cutting
Grass Cutting
11
12
13
14
Operation
Operation Warnings
Engaging Head Drive
Disengage Head Drive
Tractor Forward Speed
Cutting Sequence
Wire Trap
High Voltage Cables
15
16
16
17
17
18
18
Service & Maintenance
Greasing/Lubrication
Hydraulic Hoses
Routine Checks
Storage
Torque Settings
Regular Service Chart
19
20
21
22
23
23
Diagnostics
Trouble Shooting
Pump & Motor Failure
24
25
Warranty
The Spearhead Warranty
Extended Warranty
26
27
Parts Book
Parts Book Contents
29
3
Spearhead MP2 TWIGA FLEX Flail Head
Introduction
Flail Head range:

MP2 FLAIL HEAD, suitable for contractors requiring high output.
o 1.2m
A range of very robust high capacity flail heads to suit many applications that are
easy to operate and maintain. To ensure trouble-free operation this manual should
be carefully studied.
The term Left and Right hand applies to the machine when coupled to the tractor
and viewed from the rear, this also applies to the tractor.
Important Note
The information contained in this manual is correct at the time of publication.
However, in the course of constant development, changes in specification are
inevitable. Should you find the information given in this book different to the
Machine it relates to please contact the “After Sales Department” for advice.
Please ensure that this manual is handed to the operator before using the
machine for the first time. The operator must fully understand the contents
of this manual before using this machine.
(If the machine is resold the Manual must be given to the new owner.)
4
Spearhead MP2 TWIGA FLEX Flail Head
Stickers
Warning
Avoid fluid escaping
under pressure. Consult
technical manual for
services procedures.
Warning
Danger – flying objects
keep safe distance from
the machine as long as
the engine is running.
Warning
Stay clear of mower flails.
Warning
Shut off engine and remove
key before performing
maintenance or repair work.
Warning
Beware of overhead
electrical power line.
Warning
Carefully read operator’s
manual before handling this
machine. Observe
instructions and safety rules
when operating.
Warning
Check all nuts are
tight every 8
hours.
Warning
Do not remove / open
guard..
5
Spearhead MP2 TWIGA FLEX Flail Head
Safety Recommendations
Beware of the following Potential Dangers associated with the use of
this machine:
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Becoming trapped when hitching or unhitching.
Tractor overbalancing when arm is extended.
Electrocution due to hitting overhead power lines.
Getting caught on rotating power take off (PTO).
Being hit or caught by any moving part, e.g. belts, pulleys, arms, cutting head.
Being hit by flying debris or machine parts due to machine damage.
Machine overbalancing when not in use.
Injection of high pressure oil from damaged couplings or hydraulic hoses.
Accidents due to collision with other machines, or debris left on road.
Always



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Ensure the operator has read this handbook and has been trained to use the
machine.
Ensure all cab safety guards are in place and all tractor windows closed.
Before leaving the tractor cab always ensure that the flail head is firmly on the
ground, no weight is on the machine’s hydraulics and the rotor has stopped spinning.
Check that all guards are properly fitted and there are no damaged or loose parts.
Particular attention should be given to the flails to ensure they are not damaged,
cracked or missing.
Inspect work area for wire, steel posts, large stones and other dangerous materials
and remove before starting work.
Beware of the danger of overhead power cables. The operator must be aware of the
maximum height and reach of the machine when working under power cables. The
minimum legal height for 11,000 and 22,000-volt cables is 5.2 metres from the
ground. When fully extended, the machine may well exceed this height so extreme
caution should be practised. For more information contact the Health and Safety
Executive or your local power company.
Ensure that all warning labels are always visible and that they are not damaged,
defaced or missing..
Lower the head to the ground when parking up.
Fit locking pins to slew and height before transport and before unhitching when
applicable.
Wear ear defenders if operating without a quiet cab or with the cab windows open.
Ensure tractor guards are fitted correctly and are undamaged.
Work at a safe speed, taking into account terrain, passing vehicles and obstacles.
Ensure that the tractor meets the minimum weight recommendations of the machine
manufacturer and that ballast is used if necessary.
Check that machine fittings and couplings are in good condition.
Follow the manufacturer’s instructions for attachment and removal of machine from
the tractor.
6
Spearhead MP2 TWIGA FLEX Flail Head

Use clear warning signs to alert others to the type of machine working in the vicinity.
Signs should be placed at both ends of the work site and should be in accordance
with Department of Transport recommendations.

Ensure flails are of the type recommended by the manufacturer, are securely fitted
and are undamaged.
Ensure hydraulic pipes are correctly routed to avoid damage from chafing,
stretching, pinching or kinking.
Disengage the machine, stop the engine and remove the key before leaving the
tractor cab for any reason.
Clean up any debris left at the work site.
Ensure that when you remove the machine from the tractor it is secured in a safe
position using the stands provided.

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
Never
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
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
Never operate the machine with other people present, as it is possible for debris,
including stones, to be discharged from the front and rear of the flail head.
Never operate the machine until you have read and understood the relevant
Handbook and are familiar with the controls.
Never use a machine that is poorly maintained or has guards that are damaged or
missing.
Never allow an inexperienced person to operate the machine without supervision.
Never use or fit a machine onto a tractor if it doesn’t meet the manufacturer’s
specification.
Never use a machine if the hydraulic system shows signs of damage.
Never attempt to detect a hydraulic leak with your hand, use a piece of card.
Never allow children to play on or around the machine at any time.
Never attempt any maintenance or adjustment without first disengaging the PTO,
lowering the head to the ground, stopping the tractor engine and applying the tractor
parking brake.
Never leave the cab without removing the ignition key.
Never operate the tractor or any controls from any position other than from the
driving seat.
Never stop the engine with the PTO engaged.
Never operate with flails missing.
Never operate PTO above recommended speed, 540 R.P.M.
Never operate with wire around the rotor. Stop immediately.
Never use the head at an angle, which may throw debris towards the cab.
Never attempt to use the machine for any purpose other than that it was designed
for.
Never transport with the PTO engaged.
Never enter the working area of the machine (risk of injury!).
Never transport with the controls live, always turn off electrical isolator switch (red)
and disconnect supply.
7
Spearhead MP2 TWIGA FLEX Flail Head
Attaching your head to the machine
Assuming you have followed the instructions in the operators manual you will have
mounted the machine to the tractor rear linkage, connected the PTO and an
electrical supply, now the machine arms can be operated from the tractor seat.
Warning
Take care when removing/connecting hydraulic fittings
as they may contain high pressure oil !
1. Place the flail head along the tractor nearside wheel in the work position,
about 1 metre away. Use a hydraulic jack and support stands to level the head
if required.
2. Start the tractor and select 540 PTO.
3. Switch on machine electrics via the control panel.
4. Operate the joystick lever and slew switch to place the boom fully forward into
the work position about ½ metre off the ground and 1 metre away from the
tractor wheel. Use the controls move the boom to enable the head to be
attached.
5. Disengage the PTO, switch off the electrics, turn off the tractor and remove
the key before leaving the cab.
6. Attach the flail head to the boom using clamps and bolts supplied, we would
recommend centre mounting at this point.
7. Ensure all connections are clean and free of any contamination before
removing any blanking plugs.
8. Identify the pressure hose on the boom and the pressure port of motor
(nearest anti-cav valve) also the returns hose and returns port. Using the
hoses supplied make the correct connections as identified previously, the
small hose is for the motor case drain this is returned separately to top of
tank.
8
Spearhead MP2 TWIGA FLEX Flail Head
9. Raise boom to lift the flail head clear of the ground before making a test run at
low PTO speed, run for 5 minutes, stop and recheck all connections for oil
leaks.
10. Restart machine, allow oil to warm before running at full speed too ensure
smooth running without any vibration (do not exceed 540 R.P.M.).
Warning
It is most important the operator fully understands the procedure for
attaching/un-attaching the flail head to/from the reach mower. The
following text must be fully understood before attempting to attach the
head. If there is any doubt please contact your supplying dealer or
Spearhead Service Department. Failure to follow the correct procedure
To attach/unattached the head could result in personal injury or machine damage. Any
resulting damage to a machine is not covered by warranty.
Always be sure to select a level firm surface, such as concrete before attaching.
When operating the tractor or machine’s controls do so only when seated in the tractor cab.
Do not allow anyone to stand on or amongst linkage for any reason.
Operate the main arm to bring the frame
horizontal by lowering the head weight to the
ground.
Use only tractors with safety glass. If windows are
not laminated safety glass, polycarbonate glazing
must be fitted between operator and cab meshing.
Shape mesh to cover all windows that the driver will
look through to view flail head in any operating
position. Mesh can be retained by springs and clips
supplied, but it is the operators responsibility to
ensure guarding is firmly in place.
9
Spearhead MP2 TWIGA FLEX Flail Head
Running Up Your Head
1. First ensure the rotor is in the ‘off’ position and PTO drive is disengaged, then start
the tractor.
2. Engage PTO into gear and run machine up to low revs, allowing oil to circulate for
about 15 minutes before operating arms.
3. Re-check oil level, - check for oil leaks. All Spearhead machines have been run-up
and checked thoroughly. However, hose connections can become loose in transit
and these should be checked again before the machine is put to work.
4. Operate the arms through the full amount of travel; check all movements are
functioning correctly.
5. Place flail head near ground in a safe position and with tractor engine revs low,
select ‘start’ position for the flail motor.
6. Once the rotor is settled, slowly increase speed of PTO to 540 R.P.M. and run for a
further 5 minutes. Slowly reduce speed and then disengage PTO.
7. Check all hoses for kinks, pinching, chafing and leaks.
8. Re-check oil level.
Warning
The rotor will take a long time to stop. Never leave the cab until PTO
is disengaged, engine stopped and rotor has stopped spinning.
10
Spearhead MP2 TWIGA FLEX Flail Head
Belt Drive Setup
Belt Drive optimises cutting performance with a choice of rotor speeds.

Standard 2350 rpm to provide extra torque with more power for grass mowing and
overgrown hedges (rotor pulley 160 Ø. Motor pulley 140 Ø).

Faster 3080 rpm to provide extra cutting tip speed for fine finish on annual hedge
trimming (rotor pulley Ø140 - motor pulley Ø160).
11
Spearhead MP2 TWIGA FLEX Flail Head
Cutting Head Set-Up
Cutting Width
Standard 1.2m is suitable for both grass and hedges, and optimises power to weight ratio.
Optional 1.6m is best used for hedge trimming to reduce the number of passes. However,
there is less power per flail, and an increased weight penalty, which is not recommended on
long reach machines and especially not for grass cutting.
Warning
Never attempt to operate the machine without the rear roller correctly
fitted. The roller performs a key safety function should the rotor shaft
pick up wire. It is essential for operator safety that it remains in place.
It is also an essential structural part of the cutting head. Removing it
will cause premature wear on rotor bearings and will lead to
fatigue on the fabrications.
12
Spearhead MP2 TWIGA FLEX Flail Head
Hedge Cutting
Recommended for hedge cutting
-
1.2m or 1.6m rotor
T” flails or “Boot” flails
Rear flap
Front flap
Roller Set-Up
The roller should be raised so that it is clear of the
top of the hedge. The adjustable front guard should
be set as low as possible without restricting the
ability of the hedge to enter the cutting head.
Normal Hedge Cutting
Flail is cutting upwards-reducing flying debris to
minimum and leaving a tidy finish. Open adjustable
front hood as required.
Rough Cutting
Reverse rotation if necessary. Down cut is not good
for the hedge and leaves an untidy finish. Only use
this position when rough cutting in heavy growth.
13
Spearhead MP2 TWIGA FLEX Flail Head
Grass Cutting
Recommended for grass cutting
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
1.2 rotor
Cowl wear plate
“C” flails or “Back to Back” flails
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Optional - “Boot” flails
Front and rear flap
Head float and Angle Float
Auto-pilot
Note: The 1.5m head is not recommended for grass cutting.
Cutting Height Adjustment
Grass Cutting
Set rear roller down to control cutting height.
Have rubber flap fitted to the front and rear
of head and close down the adjustable front
hood to reduce flying debris to a minimum.
Warning
Do not operate without front and rear flap.
Do not verge mow without a rear roller.
Do not verge mow with rear roller set too
high; remember the rear roller is used to
control the cutting height.
14
Spearhead MP2 TWIGA FLEX Flail Head
Operation Warnings
Warning
Please read all the following operation warnings carefully

Never drive the tractor with arm out-stretched (except when cutting). When moving
from work always first retract arms. Transport with care, metal fatigue is always
caused by careless transportation and misuse. If the ground is uneven or bumpy,
slow down.

Read this manual and be fully familiar with all operational maintenance and safety
procedures.

Practice in open space without rotor running until familiar with controls. Take care
working the head close to the tractor as it may be possible to strike the tractor

Remember one of the clever features of the Twiga range is its ability to operate
within a very narrow space, often within the tractor’s width. This will mean it is quite
possible for the flail head to foul the tractor. When in confined space the main arm
will need to be slightly slewed backwards from normal working position. Practice all
these positions and be very familiar with your machine before ever attempting work.

Never operate above the recommended PTO speed of 540 R.P.M. Failure to heed
this warning will result in severe damage i.e. reduced belt and pulley life (when
fitted); greatly increased oil temperature; risk of rotor going out of balance, as well
as reduced machine life, and may cause expensive repairs.

Failure to start and stop the rotor at a low PTO speed or to operate at the correct
speed will result very quickly in severe motor and/or pump damage.

Never attempt to slew arms when fully out stretched - always retract before
operating the slew. Be very careful when operating on sloping ground.

Never attempt to slew arms with the head on the ground, always raise the head
before slewing.

Never attempt to operate the machine while going backwards. It will immediately
damage the arms and possibly the flail head. Remember, before selecting reverse
gear always lift the flail head out of work and retract the arms towards the tractor.

Never change/reverse the rotor rotation until it has come to a standstill, serious
damage will occur leading to premature pump and/or motor failure.
15
Spearhead MP2 TWIGA FLEX Flail Head
Transport to work position

Remove locking pin from slew post.

Ensure rotor/motor switch is off.

Engage PTO low revolutions.

Lower main lift ram only, until main arm is vertical.

Extend dipper arm outward.

Slew arm forward through 90°.

Position head till horizontal, just above ground.
Warning
Ensure slew locking pin is removed, or machine
damage will occur.
Engaging Head Drive

Select 540 rpm PTO and run with low engine revs.

With flail head in safe position move rotor control lever (5) to ‘ON’.

Cold start - it is important not to run at full speed with cold oil. Run at low speed for
at least 15 minutes to allow oil to warm up.

Afterwards slowly increase engine revs to obtain correct PTO speed, 540rpm.

Never attempt to start rotor while under load.
Disengage Head Drive

Slowly decrease engine revolutions to a fast idle.

Move rotor control lever (5) to ‘OFF’.

Never increase or decrease PTO speed rapidly, this could seriously damage pumps
and motor.
16
Spearhead MP2 TWIGA FLEX Flail Head
Tractor Forward Speed
Too high a forward speed will impair the finish,
leaving it looking ragged, and cause over frequent
use of the break back, which will overheat the oil.
A slower forward speed improves the standard of
the finish.
Cutting Sequence
Cut field side and bottom of hedge first.
Cutting hedge from roadside
Warning
Never operate with flail rotor facing
towards the tractor. This is potentially
dangerous with debris being thrown
towards the tractor, and unseen
hazards may cause damage as the break-back cannot
function.
17
Spearhead MP2 TWIGA FLEX Flail Head
Wire Trap
This is located under the front hood. It must not be interfered with in any way
Any wire must be removed immediately.
Lower rotor to ground, select rotor control lever to ‘off’ and wait until rotor stops spinning.
Disengage P.T.O. and stop engine before leaving cab.
Warning
Wire is extremely dangerous and must be
avoided at all times. Inspect work area before
commencing, removing all loose wire and clearly
marking fixed wire
High Voltage Cables
Always be very aware of overhead cables. Between poles wires can be
well within reach of the machine. If in any doubt of the danger, consult
your local electricity company regarding a safe procedure for work.
18
Spearhead MP2 TWIGA FLEX Flail Head
Service & Maintenance
Greasing/Lubrication Points
All the following grease points need to be greased daily
Head Rotor & Roller
Grease every 8 hours (5-10 pumps)
Greasing/Lubrication
Washing your machine
Grease all your machine and optional parts after each time you wash your machine.
Motor Drive - Belt Drive
Motor drive splines are lubricated via the pulley shaft and should be greased every 40 hours
with 5 pumps of grease.
19
Spearhead MP2 TWIGA FLEX Flail Head
Service & Maintenance
Hydraulic Hoses
Carefully check condition of all hoses during routine service, paying particular attention to chafed
outer casing. Securely wrap with waterproof adhesive tape to stop the metal braid from rusting.
Daily inspect all hydraulic hoses and fittings to be in good order. Any damages or leaks must be
rectified immediately, this is part of the daily maintenance and it is your responsibility to help ensure a
long reliable working life. Spearhead provide a tool kit to enable hoses to be tightened as part of
routine maintenance.
Hoses with damaged metal braid should be replaced.
When replacing hoses, quote number stamped on fitting at one end. The Spearhead hydraulic
system works at very high pressure. Use only genuine hoses, a burst hose could be very dangerous.
Always replace hoses in exactly the same way they were removed, and to avoid
twisting during fitting use two spanners to slacken and tighten.
Warning
Hose is weakened when installed in twisted position. Also, pressure pulses in twisted hose tend to fatigue
wire and loosen fitting connections. Design so that machine motion produces bending rather than torsion.
Always check the yellow protective sleeving is in good order, replacing sleeving is far cheaper than
replacing expensive hoses.
Hose warranty is limited to replacement of hoses due to faulty materials or manufacture. Warranty
will not be considered on hoses damaged by chaffing, abrasion, cuts or pinching while in work, or to
damaged threads due to over tightening.
Recommended torque settings for nut
security
Recommended torque settings for hose unions
in conjunction with bonded seals
BSP
(size)
1/4 “
3/8”
1/2”
Tightening
(Nm)
24
33
44
Torque
(lbs/ft)
18
24
35
BSP
(size)
1/4”
3/8”
1/2”
Tightening
(Nm)
34
75
102
Torque
(lbs/ft)
25
55
75
3/4”
1”
84
115
62
85
3/4”
1”
183
203
135
150
All hose connections are of a “Parker” soft seal type and only need 1/2 a turn more than finger tight to
become leak proof. When dismantling, the hose should be manually flexed to relieve any pressure,
and the retaining nut slackened before complete disassembly.
20
Spearhead MP2 TWIGA FLEX Flail Head
Service & Maintenance
Routine Checks

Grease all bearings daily.

Check there is no wrapping of string, plastic, grass or other debris on rotor shaft and
rear roller bearings.

Check the condition of flails and ensure all retaining bolts are tight. When flails are
replaced care must be taken to maintain balance of rotor shaft, do not change to a
different type.

Flail retaining bolt and nut torque setting is 365Nm.

Flail head is supplied centre mounted to get best travel on crowd ram.

Never operate with any flails missing. This will cause severe vibration and lead to
rapid bearing wear and quickly cause the head to crack.

Blunt flails leave an untidy finish and absorb excessive power, when re-sharpening
always wear protective clothing and goggles.

When flails are showing severe wear, damage or cracking, they must be replaced
immediately. Never attempt to weld the flails, as this will make them very brittle and
extremely dangerous. Do not take risks with the cutting flails, if in doubt replace.

When replacing flails always replace bolts, nuts and bushes with new.

Regularly check that all rotor bearing bolts and hydraulic motor retaining bolts are
tight.

With a new machine or if new bolts have been fitted, particular attention needs to be
applied to regular tightening of the new bolts. (1hr - 4hrs then daily).

Check the condition of drive belt, ensuring they
are aligned and properly tensioned to avoid any
unnecessary belt wear. Remove guard for access
to adjuster when tensioning the belt, and ensure it
is running in line after adjustment.
Warning
When end mounted, head may foul on machine.
Do not slide head mounting bracket past centre stops to extreme
end on 1.6 metre head.
21
Spearhead MP2 TWIGA FLEX Flail Head
Service & Maintenance
Warning
Before you attempt to do any repair, service, maintenance or
adjustment on your machine, ensure the engine has stopped and t
he key is removed. PTO is disengaged, handbrake secure, and t
he head is firmly on the ground.
Storage
Before storing away, thoroughly wash the machine, removing all traces of grass and dirt.
Great care must be taken when washing with high-pressure hoses, do not hold the water jet
close to the paintwork. Use steam cleaners with caution, be sure to remove all detergents to
avoid any discolouring or damage to paint. Grease all grease points until fresh grease
shows. Slacken rotor drive belts (where fitted).
It is important where possible to store undercover to protect against rain and sunlight.
Always ensure a firm level surface.
Remember: regular maintenance will greatly increase the life of the machine.
22
Spearhead MP2 TWIGA FLEX Flail Head
Service & Maintenance
Torque Settings
The Torque figures given below are recommended maximum settings only.
Size:
Tensile strength:
Description:
M8
M10
M12
M14
M16
M16
12.9
8.8
8.8
10.9
Pulley clamps
General fasteners
General fasteners
Flail bolts
Flail bolts
Head bracket bolts
8.8
Torque setting:
Nm:
45
65
114
200
280
Service points
Check
Service
Hours
Grease
Regular Service Chart
8 hrs
8 hrs
Bolts are fully tightened
Condition of flails
X
X
8 hrs
8 hrs
Condition of hoses especially for chafing
Flail bolts are fully tightened
X
X
8 hrs
Flail head retaining bolts are fully tightened
X
8 hrs
Inspect leaks from fittings and pipes
X
8 hrs
8 hrs
Rotor bearing bolts are fully tightened
Rotor Bearings
X
8 hrs
8 hrs
8 hrs
50 hrs
Motor bolts are fully tightened
Rear roller
Maintain correct belt tension on head (only with belt drive heads)
Motor spline Drive
23
X
X
X
X
X
Spearhead MP2 TWIGA FLEX Flail Head
Trouble Shooting
Problem
Cause
Solution
Excessive belt wear
Belt and pulley condition
Pulley alignment
Incorrect belt tension
Overloading of implement
Flails worn
Rotor speed/direction
Crop condition
Rotor out of balance
Wire/string in bearing
Lack of maintenance
Water in bearing
Flails broken or missing
Bearings worn or damaged
Rotor shaft bent
Build up of debris
Incorrect speed
Oil level incorrect
Oil grade incorrect
PTO speed too fast
Ambient temperature too high
Machine overloaded
Oil level low
Replace if necessary
Check alignment
Tension belts to spec
Reduce forward speed or increase height of cut
Replace worn flails
Check tractor PTO speed
Look for suitable conditions
See rotor vibration
Remove wire/string
Grease bearings to schedule
Expel water with grease
Replace flails
Replace bearings
Re-balance/replace rotor
Remove debris
Check rotor R.P.M.
Fill tank to correct level
Drain and refill tank with correct grade oil
Ensure the tractor's PTO speed matches
implement
Reduce work rate / install oil cooler
Reduce forward speed or increase height of cut
Fill oil to correct level
Oil pump suction filter blocked
Oil leak in pressure line
Drive line broken
Replace filter element
Check machine of leaks
Check pump is rotating
Cut Quality
Rotor bearing failure
Rotor vibration
Oil overheating
Hydraulics not
responding
24
Spearhead MP2 TWIGA FLEX Flail Head
Pump & Motor Failure
There are many reasons for pump and motor failure, cavitations (suction of air), peak pressure,
contamination. These can be avoided by the following:

Never run out of oil

Never run a cold machine straight up to speed, ensure the engine idle speed before
engage/disengage the head motor.

Never increase or decrease engine speed quickly

Regularly check that suction hose and pump fittings are tight.

Never stop or start the rotor at 540 R.P.M.

Never cause sudden movements to the arms via your controls or bumps in the ground as
pressure spikes will be transmitted back to the pump, resulting in failure.

Avoid striking the rotor on obstacles i.e., road gullies as this causes pressure spikes.

Never transport the machine with the PTO in gear.

Never select 1000 speed gear for economy start up, speed is too high.

Never operate above recommended PTO speed 540r.p.m. and risk overheating.
Remember: pump and motor warranty is limited to replacement due to faulty materials or
manufacture. Cavitations, contamination and peak pressures are easily detected on inspection,
warranty will not be considered if failure is due to misuse.
25
Spearhead MP2 TWIGA FLEX Flail Head
The Spearhead Warranty
Spearhead warrants that the Spearhead machine referred to in the Warranty Registration Form will
be free from defects in materials and workmanship for a period of 12 months from the date of sale.
This warranty does not affect your statutory rights, but merely adds to them. Should you have a
problem within 12 months from the date of sale please contact your original Spearhead dealer, or
Spearhead’s Service Department. Any part found to be defective during this period will be replaced
or repaired, at Spearhead’s discretion, by the dealer or a Spearhead Service Engineer.
Spearhead Warranty Conditions
1. The Warranty Registration Form must be completed and returned to Spearhead within 30
days of the date of sale.
2. This warranty does not cover defects arising from fair wear and tear, wilful damage,
negligence, misuse, abnormal working conditions, use in competition, failure to follow
Spearhead’s instructions (oral or written, including all instructions an recommendation made
in the Operator’s Manual) or alteration or repair of the machinery without Spearhead’s
approval.
3. The machinery must have been serviced in accordance with the Operator’s Manual and the
Service Log must have been kept up to date and made available to the dealer should
service, repair or warranty work be undertaken
4. This warranty does not cover claims in respect of wearing parts such as blades, flails,
paintwork, tyres, belts, hydraulic hoses, bearings, bushes, linkage pins, top links, ball ends
unless there is a manufacturing or material defect or the cost of normal servicing items such
as oils and lubricants.
5. This warranty does not cover any expenses or losses incurred whilst the machinery is out of
use for warranty repairs or parts replacement.
6. This warranty does not extend to parts, materials or equipment not manufactured by
Spearhead, for which the Buyer shall only be entitled to the benefit of any such warranty or
guarantee given by the manufacturer to Spearhead. Only genuine Spearhead replacement
parts will be allowable for warranty claims.
7. All parts replaced by Spearhead under warranty become the property of Spearhead and
must be returned to Spearhead if Spearhead so request. Such parts may only be disposed
of after a warranty claim has been accepted and processed by Spearhead.
8. Spearhead is not liable under this warranty for any repairs carried out without Spearhead’s
written consent or without Spearhead being afforded a reasonable opportunity to inspect the
machinery the subject of the warranty claim. Spearhead’s written consent must, therefore,
be obtained before any repairs are carried out or parts replaced. Use of non-Spearhead
parts automatically invalidates the.
Spearhead Warranty. Failed components must not be dismantled except as specifically
authorised by Spearhead and dismantling of any components without authorisation from
Spearhead will invalidate this warranty.
9. All warranty claims must be submitted to Spearhead on Spearhead Warranty Claim Forms
within 30 days of completion of warranty work.
Using the machine implies the knowledge and acceptance of these instructions and the
limitations contained in this Manual.
26
Spearhead MP2 TWIGA FLEX Flail Head
Extended Warranty - UK Only
As an extension to the 12-month warranty set out above, Spearhead will provide an additional 12month warranty cover subject to the Spearhead Warranty Conditions above and the Extended
Warranty Conditions below.
Extended Warranty Conditions
1. The extended warranty applies to hydraulic pumps, motors, valves and gearboxes only. It
does not apply to other parts, to consumables such as lubricants, seals or filters or to labour
charges.
2. The machinery must have had an annual service carried out by an Authorised Spearhead
Dealer or a Spearhead Service Engineer within 1 month of the first anniversary of the date of
sale and the Service Report form must have been completed and stamped by the servicing
dealer or Spearhead Service Engineer and sent to Spearhead within 14 days after the first
annual service.
3. The extended warranty does not cover costs of transportation of the machinery to or from the
dealer or Spearhead or the call out costs or travelling expenses of on-site visits.
Transfer of Warranty
The Spearhead warranty may be transferred to a subsequent owner of the machinery (for use within
the UK) for the balance of the warranty period, subject to all of the warranty conditions and provided
that the Change of Owner form is completed and sent to Spearhead within 14 days of change of
ownership.
Spearhead reserves the right to make alterations and improvements to any machinery without
notification and without obligation to do so.
27
Spearhead MP2 TWIGA FLEX Flail Head
MP2 Flail Head
TWIGA FLEX SPEC
1.2M
Parts Book
Edition 1.0 – October 2012
28
Spearhead MP2 TWIGA FLEX Flail Head
Contents
Ordering your parts
30
Front Hood Assembly
31
Cowl Assembly - Belt Drive
32
Belt Guard Assembly
33
Piston Motor
34
Bearing Housing - Belt Drive
35
Pulley Support
37
Roller
38
Comp Flail Rotor Assembly
39
1.2M Rear Flap Kit
39
Hose Kit - Belt Drive
40
1.2M Head Jack Kit
41
Head Quick Release Coupling Kit
42
Safety Decals
43
29
Spearhead MP2 TWIGA FLEX Flail Head
Ordering Your Part’s
When ordering parts please refer to your parts list to help your dealer with your order.
Part number and quantity
Description
Machine model number
Serial number of the machine
Delivery instructions (e.g. next day).
Delivery is normally via carrier direct to your dealer. Please check with your dealer for stock
availability and arrangement of dispatch. Ensure you or your dealer has sufficient cover for parts
required outside factory hours.
When ordering your seal kits please quote both codes stamped on the base of the cylinder.
Important Note
The information contained in this manual is correct at the time of publication. However, in the
course of constant development, changes in specification are inevitable. Should you find the
information given in this book different to the machine it relates to, please contact the “After
Sales Department” for advice.
Key:
(LH)
(RH)
=
=
Left hand
Right hand
30
Spearhead MP2 TWIGA FLEX Flail Head
FRONT HOOD ASSEMBLY – S180016.87
REF.
1
2
3
4
5
6
7
8
9
PART NO.
1778064
1777398
8400204
2770258
2770436
2770417
2770396
2770434
2770412
31
DESCRIPTION.
FRONT HOOD
RETAINING STRIP
RUBBER FLAP
BOLT
WASHER
NUT
BOLT
WASHER
NUT
QTY.
1
1
1
2
2
2
5
5
5
Spearhead MP2 TWIGA FLEX Flail Head
COWL ASSEMBLY - BELT DRIVE – S180016.103
REF.
1
2
3
3
4
5
6
7
8
9
10
11
12
PART NO.
181086
1800194
2770389
2770394
180128
180129
040000D
2770425
2770454
2770447
2770347
2770417
2770467
32
DESCRIPTION.
COWL
HINGE BAR
BOLT
NUT
LH ROLLER PLATE
RH ROLLER PLATE
ROLLER CLAMP
BOLT
WASHER
NUT
BOLT
NUT
GREASE NIPPLE
QTY.
1
1
1
1
1
1
2
4
4
4
4
4
2
Spearhead MP2 TWIGA FLEX Flail Head
BELT GUARD ASSEMBLY - S180016.104
REF.
1
2
3
4
5
6
PART NO.
181087
180999
2770440
2770442
2770436
05.625.10
33
DESCRIPTION.
LH GUARD
GUARD PIN
CUP SQUARE BOLT
WASHER
SPRING WASHER
BOLT
QTY.
1
1
1
4
1
1
Spearhead MP2 TWIGA FLEX Flail Head
PISTON MOTOR – S180012.71
REF.
1
2
3
4
5
6
7
8
9
10
11
12
13
PART NO.
3151082
3151032G
3610039
181096
2770546
2770455
30.077.57
3260072
3460301
3700193
3260073
3360090
3360091
QTY.
1
1
1
1
2
4
2
3
2
1
2
1
1
DESCRIPTION.
PISTON MOTOR
GASKET
CHECK VALVE
SPIGGOT WASHER
M14 X 60 BOLT
M14 FLAT WASHER
M14 NYLOCK NUT
BONDED SEAL
ADAPTOR
ELBOW ADAPTOR
BONDED SEAL
ADAPTOR
ADAPTOR
34
Spearhead MP2 TWIGA FLEX Flail Head
BEARING HOUSING ASSEMBLY - BELT DRIVE – S180016.81
35
Spearhead MP2 TWIGA FLEX Flail Head
BEARING HOUSING ASSEMBLY - BELT DRIVE – S180016.81
REF.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
22
23
24
25
26
PART NO.
180468
180188
180472
180155
0600018
7190022
2770461
2770454
2770447
2770467
2772293
2770469
1777208
2770398
2770556
4771511
4770948
4770946
4770971
4770922
9293085
180795
2770536
2770382
2770412
DESCRIPTION.
BEARING HOUSING
STUB SHAFT
COVER PLATE
SEAL MOUNT PLATE
BEARING
CIRCLIP
M16 X 45 SKT BOLT
M16 FLAT WASHER
M16 NYLOC
M6 GREASE NIPPLE
M10 X 50 SKT BOLT
M10 SPRING WASHER
RETAINING WASHER
M12 X 40 CSK SKT BOLT
M10 X 25 SKT BOLT
SEAL
160 V PULLEY
140 V PULLEY
MULTI BELT
PULLEY CLAMP
M10 X 40 COACH BOLT
PULLY SUPPORT CLAMP
M12 NUT
M12 X 70 BOLT (10.9)
M10 NYLOC
36
QTY.
2
1
1
1
2
2
6
6
6
2
6
14
1
1
8
1
1
1
1
2
4
1
1
1
4
Spearhead MP2 TWIGA FLEX Flail Head
PULLEY SUPPORT - S180018.53
REF.
1
2
3
4
5
6
PART NO.
180809
180817
2770468
2771129
4771506
4771620
37
DESCRIPTION.
PULLEY SUPPORT
STUB SHAFT
M8 ST GREASE NIPPLE
CIRCLIP
OIL SEAL
BEARING
QTY.
1
1
2
1
1
2
Spearhead MP2 TWIGA FLEX Flail Head
ROLLER – S180012.64
REF.
1
2
3
4
5
6
7
8
9
PART NO.
180735
180902
180785
4771608
2770467
2770469
2770482
2777519
2771108
DESCRIPTION.
6" ROLLER END CAP
ROLLER W/ASSY - 1.2M
ROLLER STUB SHAFT
BEARING - ROLLER SHAFT
M6 GREASE NIPPLE
M10 SPRING WASHER
M10 X 90 SKT CAPSCREW
CIRCLIP - CONSIGNMENT
CIRCLIP - CONSIGNMENT
38
QTY.
2
1
2
2
2
10
10
2
2
Spearhead MP2 TWIGA FLEX Flail Head
COMP FLAIL ROTOR ASSEMBLY – S180016.105
REF.
1
2
3
4
5
PART NO.
181171
180231-WA
T7943
05.968.04
180808
7198390
DESCRIPTION.
ROTOR AND COMP FLAIL ASSY
MP2 ROTOR WELDED ASSY
FLAIL BOLT
S.LOCKING NUT
SPACER
COMP FLAIL
QTY.
1
24
24
24
24
1.2M REAR FLAP KIT – S180012.06
REF.
1
2
3
4
5
PART NO.
8400207B
1777398
2770615
2770434
2770412
DESCRIPTION.
1.2M REAR FLAP
1.2M RETAINING BAR
M10 X 35 CUP SQ BOLT
M10 FLAT WASHER
M10 NYLOCK NUT
39
QTY.
1
1
5
5
5
Spearhead MP2 TWIGA FLEX Flail Head
HOSE KIT - BELT DRIVE – S180012.69
REF.
1.1
1.2
1.3
2
3
PART NO.
3750724.02
3750724.03
3750724.01
43542.10
30.058.66
DESCRIPTION.
1" HOSE
3/4" HOSE
1/2" HOSE
HOSE SLEEVE
CABLE TIE
40
QTY.
1
1
1
1
5
Spearhead MP2 TWIGA FLEX Flail Head
1.2M HEAD JACK KIT – S180012.67
REF.
1
2
3
4
5
PART NO.
181048
1048060
2770396
2770412
2770434
DESCRIPTION.
1.2M HEAD JACK MOUNT
JACK ASSEMBLY
M10 X 35 BOLT
M10 NYLOCK NUT
M10 FLAT WASHER
41
QTY.
1
1
1
1
2
Spearhead MP2 TWIGA FLEX Flail Head
HEAD QUICK RELEASE COUPLING KIT – S180012.68
REF.
1
2
3
4
5
6
7
8
PART NO.
3151105
3151106
3151109
3260072
3260074
3360091
3360092
3460301
DESCRIPTION.
1" MALE COUPLING
1" FEMALE COUPLING
1/2" MALE COUPLING
BONDED SEAL
BONDED SEAL
ADAPTOR
ADAPTOR
ADAPTOR
42
QTY.
1
1
1
1
2
1
1
1
Spearhead MP2 TWIGA FLEX Flail Head
SAFETY DECALS – S180016.86
3
2
6
7
4
5
8
9
10
REF.
1
2
3
4
5
6
7
8
9
10
PART NO.
7103230
8770306
8770307
8770322
8770330
8770357
8770359
8770360
8770373
8999019
DESCRIPTION.
POP RIVET
BOLT TIGHT STICKER
MANUFACTURED IN GB
GREASE POINT LABEL
SERIAL NUMBER PLATE
KEEP A SAFE DISTANCE
ELECTRICAL POWER LINES
STAY CLEAR OF MOWER BLADES
SPEARHEAD - 615MM
MP2 MK2 PARTS BOOK
43
QTY.
4
1
2
4
1
2
1
2
1
1
Spearhead MP2 TWIGA FLEX Flail Head
44
Spearhead MP2 TWIGA FLEX Flail Head
Spearhead Machinery Ltd
Green View
Salford Priors
Evesham
Worcestershire
WR11 8SW
Tel: 01789 491860
Fax: 01789 778683
www.spearheadmachinery.com
[email protected]
45
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