Twose Series
MAXICUT
Rotary Flex Wing Mowers
Models: M460-3 & M600-3
Operator Manual
Publication 5299 June 2016
IMPORTANT
VERIFICATION OF WARRANTY REGISTRATION
DEALER WARRANTY INFORMATION & REGISTRATION VERIFICATION
It is imperative that the selling dealer registers this machine with McConnel Limited before
delivery to the end user – failure to do so may affect the validity of the machine warranty.
To register machines go to the McConnel Limited web site at www.mcconnel.com, log
onto ‘Dealer Inside’ and select the ‘Machine Registration button’ which can be found in
the Service Section of the site. Confirm to the customer that the machine has been
registered in the section below.
Should you experience any problems registering a machine in this manner please contact
the McConnel Service Department on 01584 875848.
Registration Verification
Dealer Name:
……………………..…………………………………………………………….
Dealer Address:
…….………………………………………………………………………….
Customer Name:
……………………..…………………………………………………………
Date of Warranty Registration:
……/……/...…… Dealer Signature: ………………..……
NOTE TO CUSTOMER / OWNER
Please ensure that the above section above has been completed and signed by the selling
dealer to verify that your machine has been registered with McConnel Limited.
IMPORTANT: During the initial ‘bedding in’ period of a new machine it is the customer’s responsibility
to regularly inspect all nuts, bolts and hose connections for tightness and re-tighten if required. New
hydraulic connections occasionally weep small amounts of oil as the seals and joints settle in – where
this occurs it can be cured by re-tightening the connection – refer to torque settings chart below. The
tasks stated above should be performed on an hourly basis during the first day of work and at least
daily thereafter as part of the machines general maintenance procedure.
CAUTION: DO NOT OVER TORQUE HYDRAULIC FITTING S AND HOSES
TORQUE SETTINGS FOR HYDRAULIC FITTINGS
HYDRAULIC HOSE ENDS PORT ADAPTORS WITH BONDED SEALS
BSP
Setting
Metric
BSP
Setting
Metric
1/4” 18 Nm 19 mm 1/4” 34 Nm
19 mm
3/8” 31 Nm 22 mm 3/8” 47 Nm
22 mm
1/2” 49 Nm 27 mm 1/2” 102 Nm
27 mm
5/8” 60 Nm 30 mm 5/8” 122 Nm
30 mm
3/4” 80 Nm 32 mm 3/4” 149 Nm
32 mm
1” 125 Nm 41 mm 1” 203 Nm
41 mm
1.1/4”
190 Nm
50 mm
1.1/4”
305 Nm
50 mm
1.1/2” 250 Nm 55 mm 1.1/2” 305 Nm
55 mm
2” 420 Nm 70 mm 2” 400 Nm
70 mm
WARRANTY POLICY
WARRANTY REGISTRATION
All machines must be registered, by the selling dealer with McConnel Ltd, before delivery to the
end user. On receipt of the goods it is the buyer’s responsibility to check that the Verification of
Warranty Registration in the Operator’s Manual has been completed by the selling dealer.
1. LIMITED WARRANTIES
1.01. All machines supplied by McConnel Ltd are warranted to be free from defects in material and
workmanship from the date of sale to the original purchaser for a period of 12 months, unless
a different period is specified.
1.02. All spare parts supplied by McConnel Ltd and purchased by the end user are warranted to be
free from defects in material and workmanship from the date of sale to the original purchaser
for a period of 6 months. All parts warranty claims must be supported by a copy of the failed
part invoice to the end user. We cannot consider claims for which sales invoices are not
available.
1.03. The warranty offered by McConnel Ltd is limited to the making good by repair or replacement
for the purchaser any part or parts found, upon examination at its factory, to be defective
under normal use and service due to defects in material or workmanship. Returned parts
must be complete and unexamined. Pack the component(s) carefully so that any transit
damage is avoided. All ports on hydraulic items should be drained of oil and securely plugged
to prevent seepage and foreign body ingress. Certain other components, electrical items for
example, may require particular care when packing to avoid damage in transit.
1.04. This warranty does not extend to any product from which McConnel Ltd’s serial number plate
has been removed or altered.
1.05. This warranty does not apply to any part of the goods, which has been subjected to improper
or abnormal use, negligence, alteration, modification, fitment of non-genuine parts, accident
damage, or damage resulting from contact with overhead power lines, damage caused by
foreign objects (e.g. stones, iron, material other than vegetation), failure due to lack of
maintenance, use of incorrect oil or lubricants, contamination of the oil, or which has served
its normal life. This warranty does not apply to any expendable items such as blades, belts,
clutch linings, filter elements, flails, flap kits, skids, soil engaging parts, shields, guards, wear
pads, pneumatic tyres or tracks.
1.06. Temporary repairs and consequential loss - i.e. oil, downtime and associated parts are
specifically excluded from the warranty.
1.07. Warranty on hoses is limited to 12 months and does not include hoses which have suffered
external damage. Only complete hoses may be returned under warranty, any which have
been cut or repaired will be rejected.
1.08. Machines must be repaired immediately a problem arises. Continued use of the machine
after a problem has occurred can result in further component failures, for which McConnel Ltd
cannot be held liable, and may have safety implications.
1.09. If in exceptional circumstances a non McConnel Ltd part is used to effect a repair, warranty
reimbursement will be at no more than McConnel Ltd’s standard dealer cost for the genuine
part.
1.10. Except as provided herein, no employee, agent, dealer or other person is authorised to give
any warranties of any nature on behalf of McConnel Ltd.
1.11. For machine warranty periods in excess of 12 months the following additional exclusions
shall apply:
1.11.1. Hoses, exposed pipes and hydraulic tank breathers.
1.11.2. Filters.
1.11.3. Rubber mountings.
1.11.4. External electric wiring.
1.11.5. Bearings and seals.
1.12. All service work, particularly filter changes, must be carried out in accordance with the
manufacturer’s service schedule. Failure to comply will invalidate the warranty. In the event of
a claim, proof of the service work being carried out may be required.
1.13. Repeat or additional repairs resulting from incorrect diagnosis or poor quality previous repair
work are excluded from warranty.
NB Warranty cover will be invalid if any non-genuine parts have been fitted or used. Use of non-
genuine parts may seriously affect the machine’s performance and safety. McConnel Ltd cannot be
held responsible for any failures or safety implications that arise due to the use of non-genuine parts.
2. REMEDIES AND PROCEDURES
2.01. The warranty is not effective unless the Selling Dealer registers the machine, via the
McConnel Ltd web site and confirms the registration to the purchaser by completing the
confirmation form in the operator’s manual.
2.02. Any fault must be reported to an authorised McConnel Ltd dealer as soon as it occurs.
Continued use of a machine, after a fault has occurred, can result in further component
failure for which McConnel Ltd cannot be held liable.
2.03. Repairs should be undertaken within two days of the failure. Claims submitted for repairs
undertaken more than 2 weeks after a failure has occurred, or 2 days after the parts were
supplied will be rejected, unless the delay has been authorised by McConnel Ltd. Please
note that failure by the customer to release the machine for repair will not be accepted as a
reason for delay in repair or submitting warranty claims.
2.04. All claims must be submitted, by an authorised McConnel Ltd Service Dealer, within 30 days
of the date of repair.
2.05. Following examination of the claim and parts, McConnel Ltd will pay, at their discretion, for
any valid claim the invoiced cost of any parts supplied by McConnel Ltd and appropriate
labour and mileage allowances if applicable.
2.06. The submission of a claim is not a guarantee of payment.
2.07. Any decision reached by McConnel Ltd is final.
3. LIMITATION OF LIABILITY
3.01. McConnel Ltd disclaims any express (except as set forth herein) and implied warranties with
respect to the goods including, but not limited to, merchantability and fitness for a particular
purpose.
3.02. McConnel Ltd makes no warranty as to the design, capability, capacity or suitability for use of
the goods.
3.03. Except as provided herein, McConnel Ltd shall have no liability or responsibility to the
purchaser or any other person or entity with respect to any liability, loss, or damage caused
or alleged to be caused directly or indirectly by the goods including, but not limited to, any
indirect, special, consequential, or incidental damages resulting from the use or operation of
the goods or any breach of this warranty. Notwithstanding the above limitations and
warranties, the manufacturer’s liability hereunder for damages incurred by the purchaser or
others shall not exceed the price of the goods.
3.04. No action arising out of any claimed breach of this warranty or transactions under this
warranty may be brought more than one (1) year after the cause of the action has occurred.
4. MISCELLANEOUS
4.01. McConnel Ltd may waive compliance with any of the terms of this limited warranty, but no
waiver of any terms shall be deemed to be a waiver of any other term.
4.02. If any provision of this limited warranty shall violate any applicable law and is held to be
unenforceable, then the invalidity of such provision shall not invalidate any other provisions
herein.
4.03. Applicable law may provide rights and benefits to the purchaser in addition to those provided
herein.
DECLARATION OF CONFORMITY
Conforming to EU Machinery Directive 2006/42/EC
We,
McCONNEL LIMITED, Temeside Works, Ludlow, Shropshire SY8 1JL, UK
Hereby declare that:
The Product; Tractor Trailed Wing Mower
Product Code; TWRS
Serial No. & Date ………………………………… Type …………………………
Manufactured in; United Kingdom
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 12100 (2010) Safety of machinery – General principles for design – Risk
assessment and risk reduction.
■ BS EN 349 (1993) + A1 (2008) Safety of machinery - Minimum distances to avoid the
entrapment with human body parts.
■ BS EN ISO 14120 (2015) Safety of machinery - Guards general requirements for the
design and construction of fixed and movable guards.
■ BS EN 4413 (2010) Hydraulic fluid power. Safety requirements for systems and their
components.
McCONNEL LIMITED operates an ISO 9001:2008 quality management system,
certificate number: FM25970.
This system is continually assessed by the;
British Standards Institution (BSI), Beech House, Milton Keynes, MK14 6ES, UK
BSI is accredited by UK Accreditation Service, accreditation number: UKAS 003.
The EC declaration only applies if the machine stated above is used in
accordance with the operating instructions.
Signed …………………................ Responsible Person
CHRISTIAN DAVIES on behalf of McCONNEL LIMITED
Status: General Manager Date: January 2018
INDEX
General Information
1
Technical Data
2
General Arrangement
3
Safety
4
Safety Decals
7
Installation
8
Operation
12
Maintenance
19
1
GENERAL INFORMATION
Read this manual before fitting or operating the machine. Whenever any doubt exists
contact your dealer or the McConnel Service Department for assistance.
Use only ‘McConnel Genuine Parts’ on McConnel equipment and machinery
DEFINITIONS - The following definitions apply throughout this manual:
WARNING:
An operating procedure, technique etc., which can result in personal injury or loss of life if
not observed carefully.
CAUTION:
An operating procedure, technique etc., which can result in the damage of either machine or
equipment if not observed carefully.
NOTE:
An operating procedure, technique etc., which is considered essential to emphasise.
LEFT AND RIGHT HAND:
This term is applicable to the machine when fitted to the tractor and viewed from the rear.
This also applies to tractor references.
Note: The illustrations in this manual are for instructional purposes only and may on occasion not
show some components in their entirety. In some instances an illustration may appear slightly different
to that of your particular model but the general procedure will be the same. E&OE.
MACHINE & DEALER INFORMATION
Record the Serial Number of your machine on this page and always quote this number when
ordering parts. Whenever information concerning the machine is requested remember also to state
the make and model of tractor to which the machine is fitted.
Machine Serial Number:
Installation Date:
Machine Model details:
Dealer Name:
Dealer Address:
Dealer Telephone No:
Dealer Email Address:
2
TECHNICAL DATA
Tractor Requirements (460 & 600 Models)
Tractor Power: 80HP
PTO Type: Live
PTO Speed: 1000RPM
PTO Size: 1-3/8” 6 spline
Specification
Maxicut 460 Model
Maxicut 600 Model
Machine Weight
2300kg
3250kg
Cutting Blades
3 sets
3 sets
Blade Overlap
150mm
150mm
Cutting Width
4.60m
6.30m
Cutting Height
25 – 375mm
25 – 375mm
Cutting Capacity
50mm (max)
50mm (max)
Overall Width
4.75m
6.30m
Transport Width
2.34m
2.70m
Overall Length
4.47m
5.15m
Wing Lift
Hydraulic
Hydraulic
Wing Flex
112° (90° up / 22° down)
112° (90° up / 22° down)
Wheels
6 (+2 option)
6 (+2 option)
Tyre Size
200/60 14.5 x 10 ply
200/60 14.5 x 10 ply
Tyre Type
Duro-rib
Duro-rib
Tyre Pressure
30 psi
30 psi
2 Blade Option
Yes
Yes
3 Blade Option
Yes
Yes
4 Blade Option
Yes
Yes
Shredder Blade Kit Option
Yes
Yes
3
GENERAL ARRANGEMENT
Overview
Twose Series Maxicut Flex Wing Mowers are available in cutting widths of 4.6 or 6.0 metre.
The cutting height is adjusted hydraulically; a self-levelling system ensures the blades
remain parallel to the ground irrespective of cutting height. The wings are also raised and
lowered hydraulically with power being supplied from the tractors 3 spool valves. The three
gearboxes are provided with slip clutch protection. Replaceable skid shoes and rear lighting
equipment (for highway transport) are provided as standard.
It is essential that the machine is operated in line with the procedures and practices detailed
in this manual.
Component Identification
1, Wing Drive Shaft 2. Divider Box
3. PTO Shaft 4. Gearbox
5. Wing Lift Ram 6. Wing Leveller
7. Levelling Ram
1. Wing Drive Shaft
2. Divider Box
3. PTO Shaft
4. Gearbox
5. Wing Lift Ram
6. Wing Leveller
7. Levelling Ram
Noise
The equivalent daily personal noise exposure from this machine, measured at the operator's
ear, is within the range of 80-85dB when used in conditions where the load fluctuates
between zero and maximum. This applies when the machine is attached to a tractor fitted
with a quiet cab and used in accordance with the operating instructions in a generally open
environment. At equivalent daily noise exposure levels of between 85 and 90dB, suitable ear
protectors are recommended.
4
SAFETY
Safety
Read, Understand and Follow the Safety Messages. Serious injury or death may occur unless
care is taken to follow the warnings and instructions given in the safety messages,
CAUTION! The lowest level of Safety Message; warns of possible injury.
WARNING! Serious injury or possible death.
DANGER! Imminent death/critical injury.
Never operate the tractor or machinery until you have read and completely understand this
manual and the tractor operator’s manual and each of the safety messages found in the
manuals and those displayed on the tractor and implement.
DANGER! DO NOT attempt any maintenance of or adjustment to the machine while it is
running. Before carrying out any work on the machine follow the three safety
instructions below:
a LOWER THE MACHINE ON TO THE GROUND
b PUT THE PTO OUT OF GEAR
c STOP THE TRACTOR ENGINE
WARNING! The operator and all support personnel must wear the appropriate safety clothing
i.e. safety glasses and safety shoes at all times for protection from injury by
objects thrown from the machine.
DANGER! Never allow passengers especially children to ride on the tractor or implement.
Falling off can kill.
DANGER! Do not mount or dismount the tractor or machine while it is moving. Mount or
dismount only when stopped – falling off can kill.
DANGER! At all times ensure that the PTO shaft guard is in position, securely fitted and in
good condition and that the tractor PTO shaft shield is fitted.
CAUTION! Replace the PTO shaft guard if any of the following are evident:- guard cracked
or damaged any part of the PTO shaft exposed. Ensure the PTO shaft guard is
free to rotate and the anti-rotation chains are securely fitted and effective.
WARNING! Ensure that the correct guards are properly fitted to the machine and tractor at all
times and check that they are in good condition. Ensure you have the correct
guards fitted for the type of operation being performed. Missing or damaged
guards must be replaced immediately.
DANGER! AVOID WIRE. It can be extremely dangerous if wire catches in the blades of
the machine, and every care must be taken to ensure this will not happen.
Inspect the working area before commencing. Remove all loose wire and
obstructions and clearly mark those that are fixed so that you can avoid them.
Any unusual noise from the cutting unit area indicates that the blades may
have been fouled by an obstruction. A visual indication that wire has become
entangled may be a sudden movement of the vegetation ahead of the
machine. In any such event STOP the tractor engine INSTANTLY. On no
account move the machine until blades have completely stopped. When the
machine has stopped inspect it and remove any obstruction that may be
present. If working under a raised machine ensure that it is safely supported.
Before working on the machine always stop the tractor engine and remove the
ignition key.
5
WARNING! While the tractor is running all personnel should keep well clear of the area
around the machine as there are numerous crushing, shearing, impact dangers
caused by the machine operation.
DANGER! Do not operate with wings raised off the ground. Operating with the wings
raised exposes the blades and can cause objects to be thrown and there is
also danger of entanglement in or being hit by rotating blades.
DANGER! Do not work under a wing in the raised position unless it is supported on blocks
or propped. A sudden or inadvertent fall by one of these components could
cause serious injury or even death.
DANGER! These machines are capable under adverse conditions of throwing objects
great distances at high velocity. CHECK the blades for wear and the
attachment bolts for tightness every day during work .A few moments
whenever the machine is stopped, e.g. whenever removing obstructions, will
help reduce blade wear or loss.
DANGER! Keep your forward speed to a level appropriate to the operating conditions.
High-speed manoeuvres are very dangerous, particularly on uneven ground
where there is risk of overturning.
DANGER! Keep a careful watch for passers by who may inadvertently get in the way of cut
material being thrown from the machine. These machines are capable under
adverse conditions of throwing objects great distances at high velocity. Stop the
blades until all people are well clear.
WARNING! Extreme care should be taken when operating near loose objects such as
gravel, rocks, wire, and other debris. Inspect the area before mowing. Foreign
objects should be removed from the site to prevent machine damage and/or
bodily injury or even death. Any objects that cannot be removed must be
clearly marked and carefully avoided by the operator. Stop mowing
immediately if blades strike a foreign object. Repair all damage and make
certain the blade and carrier are still balanced before resuming cutting
operations.
WARNING! Transport the machine only at safe speeds. Serious accidents and injuries can
result from operating this equipment at unsafe speeds
DANGER! When the wings are folded for transport, the centre of gravity is raised and the
possibility of overturn is increased. Turn slowly and with extra care on
hillsides. Overturning the mower could cause the mower to overturn the tractor
and vice versa. Never fold wings on a hillside, the mower may overturn.
WARNING! Do not transport unless wings are well secured in the transport position. Wings
that are not well secured can fall during transport, causing serious damage to
the tractor and mower and possibly causing the operator or passers by to be
injured or killed.
WARNING! Release hydraulic pressure from the rams before attempting maintenance. Lower
the machine to the ground and lower the wings or securely block up, disengage
the PTO and turn off the engine.
DANGER! Do not operate this Equipment with hydraulic oil leaking. Oil is expensive and its
presence could present a hazard. Do not check for leaks with your hand! Use a
piece of heavy paper or cardboard. High-pressure oil streams from breaks in the
line could penetrate the skin and cause tissue damage including gangrene. If oil
does penetrate the skin, have the injury treated immediately by a physician
knowledgeable and skilled in this procedure.
6
WARNING! Periodically inspect all moving parts for wear and replace when necessary with
authorised service parts. Look for loose fasteners, worn or broken parts, and
leaky or loose fittings. Make sure all pins have cotter pins and washers.
Serious injury may occur from not maintaining this machine in good working
order.
WARNING! Never un-couple the machine without using the hitch support jack. The hitch is
very heavy. Attempting to lift the hitch without using the jack could cause
strains. Allowing the hitch to fall suddenly and unexpectedly could result in
crushing injury. Use the support jack for lifting the mower only. Overloading the
jack can cause failure with possible serious bodily injury or even death.
WARNING! Never attempt to lubricate, adjust, or remove material from the Implement while
it is in motion or while tractor engine is running. Make sure the tractor engine is
off before working on the Implement.
Emergency Stop
To stop the blades in an emergency use the tractor stop control. The use of the tractor stop
control must only be done in an emergency. Its use to stop the machine can cause damage.
After an emergency stop of the machine; ensure that the PTO is disengaged before restarting
the tractor.
Safety Decals
Safety decals are located on various points of the machine. They can be identified by the
yellow upper panel depicting the hazard, and the lower white panel indicating means of
avoidance or precautions to be taken. These decals have no text. It is essential that all
operators and personnel associated with the machine fully understand their meanings, which
are shown on the following pages. Any safety decals which are found missing should be
replaced immediately.
7
SAFETY DECALS
8
INSTALLATION
Preparing the Tractor
A few simple tasks will be necessary to prepare your tractor for use with the rotary mower.
a Adjust drawbar length according to type of hitch fitted (see Fig. 3 or 6).
b Remove cap from PTO shaft.
c Ensure tractor PTO guard is in place.
d Set tractor tyres out to 1500mm (60”) dimension between tyres.
Fitting Machine to Tractor
WARNING Avoid injury. Ensure there are no bystanders between tractor and machine when
coupling machine to the tractor.
Use the tongue hitch jack to either hitch or unhitch the mower. Be sure the wheels are
properly blocked to avoid rolling.
Clevis (Eye Hitch) Mounting
Place the 25mm (1”) hardened washer (1) under top lip of the clevises to act as wear plate
on drawbar. Install a 25mm (1”) grade 5 or 8 bolt 125mm (5”) long. Install a locknut (3) onto
the bolt beneath the clevis and tighten the 25mm (1”) locknut and bolt securely. (See Fig. 3)
CAUTION NEVER ATTACH MOWER TO TRACTOR WITH A PIN NOT HAVING A NUT.
The two halves of the clevis must be bolted together securely to carry the load
properly without springing or breaking the clevis
CAUTION If attaching mower clevis, tractor drawbar must extend to rear to allow running
without binding in the tongue clevis. DO NOT USE THIS TYPE DRAWBAR
WITHOUT STABILISERS. Install washers the same as detailed previously.
(See Fig. 4.)
9
WARNING Failure to adjust the drawbar to the CORRECT LENGTH, failure to PROVIDE
DRAWBAR CLEARANCE sufficient for short turns and/or failure to ATTACH
CLEVIS TO THE DRAWBAR correctly and securely MAY ALLOW THE
MOWER TO SEPARATE FROM TRACTOR AND/OR THE DRIVELINE
HALVES TO SEPARATE WHICH CAN CAUSE SERIOUS BODILY INJURY
OR DEATH TO THE OPERATOR OR OTHERS.
Parking Jack Adjustment
The tongue hitch is equipped with jack mounting which can be rotated approximately 15° in
each direction so that jack may always be positioned in a near vertical position. (See Fig. 5)
Loosen nut ‘A’, install parking jack and then rotate until jack is vertical. Tighten nut ‘A’.
Always ensure that pin ‘B’ is engaged in the location holes to prevent jack detaching from
mounting.
Pintle Hook Hitch Option
Drawbar length must be modified to obtain dimension “A”, CV driveline = 430mm ± 50mm (17”
± 2”). Use driveline length check procedure in manual to ensure problems do not occur. (refer
to Fig. 6).
PTO Shaft
With the machine attached to the tractor’s drawbar, proceed to connect the PTO as follows:
1 Slide the collar back and simultaneously push driveline yoke into PTO shaft on tractor
until engaged.
2 Move yoke back and forth to make sure yoke is locked in plate. (QS-type collars will
rotate 360º when balls are correctly located.).
WARNING A loose yoke could slip and cause personal injury or damage to mower. When
attaching driveline yoke to tractor PTO shaft, it is important that the slide collar
is fully forward and seated on yoke.
Due to many different makes and sizes of tractor to which mowers may be fitted, a nominal
length PTO shaft is supplied with the machine. In some cases it may be found that this PTO
shaft is too long and will have to be shortened.
10
IMPORTANT MINIMUM ENGAGEMENT OF PTO IS 150MM IN THE WORKING POSITION.
THIS MEASUREMENT MUST BE TAKEN INTO ACCOUNT WHEN SHORTENING THE PTO
SHAFT.
Before fitting PTO shaft to tractor, grease the sliding drive shafts and bearing units.
a Fit PTO to tractor ensuring locking peg on the splined coupling is fully engaged.
b Attach PTO guard check chains to tractor and machine.
Safety Chains
When towing implements on the highway use the safety chain provided, with a tensile
strength equal to or greater than the gross weight of the implement to be towed by the
tractor. This will control the implement in the event the hitch bolt is lost.
After attaching the safety chain, make a trial run by driving the tractor to the right and to the
left for a short distance to check the safety chain adjustment. If necessary, re-adjust to
eliminate tight or loose chain.
Hydraulics
A three-spool control valve (optional equipment) is available from your dealer for use with
tractors having either an open or closed centre hydraulic system. To install the hydraulics
from the machine to the control valve, connect the centre axle lift cylinder hose to the right
port on the hydraulic valve. Connect the wing-folding cylinder hose to the left side of the
control valve as the cylinders are on the mower rather than crossing the hoses. Remove
plastic plug from breather of cylinder before operation.
The control valve handles should be set in the float position for most mower operations. This
will allow the mower sections to follow the contour of the land. In the float position, the
control valve handles are pushed in closest to the valve body. The closed-centre valve
handles must be kept in the float position to keep the wings and centre section from creeping
up. When extending the left or right wing out over a ditch when mowing, put the control
valve handles with detents in the centre position on the valve. This will give the mower more
stability and prevent the opposite wing from rising. Do not operate mower in this position
over rough terrain or for long periods of time.
Keep hoses and couplings free from contamination. Never leave a disconnected end of
hose open. Be sure the hoses are supported by the two hose brackets and are not allowed
to come into contact with drivelines.
11
In case of valve or cylinder malfunction, contact your local dealer. If it becomes necessary to
remove the piston from the cylinder, apply a few drops of “Loctite No 227” to nut before
replacing.
Clutch Adjustment
3 slip clutches are fitted to protect the blades, drivelines, gearboxes, tractor etc. Machines
are supplied set to a low torque and clutches should be adjusted prior to first use, as detailed
in Maintenance Section.
12
OPERATION
Height of Cut
To achieve maximum cutting efficiency and provide the most uniform cut the mower should
be operated with the rear slightly higher 12mm - 20mm (1/2” - 3/4”) than the front.
IMPORTANT: Avoid very low cutting heights. Striking the ground with blades gives the most
damaging shock loads a mower can encounter and will cause damage to
mower and driveline.
Levelling the Centre Section
1 Place the tractor and mower on a level surface.
2 Using the centre axle hydraulic cylinder, raise or lower the centre section to the
approximate cutting height.
3 Level the mower deck front to rear by adjusting the levelling rods linking the hitch and
rear axle. To lower front, lengthen level rods and to raise front, shorten level rods. (See
Fig. 7).
IMPORTANT: Adjust level rods to the same length to maintain equal tension in rods.
Improper adjustment may cause rods to snap or bend.
4 Once machine has been levelled according to directions, the exact cutting height can be
set. Use split collar assemblies provided, inserted on centre axle hydraulic cylinder rod, to
set height so when cylinder is lowered against collars, the desired cut height is set
Levelling Wings with Centre Section
1 To level the wings, with the centre section adjust the levelling screw between the wing
axle and the centre axle. To lower the wings, shorten the levelling screw assembly and to
raise the wings, lengthen the levelling screw assembly. (See Fig. 8).
IMPORTANT: Refer to Transport Information page.
LEVELLING SCREW
13
Pre-Start Checks
Before operating the machine it is advisable to carry out the following checks.
a. Check that the blades are free of obstructions especially pieces of wire.
b. Check that the blades are in good condition and securely attached.
c. Ensure all guards are in position and in a serviceable condition.
d. Examine the work area and remove or identify hidden obstructions, posts and wire etc.
Starting & Stopping the Mower
Power for operating the mower is supplied from tractor PTO. Refer to your tractor manual
instructions for engaging and disengaging the PTO. Always engage to the PTO at low
engine rpm. Always operate at recommended PTO speed. Always reduce engine speed to
idle rpm before disengaging PTO. Learn how to stop tractor and mower quickly in case of
emergency.
IMPORTANT Stop mower and tractor immediately upon striking an obstruction. Inspect the
mower and repair any damage before resuming operation. Do not engage PTO
when engine is at full PTO rpm. Always idle engine before disengaging PTO.
WARNING Avoid personal injury. When attempting to stop a tractor which does not have a
live PTO, the momentum created by the blade carrier of a rotary mower can
cause the tractor to be pushed forward. DO NOT 0perate this mower unless
tractor has live or independent PTO.
To commence operation, reduce engine speed and engage the tractor PTO. Before starting
to cut, gradually increase engine speed to develop full PTO speed.
DANGER Chain guards must be installed if operating with people or livestock in the area or
close to highways or buildings and in all non-agricultural operations.
Enter the area to cut with the mower operating at PTO speed and, if it becomes necessary to
temporarily regulate engine speed during operations, increase or decrease the throttle
gradually.
To transport the machine, disengage the PTO, raise centre section and wings to full
transport height stop tractor and install transport bars and ratchet straps.
WARNING When lowering wings from transport position be sure all persons are clear of
wings. Do not work under wing in raised position unless transport lock bar is in
place.
IMPORTANT Wing hydraulic cylinders should always be controlled by a tractor valve or
remote valve which has float detent position which allows wings to float over
uneven terrain
Cutting Speed
Proper ground speed for cutting will depend upon the height, type and density of material to
be cut. Normally, ground speed will range from 2 - 5 mph. Tall, dense material should be cut
at low speed while thin medium height material can be cut at a faster ground speed.
WARNING Do not attempt to raise wings on slopes or banks. Move machine to level area
before attempting to raise wings
14
Cutting Tips
Always operate the PTO at recommended rpm when cutting. This is necessary to maintain
proper blade speed and to produce a clean cut.
Under certain conditions, tractor tyres may roll some grasses down and prevent them from
being cut at the same height as the surrounding area. When this occurs, reduce the tractor
ground speed but maintain the PTO rpm. The lower speed will permit grasses to be at least
partially rebound and be cut. Taking a partial cut and/or reversing the direction of travel may
also produce a cleaner cut.
Extremely tall grass should be cut twice. Raise mower and cut twice the desired height. Cut
the second time at desired height at 90 degrees to first pass.
Remember, sharp blades produce cleaner cuts and use less power.
DANGER Wing sections should be raised only for clearance of obstructions; never for
continuous cutting operations. Cutting with wings
raised above the ground surface exposes the blades
and can cause objects to be thrown from under
guards at a very high velocity and can cause
property damage, bodily injury or even death!
DANGER DO NOT raise wing with blades rotating if bystanders are within 100m (300 ft).
CV Driveline Check Procedures
The main driveline to tractor is equipped with a special constant velocity (cv) joint that allows
the joint to run smoother with no vibration even at joint angles up to 80º. This joint will
operate and perform satisfactorily as long as it is not subjected to conditions, which abuse it
or go beyond its operating limits.
The constant velocity joint must be greased daily at 8 hour intervals, see maintenance
section.
Failure to lubricate as instructed will cause rapid wear and failure of operating components of
joint. The constant velocity joint must not be subjected to a joint angle greater than 80º, (See
Fig. 9), for short duration, or 25º maximum for continuous operation.
15
To check maximum joint angle, connect cutter to tractor. Do not connect driveline at this
time. Start tractor and make a maximum turn to the left until tractor tyre almost contacts
frame. Then check joint by holding driveline yoke above PTO shaft and then angle driveline
yoke until it stops. There should be approximately a 10 degree difference between centre
line of yoke and PTO shaft, (See Fig. 10) if not, check drawbar length and shorten if
necessary.
The constant velocity joint must not be subjected to conditions where the telescoping tubes
‘bottom out’. Check this condition using driveline length check procedure.
NOTE: If the driveline will not connect because it does not have enough clearance,
check to see if the drawbar can be lengthened or alternatively cut the driveline
shield and tube lengths to provide adequate clearance.
Driveline Length Check Procedure
WARNING A loose shaft could slip off and result in personal injury or damage to mower.
When attaching PTO yoke to tractor PTO shaft, it is important that spring
activated locking collar slides freely and locking balls are seated in groove on
PTO shaft – Note: QS-lock is fully engaged if collar can be rotated freely.
WARNING Before operating mower, check to make sure the driveline will not bottom out or
become disengaged.
Disengage the driveline from the tractor PTO shaft
Slide the driveline together until it “bottoms out” solidly. Extend shaft 40mm,
then apply coloured tape level with outer tube shield. This shows maximum
shaft length.
Slide the driveline apart until ½ PU length of inner shaft shield is exposed (see
Fig. 11), apply coloured tape level with outer tube shield as before. This then
indicates maximum shaft length.
Re-attach driveline to tractor PTO shaft.
With the PTO NOT TURNING, (disengaged) slowly drive the tractor with mower attached
through the most severe terrain conditions expected and watch shaft movement. The end of
the outer shield should always be located between the two rings of tape.
16
Check position which places driveline at maximum extended length and at minimum
compressed length. The minimum compressed length should always maintain 40mm (19/16”) clearance. If not, shorten as described in Fig. 12.
If driveline cannot be shortened and still maintain 1/2 PU dimension engagement, when at
maximum extended length, then the operator should be aware of it, so the operator can
recognise the terrain conditions that might cause problems (avoiding possible damage by
disconnecting driveline from tractor) and cross the terrain in a different manner. If driveline is
shortened, re-apply the coloured tapes and re-check length, as previously. See special
instructions for rough terrain operation.
Figure 12
Special Instructions for Rough Terrain Operations
When crossing ditches with steep banks or going up sharp inclines, it is possible to “bottom
out” the driveline that connects the tractor PTO to the gearbox on mower.
Note: To bottom out means that the inner shaft has penetrated into the outer housing to its
maximum depth until the assembly becomes solid - it can shorten no more (See Fig. 13).
If this happens, it can cause serious damage to the tractor PTO by pushing the PTO into the
tractor and through the support bearings or downward onto the PTO shaft, breaking it off.
Figure 13
WARNING Either failure can allow the driveline to come loose from the tractor which could
cause bodily injury to the operator or others in the vicinity along with expensive
damage to the tractor and/or mower.
17
If you have a condition where you tractor will be going up a steep incline with your mower
still on the flat area or coming down the opposite incline, you have a potential problem (See
Fig. 15). The correct preventative measure is to instruct the operator to cross this kind of
terrain at an angle (See Fig. 14). This will reduce the angle between the tractor and the
mower. The problem is more likely to occur if the mower is in the raised position while the
tractor is turning sharply and going up an incline.
Transporting Mower
When transporting the mower, keep the centre section as low to the ground as is practical to
increase stability. Raise the left and right wing sections and use the transport lock bars /
ratchet straps to retain them in the upright position.
1. Raise wings to full height.
2. Install transport lock bars.
NOTE: If the transport lock bars (when fitted) can not be easily installed, lower wings
remove rod end of cylinder and adjust the rod clevis in or out to match transport bar
length. Always attach ratchet straps.
3. Raise centre section.
4. For transport on the public highway ensure width does not exceed 3.0m. To
reduce width and increase stability, lower centre section.
WARNING: “Agricultural Vehicles on the Road” (See Table below)
WIDTH
CONDITIONS OF USE
2.55 to 3 metres
Speed Limit 20mph ** (see caution below)
3 to 3.5 metres
As above plus 24 hour conditional notification to the Police*
Explanation of requirements in table above
*24 hour conditional notification to police; if any part of the journey will be on a road with a
speed limit of 40mph or less, or the journey will exceed five miles then 24 hours notice to police
is required for each police area the journey will pass through.
Should you have any queries you are advised to contact the “Abnormal Loads Officer” at
your local police authority.
WARNING This machine can overturn. Use caution when operating in transport position.
Limit speed and avoid sharp turns and rough terrain. Be especially careful on
rutted roads where the inner rear wheels can ride on the raised ground
between the ruts.
WARNING Keep everyone clear while lifting or lowering mower or
when raising and lowering the wings.
CAUTION Do not exceed 18mph (30Km/h) with pneumatic tyres.
(See maintenance section)
CORRECT
Approach ditch at an angle
Figure 14
INCORRECT
DO NOT approach ditch straight on
Figure 15
18
WORK POSITION
TRANSPORT POSITION
WARNING Use the tractor warning lights, reflectors and other devices for adequate
warning to the operators of other vehicles. Comply with local government
regulations at all times.
IMPORTANT On 4.6m (15ft) models an alternative
hole is provided to reduce the
transport width of the machine (see
illustration). This position should be
selected with the wing vertical and the
transport straps in place.
Detaching and Storing
Lower the mower to the ground. Park the tractor with the transmission in neutral. Set the
parking brake, shut off the engine and remove the key. Wait until the PTO stops rotating
before getting down from the tractor. Apply chocks to the mower rear wheels.
Raise hitch with parking jack. Disconnect driveline from tractor PTO shaft. Remove hitch
bolt. Drive the tractor forward to clear hitch, lower mower front skids onto baulks of timber,
using the jack.
Always refit the shield over the tractor PTO shaft. This shield should always remain in place
except when connecting or disconnecting driveline.
Keep hands and feet out from under hitch or mower at all times.
19
MAINTENANCE
Maintenance
Before operating your rotary mower, make sure it is properly lubricated and thoroughly
inspected. Only a minimum of time and effort is required to regularly lubricate and maintain
this machine to provide long life and trouble free operation.
WARNING Always disengage the PTO before raising the rotary mower for transporting or
making adjustments.
Lubrication Information
Do not let excess grease collect on or around parts, particularly when operating in sandy
areas. The accompanying illustration shows lubrication points. The chart states frequency of
lubrication in hours based on normal operating conditions. Severe or unusual conditions may
require more frequent lubrication. Figure 1
Use an SAE multi-purpose, lithium-type grease for all locations shown except location no. 2.
On centre and wing gearbox use recommended lubricant on following page. Be sure to clean
the fitting thoroughly before using grease gun. Daily lubrication of the wing driveline slip joint
is necessary. Failure to maintain proper lubrication will result in damage to U-joints, gearbox
and/or driveshaft. Figure 1
20
Hitch Assembly
The hitch pins attach the drawbar assembly to the centre section and should be checked
regularly for signs of wear or cracking. Replace as needed. The drawbar 25mm (1”) bolt
fastens to mower to the tractor drawbar. When the mower is un-hitched and this 25mm (1”)
bolt is removed, examine for signs of cracking or wear. Replace the drawbar 25mm (1”) bolt
at first sign of either problem.
Centre & Wing Gearboxes
The gearboxes have been filled with lubricant to the test plug level prior to despatch.
However, you should check the oil level at test plug before operating and frequently
thereafter.
The gearbox should not require additional lubricant unless the box is cracked or a seal is
leaking. It is recommended that the oil level plug be removed after every 8 to 10 hours of
operation and oil added until it runs out of test plug hole. The test plug on the centre
gearbox, right and left wing gearbox is located on the side of the gearboxes. Filler plugs are
located on top of all gearboxes (See Fig. 3).
Recommended lubricant is Exxon - Spartan EP220, Mobil HD 80W90 or equal. Required
lubricant is SAE 90 or SAE EP80W90T with EP additives for extreme pressure and
temperature with an API-GI-5 service rating.
21
GREASE WEEKLY
Divider Gearbox
The test plug for the divider gearbox
is located on the right side of the
input shaft. The filler pressure relief
plug is on top of the gearbox.
(See Fig. 4).
CAUTION Do not over-fill.
If gearboxes are filled above test
plug level, pressure under working
conditions may cause the grease
seals to leak.
Recommended lubricant is; NLGI 000 grease
Wheel Hub Assembly
The wheel hub assemblies need to be lubricated on a weekly basis.
Recommended Tyre Pressure; 30 psi. (2bar)
Drivelines
The drivelines and U-joints should be inspected each time before the mower is started.
Figs 5 & 6.
The U-joint and CV joint on the driveline undergo extreme forces when the unit is turning or
when the wings are being raised. It is important that the U-joints and CV joint are greased each
day before the machine is started. The U- joints are located at each end of the centre and wing
drivelines. The CV joint is located at the end of the main driveline. The U-joint and CV joint
assemblies are accessible by rotating the driveline safety shield until the hole in the shield
matches up with the grease fitting. Use no. 2 bearing grease for lubrication. Inspect the U-joint
for wear by holding the shaft on one side of the U-joint while trying to rotate the shaft on the
other side of the U-Joint. If there is noticeable movement in the driveline, replace the U-joint
before it causes severe damage to the driveline.
22
Blade Servicing
Inspect blades before each use to determine that they are properly installed and in good
condition. Replace any blade that is bent, excessively nicked, worn or has any other
damage. Small nicks can be ground out when sharpening.
WARNING Use only original equipment blades on this mower. They are made of special
heat-treated alloy steel. Substitute blades may not meet specification and may
be dangerous.
Blade Sharpening
Always sharpen both blades at same time to maintain balance. Follow original sharpening
pattern as shown in Figure 23. Always sharpen blades by grinding. DO NOT heat and pound
out edge. DO NOT sharpen blade to a razor edge, but leave a 2mm (1/16”) blunt edge. DO
NOT sharpen back side of blade.
IMPORTANT When sharpening blades, grind each blade the same amount to maintain
balance. The difference in blade weights should not exceed 25g (1 ounce).
Unbalanced blades will cause excessive vibration, which can damage gearbox
bearings. Vibration may also cause structural cracks in cutter housing.
WARNING Never work under equipment supported by a hydraulic device because it may
drop if the control is actuated (even with the engine stopped) or in the event of
hose failure etc. Always use a secure support for equipment which must be
serviced in the raised position.
Blade Removal
To remove blades for sharpening or replacement, remove
the cover plate on deck of the machine near the gearbox.
Remove the locknut from blade bolt.
NOTE: Inspect the locknut after removal and replace if the
threads are damaged. Always replace the nut when
replacing a blade bolt. When installing blades; check the
blade bolt pivot diameter for wear. Replace the bolt if worn
more than 6mm (1/4”) at any point. Install the blade bolts
with partially worn side of bolt either toward or away from
centre. Tighten locknut to 250ft.lbs. (340 Nm).
WARNING Avoid personal injury. The blade and/or
blade carrier removal should be done only
with the tractor engine shut off, key
removed, in neutral, parking brake on, PTO
disengaged and the cutter blocked in the
raised position.
23
Blade Carrier Removal
Remove cotter pin and loosen slotted nut on gearbox shaft. Loosen but do not remove the
nut until the blade carrier is loosened. Use a suitable two-jaw gear-puller to pull carrier off
tapered gearbox shaft. If a gear puller is not available use a long bar inserted through blade
bolt access hole with end against rotor bar. Strike opposite end of bar with sledge hammer.
Rotate blade carrier 180 degrees and repeat process.
Blade Carrier Installation
Clean the splines on both the blade carrier and output shaft. Position carrier on the gearbox
output shaft and install flat washer and 25mm (1”) hex nut. Tighten nut holding blade carrier
to minimum 450ft. lbs, strike the carrier on the hub several times with a heavy hammer to
seat the hub. Use a suitable spacer over the nut to prevent damage to the nuts and threads.
Re-tighten the nut to 450 ft lbs (610Nm) Install and spread cotter pin.
NOTE After a few hours of operation always re-check blade carrier retaining nut torque.
WARNING Avoid personal injury. Do not work under the machine without support blocks to
prevent the frame from falling.
Slip Clutches
Three slip clutches are incorporated in drivelines. They are designed to slip, absorb the
shock loads and protect the drive components. Ideally the clutches will slip on start-up, to
clean the mating surfaces, but then grip to provide sufficient cutting power.
Machines are supplied initially with slip clutches set to a low torque valve, to ensure that all
slip when powered up for the first time. The slip clutches should be reset before putting to
work. The centre clutch should have its springs adjusted to 33.0mm long. The outer clutches
should have their springs adjusted to 39.0mm long, as detailed in ‘seasonal clutch
maintenance’.
After the first hour of operation, check clutches for overheating, check weekly thereafter. To
adjust the clutch, tighten all the spring nuts equally 1/6 (maximum) turn at a time. Do not
adjust below minimum dimension stated – Fig. 25.
The lining plates are 3mm (1/8”) thick when new. Replace after 0.75mm (1/32”) wear. If the
mower has been idle for an extended period of time, or in wet weather, before operating
check to be sure the friction lining plates are not rusted/corroded together. Should this occur
refer to the procedure described in the Seasonal Clutch Maintenance section below.
There are four friction lining plates per slip clutch. These should be checked weekly for oil or
grease, wear and moisture which could cause corrosion on the drive plates.
Seasonal Clutch Maintenance
It is important that the clutches slip when an obstacle or load heavier than the clutch setting
is encountered. Therefore, if the machine sits outside longer that 30 days and is exposed to
rain and/or humid air, it is important to make sure that the clutch lining plates are not
rusted/corroded together. Before using the machine, use the following procedure to make
sure the clutch will slip and give the overload protection required.
1. Measure spring length (should be 33.0mm on centre clutch, 39.00mm on outer clutches).
2. Loosen nuts (Figure 25) on springs until the springs can freely rotate, yet remain secure
on bolts.
3. Mark outer plates as shown in Figure 25.
4. Set the engine speed at 1200 rpm.
24
DRIVE SHAFTS
Centre Shaft
Wing Shaft Normal Minimum Normal Minimum Model
Walterscheild Shafts 00775340 1048055 38.0mm 37.2mm 39.0mm 38.0mm SR15
EG Shafts (Comer) 00756581 00757375A 33.7mm 33.0mm 33.7mm 33.0mm SR15
EG Shafts (Comer)
00756633A 33.3mm 31.75mm 33.3mm 31.75mm SR20
Centre Shaft
Wing Shaft
Part Numbers
SLIP CLUTCH SPRING SETTINGS
5. Engage the PTO (approximately one second) and then quickly disengage it. The friction
lining plates should break loose (check the mark).
6. Turn tractor off. Inspect mark on plates – should be out of alignment, showing that slip
clutches have operated. If not, completely dismantle and clean all mating surfaces.
7. If test power ok, tighten the nuts on the springs to their original position and replace all
guarding.
Hydraulic Hoses
Replace pinched and damaged hydraulic hoses at once. Tighten any hydraulic fitting with
fluid leaking from it. Care must be exercised when tightening hydraulic fittings as over
tightening can cause the fittings to fracture and require replacement fittings.
When refitting hoses avoid kinks and sharp bends and ensure that hoses do not chafe on
sharp edges. Always allow enough hose for free movement.
Hydraulic Cylinders
Although a small amount of oil will be present from bleeding at all hydraulic fittings,
significant amounts of oil leaking around the breather plug on the cylinder indicates that the
seals in the cylinder are worn out. Replace the seals in the cylinder immediately before the
cylinder is damaged or too much hydraulic fluid is lost.
Skid Shoes
Skid shoes are made of carbon steel to reduce wear and increase service life. Premature
wear can be caused by the mower centre or wing sections being set loo low which allows the
wing skid shoes to drag on the ground. Dragging the skid shoes on the ground or running
the skid shoes into solid objects can contribute to early frame failure on the mower. Replace
worn skid shoes as required.
25
TORQUE SETTINGS FOR FASTENERS
The Chart below lists the correct tightening torque for fasteners. The Chart should be
referred to when tightening or replacing bolts in order to determine the grade of bolt and the
correct torque unless specific torque values are assigned in the text of the manual.
Recommended torque is quoted in Foot-Pounds and Newton-Metres within this manual. The
equation for conversion is 1 Nm. = 0.7376 ft.lbs
TORQUE VALUES FOR IMPERIAL BOLTS
Bolt
Dia. ft.lb. Nm. ft.lb. Nm. ft.lb. Nm.
1/4" 5.5 7.5 9 12.2 12.5 17.0
5/16" 11 15.0 18 25.0 26 35.2
3/8" 20 27.0 33 45.0 46 63.0
7/16" 32 43.0 52 70.0 75 100.0
1/2" 50 68.0 80 110.0 115 155.0
9/16" 70 95.0 115 155.0 160 220.0
5/8" 100 135.0 160 220.0 225 305.0
3/4" 175 240.0 280 380.0 400 540.0
7/8" 175 240.0 450 610.0 650 880.0
1" 270 360.0 675 915.0 975 1325.0
1-1/8" 375 510.0 850 115.0 1350 1830.0
1-1/4" 530 720.0 1200 1626.0 1950 2650.0
1-3/8" 700 950.0 1550 2100.0 2550 3460.0
1-1/2" 930 1250.0 2100 2850.0 3350 4550.0
TORQUE VALUES FOR METRIC BOLTS.
Bolt
Dia. ft.lb. Nm. ft.lb. Nm. ft.lb. Nm. ft.lb. Nm.
6mm 4.5 6.1 8.5 11.5 12 16.3 14.5 20.0
8mm 11 14.9 20 27.1 30 40.1 35 47.5
10mm 21 28.5 40 54.2 60 81.4 70 95.0
12mm 37 50.2 70 95.0 105 140.0 120 160.0
14mm 60 81.4 110 150.0 165 225.0 190 260.0
16mm 92 125.0 175 240.0 255 350.0 300 400.0
18mm 125 170.0 250 340.0 350 475.0 410 550.0
20mm 180 245.0 350 475.0 500 675.0 580 790.0
22mm 250 340.0 475 645.0 675 915.0 800 1090.0
24mm 310 420.0 600 810.0 850 1150.0 1000 1350.0
27mm 450 610.0 875 1180.0 1250 1700.0 1500 2000.0
30mm 625 850.0 1200 1626.0 1700 2300.0 2000 2700.0
Head Marking
12.9
Value (Dry)
Value (Dry)
Value (Dry)
Head Marking
Head Marking
8.8
10.9
Head Marking
4.8
Value (Dry)
Value (Dry)
Value (Dry)
Value (Dry)
Head Marking
Head Marking
Head Marking
No Marks
Three Lines
Six Lines
Grade Two
Grade Five
Grade Eight
NOTE:
The values in
the chart apply
to fasteners as
received from
the supplier,
dry or when
lubricated with
normal engine
oil. They DO
NOT apply if
special
graphited,
molydisulphide
greases, or
other extreme
pressure
lubricants are
used. This
applies to both
UNF and UNC
coarse threads.
26
Hub Assembly
When attempting taper roller bearing adjustment it should be noted that there is not a
specified torque setting for the shaft crown nut since there should always be axial play (end
float) with a taper roller bearing set up.
On the hub – stub axle set up the bearings are held axially by a wide base crown nut.
With the double drilling of retention clip holes in the threaded shaft end a +45° to -45°
adjustment is possible in order to give maximum axial play (end float) on the bearings of
0.18mm.
Bearing Adjustment
1. Ensure that the spindle is clean and that the front bearing can slide on the front spindle.
Fit back-up spacer (washer).
2. Fit the rear grease seal, rear bearing, hub and front bearing to the spindle (ensure front
and rear taper roller bearings are packed with grease) and screw on the crown nut.
3. Using the appropriate spanner ( a torque wrench is not required) tighten the crown nut
while turning the hub clockwise until the bearing friction begins to drag (the hub becomes
difficult to turn, do not tighten to the point where the hub will not turn at all).
4. Turn back the crown nut (anti clockwise) until the hole in the spindle and slot in the crown
nut line up, (if the hole and the slot line up at the point of tightening as in the previous
paragraph it is essential that the crown nut is turned anti-clockwise until the hole and slot
again line up).
5. Insert the retention pin and hook the bow spring into the appropriate groove in the crown
nut.
6. Check the adjustment by turning the hub clockwise. The hub should turn freely the only
friction should be the rear grease seal.
7. Partially fill the metal hub cap with grease and knock into position into the end of the hub.
8. Recheck the bearing set up and hub grease content after 40 hours operation and then
every week.
McConnel Limited, Temeside Works, Ludlow, Shropshire SY8 1JL. England.
Telephone: 01584 873131. Facsimile: 01584 876463. www.mcconnel.com
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