JCB 526-55 Telescopic Handler Service Repair Manual.pdf

General Information 1
Care & Safety 2
Routine Maintenance 3
Attachments A
Body & Framework B
Electrics C
Controls D
Hydraulics E
Transmission F
Brakes G
Steering H
Engine K
R
Service
Manual
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LO
OA
AD
DA
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PUBLISHED BY THE
TECHNICAL PUBLICATIONS DEPARTMENT
OF JCB SERVICE; ©
WATERLOO PARK, UTTOXETER,
ST14 5PA, ENGLAND
Tel. 01889 - 590312
PRINTED IN ENGLAND
Publication No. 9803/3610 Issue 10

Introduction
This publication is designed for the benefit of JCB Distributor Service Engineers who are receiving, or have received, training
by JCB International Training Centre.
These personnel should have a sound knowledge of workshop practice, safety procedures, and general techniques associated
with the maintenance and repair of hydraulic earthmoving equipment.
Renewal of oil seals, gaskets, etc., and any component showing obvious signs of wear or damage is expected as a matter of
course. It is expected that components will be cleaned and lubricated where appropriate, and that any opened hose or pipe
connections will be blanked to prevent excessive loss of hydraulic fluid and ingress of dirt. Finally, please remember above all
else SAFETY MUST COME FIRST!
How to use this manual
The manual is compiled in sections, the first three are numbered and contain information as follows:
1 = General Information - includes torque settings and service tools.
2 = Care & Safety - includes warnings and cautions pertinent to aspects of workshop procedures etc.
3 = Routine Maintenance - includes service schedules and recommended lubricants for all the machine.
The remaining sections are alphabetically coded and deal with Dismantling, Overhaul etc. of specific components, for example:
A = Attachments
B = Body & Framework ...etc.
The page numbering in each alphabetically coded section is not continuous. This allows for the insertion of new items in later
issues of the manual.
Section contents, technical data, circuit descriptions, operation descriptions etc are inserted at the beginning of each
alphabetically coded section.
READ the section contents to locate machine types, machine type identification IS NOT listed on individual pages.
All sections are listed on the title page; tabbed divider cards align directly with individual sections on the front cover for rapid
reference.
Where a torque setting is given as a single figure it may be varied by plus or minus 3%. Torque figures indicated are for dry
threads, hence for lubricated threads may be reduced by one third.
'Left Hand' and 'Right Hand' are as viewed from the rear of the machine facing forwards.
This Service Manual covers the following machines, from Serial Number 277001
520-55 RS (Rear Steering) Farm Special & Construction
520-55 AWS (All Wheel Steering) Farm Special & Construction
526-55 Farm Special & Construction
526-55 AWS (All Wheel Steering) Farm Special & Construction
526S AWS (All Wheel Steering) Farm Special & Construction
9803/3695 Issue 5*
*

Description
The machine incorporated twin brake
pedals to operate an independent brake
circuit controlling each of the front
wheels. This allowed single wheel braking
to reduce the turning circle. The pedals
could be locked together for road use.
The machine was also equipped with
manually selectable 2/4-wheel drive.
The machine was fitted with permanent
four wheel steering and four-wheel
braking.
Introduced as a development of the 520-
55 with a stronger inner boom and larger
lift, tilt and displacement rams. The
machine was fitted with JCB
manufactured axles and drop box, and
incorporated four-wheel power brakes.
The machine was equipped with three
manually selectable steering modes and
an optional turbo-charged engine was
available.
520-55 and 526-55 machines re-named
520 and 526. These machines
incorporated a revised hydraulic tank,
plastic fuel tank, fenders and engine
cover.
The 526 and 526S machine incorporated
a longer wheelbase to allow for 24in.
wheels and tyres on the 526S machine
only.
Drop box fitted with helical gears from
axle serial number 453/275/00005.
Introduced as a 90 hp turbo-charged
engine version of the 520 machine. The
stronger inner boom on the 526 was
introduced to cope with the increased
engine power.
9803/3630 Issue 1
Machine History
Date
1993
Serial No.
277001
1994
Serial No.
277386
278610
1994
Serial No.
277468
1996
Serial No.
278967
1996
Serial No.
279289
280300
280577
1996
Serial No.
279598
Machine
520-55 RS
(277001 - 279114)
Machine introduction
520-55 AWS (504B N.Am)
(277386 - 278966)
JCB axles, drop box and 4 wheel power
brakes fitted.
526-55
(277467 - 278966)
520 & 526
520 (278967 onwards)
526 (278967 - 279567)
526, 526S (526 Am.N)
(279289 onwards)
ECU controlled powershift available as
an option. Single lever control and trailer
braking. Power brakes replaced by
inboard, front axle brakes.
ECU control was replaced by relay
controlled transmission.
520S
(279598 onwards)

i
Section 1 General Information
9803/3610
Section 1
i
Issue 2*
Contents Page No.
Identification 1 - 1
Torque Settings 2 - 1
Service Tools
- Numerical List 3 - 1
- Section B 3 - 3
- Section C 4 - 1
- Section E 5 - 1
- Section F 6 - 1
- Section H 7 - 1
- Section K 7 - 1
Sealing and Retaining Compounds 8 - 1
*

1 - 1
Identification Plate
Your machine has an identification plate V mounted as
shown. The serial numbers of the machine and its major
units are stamped on the plate.
Explanation of Vehicle Identification Number (VIN)
SLP52655RE0277001
A B C D E
A World Manufacturer Identification SLP = JCB
B Machine Model 526-55
C Year of Manufacture S
P = 1993 V = 1997 1 = 2001
R = 1994 W = 1998 2 = 2002
S = 1995 X = 1999 3 = 2003
T = 1996 Y = 2000 4 = 2004
D Manufacturing Location E = England
E Machine Serial Number 0277001
Machine Model Explanation
526 - 55
F G H
F 500 Series machine range
G 2.6 tonnes lift capacity
H 5.5 meters lift height
With the introduction of the longer wheel base machine the
lift height has been deleted from the serial number.
526
F G
F 500 Series machine range
G 2.6 tonnes lift capacity
General Information
9803/3610
1 - 1
Issue 4*
Section 1 Section 1
V
V
S195340
Unit Identification
The engine serial number is stamped on label W which is
fastened to the right side of the cylinder block at Y, near the
fuel filter.
Explanation of Engine Identification Number
Typical Engine Identification Number
AA 50261 U 500405 P
A B C D E
A Engine Type:
A series
AA = 4 cylinder naturally aspirated
AB = 4 cylinder turbo
AK = 4 cylinder turbo - low emission, stage 1
AR = 4 cylinder naturally aspirated - low
emission, stage 1
R Series
RE = 4 cylinder naturally aspirated, low
emission, stage 2
RG = 4 cylinder turbo, low emission stage 2
B Build Number
C Country of Manufacture
D Engine Serial Number
E Year of Manufacture
If service information or parts are required, the complete
engine number should be quoted.
If there is also a number marked ‘TPL No’, this should be
quoted also.
If a short engine has been fitted in service, two engine serial
numbers and a TPL No. are stamped on the serial number
plate as at Z. All the numbers should be quoted when
requiring parts or information.
Note: Where the procedures in this service manual differ
according to engine types, the text and/or illustrations will
specify which engine types apply.
Transmission and axle identification is shown on the next
page.
Y
W
Z
*
*

1 - 2
9803/3610
Section 1
1 - 2
Issue 2
The Syncro Shuttle serial number is stamped on label Y as
shown.
The rear axle serial number is stamped on plate X as shown.
The front axle serial number is stamped on plate Z as shown.
X
X
S196280
Z
Z
S196290
Y
Y
S088470

2 - 1
9803/3610
Section 1
2 - 1
Issue 2*
Torque Settings
Use only where no torque setting is specified in the text. Values are for dry threads and may be within three per cent of the
figures stated. For lubricated threads the values should be REDUCED by one third.
UNF Grade 'S' Bolts
Bolt Size Hexagon (A/F) Torque Settings
in (mm) in Nm kgf m lbf ft
1
/4 (6.3) 7
/16 14 1.4 10
5
/16 (7.9) 1
/2 28 2.8 20
3
/8 (9.5) 9
/16 49 5.0 36
7
/16 (11.1) 5
/8 78 8.0 58
1
/2 (12.7) 3
/4 117 12.0 87
9
/16 (14.3) 13
/16 170 17.3 125
5
/8 (15.9) 15
/16 238 24.3 175
3
/4 (19.0) 11
/8 407 41.5 300
7
/8 (22.2) 15
/16 650 66.3 480
1 (25.4) 11
/2 970 99.0 715
11
/4 (31.7) 17
/8 1940 198.0 1430
11
/2 (38.1) 21
/4 3390 345.0 2500
Metric Grade 8.8 Bolts
Bolt Size Hexagon (A/F) Torque Settings
(mm) mm Nm kgf m lbf ft
M5 (5) 8 7 0.7 5
M6 (6) 10 12 1.2 9
M8 (8) 13 28 3.0 21
M10 (10) 17 56 5.7 42
M12 (12) 19 98 10 72
M16 (16) 24 244 25 180
M20 (20) 30 476 48 352
M24 (24) 36 822 84 607
M30 (30) 46 1633 166 1205
M36 (36) 55 2854 291 2105
Rivet Nut Bolts/Screws
Bolt Size Torque Settings (for steel rivet nuts)
(mm) Nm kgf m lbf ft
M3 (3) 1.2 0.12 0.9
M4 (4) 3.0 0.3 2.0
M5 (5) 6.0 0.6 4.5
M6 (6) 10.0 1.0 7.5
M8 (8) 24.0 2.5 18.0
M10 (10) 48.0 4.9 35.5
M12 (12) 82.0 8.4 60.5
Note: All bolts used on JCB machines are high tensile and must not be replaced by bolts of a lesser tensile specification.
*

8 - 1
9803/3610
Section 1
8 - 1
Issue 6*
Sealing and Retaining Compounds
JCB Multi-Gasket A medium strength sealant suitable for all
sizes of gasket flanges, and for hydraulic fittings
of 25-65mm diameter. 4102/1212 50ml
JCB High Strength Threadlocker A high strength locking fluid for use with threaded
components. Gasketing for all sizes of flange where
the strength of the joint is important. 4102/0551 50ml
JCB Retainer (High Strength) For all retaining parts which are unlikely to be
dismantled. 4101/0651 50ml
JCB Threadlocker and Sealer A high strength locking fluid for sealing 4101/0250 10ml
and retaining nuts, bolts, and screws up to 4101/0251 50ml
50mm diameter, and for hydraulic fittings up
to 25mm diameter.
Threadseal A medium strength thread sealing compound. 4102/1951 50ml
Threadlocker A locking fluid for use on threads larger than
50mm dia. 4101/0451 50ml
Activator A cleaning primer which speeds the curing rate 4104/0251 (1ltr)
of anaerobic products. 4104/0253 Bottle
(200ml)
Cleaner / Degreaser For degreasing components prior to use of
anaerobic adhesives and sealants. 4104/1557 400ml
Direct Glazing Kit For one pane of glass, comprises items
marked † below plus applicator nozzle etc. 993/55700
† Ultra Fast Adhesive For direct glazing 4103/2109 310 ml
† Active Wipe 205 For direct glazing 4104/1206 30 ml
4104/1203 250 g
† Black Primer 206J For direct glazing 4201/4906 30 ml
Clear Silicone Sealant To seal butt jointed glass 4102/0933
Black Polyurethane Sealant To finish exposed edges of laminated glass 4102/2309 310 ml
JCB Cleaner & Degreaser For degreasing components prior to use of anaerobic
adhesives and sealants. 4104/1538 Aerosol
*

Contents Page No.
Safety Notices 1 - 1
General safety 2 - 1
Operating safety 2 - 2
Maintenance safety 2 - 3
Lubricants - Health and Safety 3 - 1
i
Care & Safety
9803/3610
i
Issue 1
Section 2 Section 2

1 - 1
Safety Notices
In this handbook and on the machine there are safety notices. Each notice starts with a
signal word. The signal word meanings are given below.
! DANGER
Denotes an extreme hazard exists. If proper precautions are not taken it is highly
probable that the operator (or others) could be killed or seriously injured.
INT-1-2-1
! WARNING
Denotes a hazard exists. If proper precautions are not taken, the operator (or others)
could be killed or seriously injured.
INT-1-2-2
! CAUTION
Denotes a reminder of safety practices. Failure to follow these safety practices could
result in injury to the operator (or others) and possible damage to the machine.
INT-1-2-3
Care & Safety
9803/3610
1 - 1
Issue 1
Section 2 Section 2

2 - 1
All construction and agricultural equipment can be
hazardous. When a JCB machine is correctly operated and
properly maintained, it is a safe machine to work with. But
when it is carelessly operated or poorly maintained it can
become a danger to you (the operator) and others.
Do not work with the machine until you are sure that you can
control it.
Do not start any job until you are sure that you and those
around you will be safe.
If you are unsure of anything, about the machine or the job,
ask someone who knows. Do not assume anything.
Remember
BE CAREFUL
BE ALERT
BE SAFE
GEN-1-6
General Safety
!
! WARNING
Decals
You can be injured if you do not obey the decal safety
instructions. Keep decals clean. Replace unreadable or
missing decals with new ones before operating the machine.
Make sure replacement parts include warning decals where
necessary.
INT-1-3-4
!
! WARNING
Clothing
You can be injured if you do not wear proper clothing. Loose
clothing can get caught in the machinery. Wear protective
clothing to suit the job. Examples of protective clothing are:
a hard hat, safety shoes, safety glasses, a well-fitting overall,
ear-protectors and industrial gloves. Keep cuffs fastened.
Do not wear a necktie or scarf. Keep long hair restrained.
INT-1-3-6
As well as the warnings in this chapter, specific warnings are
given throughout the book. This section is designed to give
a safety code for use of the machine generally and for
maintenance practices.
!
! WARNING
Care and Alertness
All the time you are working with or on the machine, take
care and stay alert. Always be careful. Always be alert for
hazards.
INT-1-3-5
!
! WARNING
Raised Boom
A raised boom can fall or be lowered accidentally. Do not
walk under a raised boom which is not fitted with a safety
strut, or you could be injured.
5-1-1-1
!
! WARNING
Lifting Equipment
You can be injured if you use faulty lifting equipment. Make
sure that lifting equipment is in good condition. Make sure
that lifting tackle complies with all local regulations and is
suitable for the job. Make sure the lifting equipment is strong
enough for the job.
INT-1-3-7
Care & Safety
9803/3610
2 - 1
Issue 1
Section 2 Section 2

2 - 2
Operating Safety
! WARNING
Controls
You or others can be killed or seriously injured if you operate
the control levers from outside the cab. Operate the control
levers only when you are correctly seated inside the cab.
INT-2-1-3
! WARNING
Entering/Leaving
Always face the machine when entering and leaving the cab.
Use the step(s) and handrails. Make sure the step(s),
handrails and your boot soles are clean and dry. Do not
jump from the machine. Do not use the machine controls as
handholds, use the handrails.
INT-2-1-7
! WARNING
Passengers
Passengers in or on the machine can cause accidents. The
JCB Loadall is a one man machine. Do not carry
passengers.
INT-2-2-2
! WARNING
Exhaust Gases
Breathing the machine exhaust gases can harm and
possibly kill you. Do not operate the machine in closed
spaces without making sure there is good ventilation. If
possible, fit an exhaust extension. If you begin to feel
drowsy, stop the machine at once. Get out of the cab into
fresh air.
INT-2-1-10
! WARNING
Ramps and Trailers
Water, mud, ice, grease and oil on ramps or trailers can
cause serious accidents. Make sure ramps and trailers are
clean before driving onto them. Use extreme caution when
driving onto ramps and trailers.
INT-2-2-6
! WARNING
Fires
If your machine is equipped with a fire extinguisher, make
sure it is checked regularly. Keep it in the operator's cab
until you need to use it.
Do not use water to put out a machine fire, you could spread
an oil fire or get a shock from an electrical fire. Use carbon
dioxide, dry chemical or foam extinguishers. Contact your
nearest fire department as quickly as possible. Firefighters
should use self-contained breathing apparatus
INT-3-2-7/1
! WARNING
Engine Panels
The engine has exposed rotating parts. Do not open the
bonnet while the engine is running. Keep other people clear
while you raise the engine cover using the boom. Do not use
the machine with the bonnet open or the cover raised.
5-1-2-1
! WARNING
ROPS/FOPS Structure
The machine is fitted with a Roll Over Protection Structure
(ROPS) and a Falling Objects Protection Structure (FOPS).
You could be killed or seriously injured if you operate the
machine with a damaged or missing ROPS/FOPS. If the
ROPS/FOPS has been in an accident, do not use the
machine until the structure has been renewed. Modifications
and repairs that are not approved by the manufacturer may
be dangerous and will invalidate the ROPS/FOPS
certification
INT-2-1-9/3
! WARNING
Reversing
Reversing at high speed can cause accidents. Do not
reverse in third or fourth (if fitted) gear with full throttle.
Always drive at a safe speed to suit working conditions.
INT-2-2-9
! WARNING
Communications
Bad communications can cause accidents. Keep people
around you informed of what you will be doing. If you will be
working with other people, make sure any hand signals that
may be used are understood by everybody. Work sites can
be noisy, do not rely on spoken commands.
INT-2-2-3
! WARNING
Sparks
Explosions and fire can be caused by sparks from the
exhaust or the electrical system. Do not use the machine in
closed areas where there is flammable material, vapour or
dust.
INT-2-2-10
! CAUTION
Overhead Clearance
A raised boom can strike overhead objects. Always check
for overhead clearance before raising the boom.
5-1-5-1
Care & Safety
9803/3610
2 - 2
Issue 1
Section 2 Section 2

2 - 3
Maintenance Safety
!
! WARNING
Metal Splinters
You can be injured by flying metal splinters when driving
metal pins in or out. Use a soft-faced hammer or drift to
remove and fit metal pins. Always wear safety glasses.
INT-3-1-3
!
! WARNING
Boom Safety Strut
A raised boom can drop suddenly and cause serious injury.
Before working under a raised boom, fit the boom safety
strut. See Boom Safety Strut (MAINTENANCE section).
5-1-5-7
!
! WARNING
Communications
Bad communictions can cause accidents. If two or more
people are working on the machine, make sure each is
aware of what the others are doing. Before starting the
engine make sure the others are clear of danger areas;
examples of danger areas are: the rotating blades and belt
on the engine, the attachments and linkages, and anywhere
beneath or behind the machine. People can be killed or
injured if these precautions are not taken.
INT-3-1-5
!
! WARNING
Asbestos
Asbestos dust can damage your lungs. Some engine
gaskets contain asbestos. Do not dismantle the engine or
exhaust system; get these jobs done by a qualified person
who has a copy of the engine service manual.
5-1-6-1
!
! WARNING
Battery Gases
Batteries give off explosive gases. Keep flames and sparks
away from the battery. Do not smoke close to the battery.
Make sure there is good ventilation in closed areas where
batteries are being used or charged. Do not check the
battery charge by shorting the terminals with metal; use a
hydrometer or voltmeter.
INT-3-1-8
!
! DANGER
Electrolyte
Battery electrolyte is toxic and corrosive. Do not breathe the
gases given off by the battery. Keep the electrolyte away
from your clothes, skin, mouth and eyes. Wear safety
glasses. See Battery (MAINTENANCE section) for First Aid
treatments.
INT-3-2-1/2
!
! WARNING
Jacking
A machine can roll off jacks and crush you unless the wheels
have been chocked. Always chock the wheels at the
opposite end of the machine that is to be jacked. Do not
work underneath a machine supported only by jacks. Always
support a jacked-up machine on axle stands before working
underneath it.
INT-3-2-8
!
! WARNING
Diesel Fuel
Diesel fuel is flammable; keep naked flames away from the
machine. Do not smoke while refuelling the machine or
working on the engine. Do not refuel with the engine
running. There could be a fire and injury if you do not follow
these precautions.
INT-3-2-2
!
! WARNING
Hot Coolant
The cooling system is pressurised when the engine is hot.
Hot coolant can spray out when you remove the radiator
cap. Let the system cool before removing the radiator cap.
To remove the cap; turn it to the first notch and let the
system pressure escape, then remove the cap.
INT-3-2-9
!
! WARNING
Petrol
Do not use petrol in this machine. Do not mix petrol with the
diesel fuel; in storage tanks the petrol will rise to the top and
form flammable vapours.
INT-3-1-6
!
! WARNING
Oil
Oil is toxic. If you swallow any oil, do not induce vomiting,
seek medical advice. Used engine oil contains harmful
contaminants which can cause skin cancer. Do not handle
used engine oil more than necessary. Always use barrier
cream or wear gloves to prevent skin contact. Wash skin
contaminated with oil thoroughly in warm soapy water. Do
not use petrol, diesel fuel or paraffin to clean your skin.
INT-3-2-3
!
! WARNING
Electrical Circuits
Understand the electrical circuit before connecting or
disconnecting an electrical component. A wrong connection
can cause injury and/or damage.
INT-3-1-4
Care & Safety
9803/3610
2 - 3
Issue 1
Section 2 Section 2

2 - 4
!
! WARNING
Hydraulic Fluid
Fine jets of hydraulic fluid at high pressure can penetrate the
skin. Do not use your fingers to check for hydraulic fluid
leaks. Do not put your face close to suspected leaks. Hold a
piece of cardboard close to suspected leaks and then
inspect the cardboard for signs of hydraulic fluid. If hydraulic
fluid penetrates your skin, get medical help immediately.
INT-3-1-10/1
!
! WARNING
Hydraulic Pressure
Hydraulic fluid at system pressure can injure you. Before
disconnecting or connecting hydraulic hoses, stop the
engine and operate the controls to release pressure trapped
in the hoses. Make sure the engine cannot be started while
the hoses are open.
INT-3-1-11/1
!
! WARNING
Battery
A battery with frozen electrolyte can explode if it is used or
charged. Do not use a machine with a frozen battery. To
help prevent the battery from freezing, keep the battery fully
charged.
INT-3-1-7
!
! CAUTION
Cleaning
Cleaning metal parts with incorrect solvents can cause
corrosion. Use only recommended cleaning agents and
solvents.
INT-3-2-11
!
! CAUTION
'O' rings, Seals and Gaskets
Badly fitted, damaged or rotted 'O' rings, seals and gaskets
can cause leakages and possible accidents. Renew
whenever disturbed unless otherwise instructed. Do not use
Triochloroethane or paint thinners near 'O' rings and seals.
INT-3-2-12
!
! WARNING
Soft Ground
A machine can sink into soft ground. Never work under a
machine on soft ground.
INT-3-2-4
!
! WARNING
Hydraulic Hoses
Damaged hoses can cause fatal accidents. Inspect the
hoses regularly for:
Damaged end fittings
Chafed outer covers
Ballooned outer covers
Kinked or crushed hoses
Embedded armouring in outer covers
Displaced end fittings.
INT-3-3-2
!
! WARNING
Battery Terminals
The machine is negatively earthed. Always connect the
negative pole of the battery to earth.
When connecting the battery, connect the earth (-) lead last.
When disconnecting the battery, disconnect the earth (-)
lead first.
INT-3-1-9
!
! WARNING
Fluoroelastomeric Materials
Certain seals and gaskets (e.g. crankshaft oil seal) on JCB
machines contain fluoroelastomeric materials such as Viton,
Fluorel and Technoflon. Fluoroelastomeric materials
subjected to high temperatures can produce highly corrosive
hydrofluoric acid. THIS ACID CAN SEVERELY BURN.
New fluoroelastomeric components at ambient temperature
require no special safety precautions.
Used fluoroelastomeric components whose temperatures
have not exceeded 300°C require no special safety
precautions. If evidence of decomposition (e.g. charring) is
found, refer to the next paragraph for safety instructions DO
NOT TOUCH COMPONENT OR SURROUNDING AREA.
Used fluoroelastomeric components subjected to
temperatures greater than 300°C (e.g. engine fire) must be
treated using the following safety procedure. Make sure that
heavy duty gloves and special safety glasses are worn:
1 Ensure that components have cooled then remove and
place material into plastic bags.
2 Thoroughly wash contaminated area with 10% calcium
hydroxide or other suitable alkali solution, if necessary
use wire wool to remove burnt remains.
3 Thoroughly wash contaminated area with detergent and
water.
4 Contain all removed material, gloves etc. used in this
operation in sealed plastic bags and dispose of in
accordance with Local Authority Regulations.
DO NOT BURN FLUOROELASTOMERIC MATERIALS.
If contamination of skin or eyes occurs, wash the affected
area with a continuous supply of clean water or with calcium
hydroxide solution for 15-60 minutes. Get medical attention
immediately.
INT - 3 - 3 - 5/1
Section 2 Care & Safety
9803/3610
Section 2
2 - 4
Issue 2*
*

3 - 1
Hygiene
JCB lubricants are not a health risk when used properly for
their intended purposes.
However, excessive or prolonged skin contact can remove
the natural fats from your skin, causing dryness and
irritation.
Low viscosity oils are more likely to do this, so take special
care when handling used oils, which might be diluted with
fuel contamination.
Whenever you are handling oil products you should maintain
good standards of care and personal and plant hygiene. For
details of these precautions we advise you to read the
relevant publications issued by your local health authority,
plus the following.
Storage
Always keep lubricants out of the reach of children.
Never store lubricants in open or unlabelled containers.
Waste Disposal
All waste products should be disposed of in accordance
with all the relevant regulations.
The collection and disposal of used engine oil should be in
accordance with any local regulations. Never pour used
engine oil into sewers, drains or on the ground.
Handling
New Oil
There are no special precautions needed for the handling or
use of new oil, beside the normal care and hygiene
practices.
Used Oil
Used engine crankcase lubricants contain harmful
contaminants.
Here are precautions to protect your health when handling
used engine oil:
1 Avoid prolonged, excessive or repeated skin contact
with used engine oils.
2 Apply a barrier cream to the skin before handling used
engine oil.
3 Note the following when removing engine oil from skin:
a Wash your skin thoroughly with soap and water.
b Using a nail brush will help.
c Use special hand cleansers to help clean dirty
hands.
d Never use petrol, diesel fuel, or paraffin for
washing.
e Avoid skin contact with oil soaked clothing.
f Don't keep oily rags in pockets.
g Wash dirty clothing before re-use.
h Throw away oil-soaked shoes.
First Aid - Oil
Eyes
In the case of eye contact, flush with water for 15 minutes. If
irritation persists, get medical attention.
Swallowing
If oil is swallowed do not induce vomiting. Get medical
advice.
Skin
In the case of excessive skin contact, wash with soap and
water.
Spillage
Absorb on sand or a locally approved brand of absorbent
granules. Scrape up and remove to a chemical disposal
area.
Fires
Extinguish with carbon dioxide, dry chemical or foam
extinguishers. Do not use water. Fire-fighters should use
self-contained breathing apparatus.
Care & Safety
9803/3610
3 - 1
Issue 1
Lubricants - Health and Safety
Section 2 Section 2

i
Routine Maintenance
9803/3610
i
Issue 6*
Section 3 Section 3
Contents Page No.
Lubricants and Capacities
- New Engines 1 - 1
- Lubrication Charts 1 - 1
- 520-55 (Rear Steer) Machines 1 - 2
- 520-55 AWS Machines
(Type AA and AB Engine Builds) 1 - 3
- 526-55, 526, 526S Machines
(AA and AB Engine Builds) 1 - 4
- 520-55 AWS Machines - Low Emission Engines
(Type AR and AK Engine Builds) 1 - 5
- 526-55, 526 & 526S Machines Low Emission
Engines (Type AR and AK Engine Builds) 1 - 6
- 526-55, 526 & 526S Machines Low Emission
Engines (Type RE and RG Engine Builds) 1 - 7
Machine Safety 2 - 1
Service Schedules 3 - 1
Grease
- 50 Hours 4 - 1
- 500 Hours 4 - 2
- 1000 Hours 4 - 4
Oiling 5 - 1
Tyres and Wheels 6 - 1
Foot Brake (520-55 machines only) 7 - 1
Engine Air Filter
- Cleaning the Pre-Cleaner 7 - 1
- Changing the Outer Element 7 - 2
- Changing the Inner Element 7 - 3
Engine Oil and Filter
- Checking the Oil level 8 - 1
- Changing the Oil and Filter 8 - 1
Engine Cooling System
- Checking the Coolant Level 9 - 1
- Coolant Mixtures 9 - 1
- Changing the Coolant 9 - 2
Cab Heater Filter 10 - 1
*

Contents Page No.
Fuel System
- Fuel Types 11 - 1
- Filling the Tank 11 - 2
- Cleaning the Lift Pump Gauze 11 - 2
- Draining the Filter (up to S/N 280299) 11 - 3
- Changing the Filter Element (up to S/N 280299) 11 - 3
- Draining the Filter (from S/N 280300) 11 - 4
- Changing the Filter Element
“A” series engines (from S/N 280300) 11 - 4
“R” series engines 11 - 5
- Draining the Sediment Bowl 11 - 6
- Cleaning the Sediment Bowl 11 - 6
- Bleed the System 11 - 8
- Fuel Pipes- Removal and Replacement 11 - 11
Fire Extinguisher 12 - 1
Syncro Shuttle Transmission
- Checking the Oil Level 12 - 1
- Changing the Oil and Filter 12 - 2
Front and Rear Axle
- Checking the Axle Oil Level 13 - 1
- Changing the Axle Oil 13 - 1
Front and Rear Hub
- Checking the Hub Oil Levels 14 - 1
- Oil Immersed Brakes 14 - 1
- Changing the Hub Oil 14 - 1
Hydraulic System
- Checking the Fluid Level 15 - 1
- Changing the Filter Element 15 - 1
Hose Burst Protection Valves
- Checking the Hose Burst Protection Valves 16 - 1
Battery 17 - 1
9803/3610
Section 3
Issue 3*
Routine Maintenance
ii ii
Section 3

1 - 1
Section 3 Routine Maintenance
9803/3610
Section 3
1 - 1
Issue 5*
New Engines
New engines DO NOT require a running-in period. The engine/machine should be used in a normal work cycle immediately;
glazing of the piston cylinder bores, resulting in excessive oil consumption, could occur if the engine is gently run-in. Under no
circumstances should the engine be allowed to idle for extended periods; (e.g. warming up without load). Engines of new
machines are filled at the factory with JCB 10W/30 Multigrade oil. This oil should be drained after the first 100 hours operation
and the engine filled with the appropriate recommended grade as shown in the lubrication chart. JCB 10W/30 Multigrade
should also be used for the first 100 hours operation whenever a new or reconditioned engine is fitted to the machine. After
the first 100 hours operation, it is essential that the 10W/30 oil is replaced by the lubricant recommended in the lubrication
charts.
Lubrication Charts
Lubrication charts are included on the following pages for all machine models. Note that there are some differences in
specifications for machines operating in North America. Be sure you identify the machine and its lubricant requirements
correctly.
Note 1: This is nominal machine capacity. The total hydraulic system capacity depends on the equipment being used. Fill
and check with all rams closed. Watch level sight glass when filling.
Note 2: If JCB Special MPL Grease is used, all 50 hour greasing operations must be carried out at TEN (10) HOUR
intervals. All 500 hour greasing operations must be carried out at FIFTY (50) HOUR intervals
Lubricants & Capacities

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520-55 RS (Rear Steer) Machines
ITEM CAPACITY FLUID/LUBRICANT INTERNATIONAL
Litres UK Gal US Gal SPECIFICATION
Fuel Tank
Up to serial No. 279000 120 26.4 31.7 Diesel Oil (See Types of Fuel) ASTM D975-66T Nos. 1D, 2D
From serial No. 279001 160 35.2 42.2
Engine (Oil) 10 2.2 JCB High Performance Engine Oil SAE15W/40
-10 °C to 50 °C (14 °F to 122 °F) API CF4/SG (ACEA E2:B2:A2)
JCB Super Universal SAE10W/30
Agricultural API CD/SF
-15 °C to 30 °C (5 °F to 86 °F)
JCB Torque Converter Fluid SAE10W
-18 °C to 0 °C (0 °F to 32 °F) API CD/SF
NORTH AMERICA
2.6 JCB 15W/40 Engine Oil SAE 15W/40
14°F to 122°F (-10°C to 50°C) API CF4/SG
JCB 10W Engine Oil SAE 10W
-4°F to 50° F (-20°C to 10°C) API CF4/SG
Engine (Coolant) 20 4.4 JCB Four Seasons Antifreeze ASTM D3306-74
55% Antifreeze 11 2.4 And Summer Coolant
Starts to freeze -36 °C (-33 °F)
NORTH AMERICA
5.3 Permanent Antifreeze ASTM D3306-74
2.9 Starts to freeze -33 °F (-36 °C)
Syncro Shuttle 17 3.7 4.5 JCB High Performance JCB: 4000/0900
Transmission Transmission Fluid Friction modified oils MUST NOT
be used (eg Dexron ATF type).
Front Axle JCB High performance JCB: 4000/2200
Housing 9.7 2.1 2.5 Gear Oil Plus MUST be suitable for use with
Hubs (x2) 0.6 0.1 0.16 oil immersed brakes and limited
slip differentials (LSD).
Rear Axle
Housing 5.0 1.1 1.3
Hubs (x2) 1.5 0.3 0.4
Hydraulic Tank (1) JCB High Performance ISO VG46
Up to serial No. 279000 100 22.0 Hydraulic Fluid 46
From serial No. 279001 110 24.2 (Above 38 °C, 100 °F)
JCB High Performance ISO VG32
Hydraulic Fluid 32
(Below 38 °C, 100 °F)
JCB Light Hydraulic Fluid ISO VG15
Up to serial No. 279000 26.4 NORTH AMERICA (All Machines)
From serial No. 279001 29.0 JCB Hydraulic Fluid ISO VG46
Grease Points (2) JCB HP Grease Lithium complex NLGI No. 2
constsituency including extreme
pressure additives.
JCB Special MPL-EP Grease Lithium based NLGI No. 2
pressure additives.
Wear Pad Runways JCB Waxoyl
Boom Hoses JCB Special Slide Lubricant
1 - 2
9803/3610
Section 3
1 - 2
Issue 4*

1 - 3
9803/3610
Section 3
1 - 3
Issue 4*
520-55 AWS Machines (Type AA and AB Engine Builds)
Fuel Tank
From serial No. 279001 160 35.2 42.2
JCB Super Universal SAE10W/30
Agricultural API CD/SF
-15 °C to 30 °C (5 °F to 86 °F)
NORTH AMERICA
NORTH AMERICA
5.3 Permanent Antifreeze ASTM D3306-74
Syncro Shuttle 17 3.7 4.5 JCB High Performance JCB: 4000/0900
Front Axle JCB High performance JCB: 4000/2200
Housing 5.5 1.2 1.4 Gear Oil Plus MUST be suitable for use with
Hubs (x2) 1.5 0.3 0.4 oil immersed brakes and limited
Rear Axle
Housing 5.0 1.1 1.3
Hubs (x2) 1.5 0.3 0.4
Hydraulic Fluid 32
(Below 38 °C, 100 °F)
pressure additives.
pressure additives.

1 - 4
9803/3610
Section 3
1 - 4
Issue 3*
526-55, 526 & 526S Machines (AA and AB Engine Builds)
Fuel Tank
From serial No. 279001 160 35.2 42.2
JCB Super Universal Agricultural SAE10W/30
NORTH AMERICA
NORTH AMERICA ASTM D3306-74
5.3 Permanent Antifreeze
Syncro Shuttle 17 3.7 4.5 JCB High Performance JCB 4000/0900
Front Axle JCB High performance JCB 4000/2200
Housing 9 1.98 2.4 Gear Oil Plus MUST be suitable for use with
Hubs (x2) 2 0.44 0.5 oil immersed brakes and limited
Rear Axle
Housing 8.4 1.85 2.2
Hubs (x2) 2 0.44 0.5
Brake System JCB Light Hydraulic Fluid ISO VG15
From serial No. 280300 Do not use ordinary brake fluid
Hydraulic Fluid 32
(Below 38 °C, 100 °F)
pressure additives.
pressure additives.

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