Claas TARGO K50 Operating instructions

CLCL
CLCL
CLAA
AA
AAS TAS T
AS TAS T
AS TARGO K50K60K70ARGO K50K60K70
ARGO K50K60K70ARGO K50K60K70
ARGO K50K60K70
REPREP
REPREP
REPAIRMANUALAIRMANUAL
AIRMANUALAIRMANUAL
AIRMANUAL
AXLESANDSTEERING
ENGINE
TRANSMISSION
BOOM
CHASSIS
TECHNICALDATA

The machines in this handbook are designed essentially for agricultural and associated applications. This is
their intended use.
Any modifications made to the machine without prior written approval from CLAAS or if the machine is used in
any way contrary to the intended use or if the machine is not properly driven or maintained then the Company
will not accept any liability whatsoever for any damage or injury (whether direct or consequential).
The method of operation and maintenance specified in this handbook should be strictly adhered to.
For your parts requirements, it is essential that only genuine CLAAS parts are fitted.Any resultant damage
from non-genuine parts will invalidate your machine warranty.
CLAAS operates a policy of continuous improvement to its products and reserve the right to change specifica-
tions and equipment without notice. Therefore some information within this handbook may differ from your
machine.
This manual is designed to service machines:
from Serial No. 51200011
up to Serial No. 51200727.
from Serial No. K5D00100
from Serial No. K6D00100
from Serial No. K7D00100

CONTENTS
INTRODUCTION
General
Machineidentification
Health and Safety
SAFETYWARNINGS
SECTION 1
AXLESANDSTEERING
Axles 1.1
Description 1.1
FrontAxle 1.1
Removal 1.1
Installation 1.2
RearAxle 1.3
Removal 1.3
Installation 1.3
Servicing 1.4
Dismantlingandassembly (General) 1.4
Dismantling 1.5
Steeringcylinder 1.5
Removal 1.5
Cylinderoverhaul 1.5
Epicyclic reduction gear 1.6
Wheelhub 1.7
Axlebeam trumpetand brakegroup 1.9
Differentialgroup 1.13
Assembly 1.15
Piniongroup 1.15
Differentialgroup 1.19
Brakepack and differentialhousing 1.20
Genericinformation 1.25
Axlebeam trumpetand brakegroup 1.27
Wheelhub 1.29
Epicyclic reduction gear 1.31
Steeringcylinder 1.32
Special tools 1.33
Toe-in adjustment 1.39
Steering angleadjustment 1.40
Rearaxlepivots 1.41
Removal 1.41
Installation 1.41
Testing afterinstallation 1.42
Troubleshooting 1.43
Operatingproblems 1.43
Axleproblems 1.44
Axlenoise problemsand diagnosis 1.45
Steering 1.46
Description 1.46
Operation 1.46
Checking the Steering System 1.49
SteeringCylinder 1.49
OSFFSteeringUnit 1.49
Servicing 1.49
Steering ValveAssembly 1.50
Removal 1.50
Installation 1.50
Dismantling 1.51
Assembly 1.51

CONTENTS
SECTION 1 (continued)
Brakes system - bleeding 1.52
Dissipation(dumping)of hydraulicpressure 1.53
To dumpbrake systempressure 1.53
To dump a system pressure 1.53
Hydrauliclevel 1.54
Check 1.54
SECTION 2
ENGINE
Description 2.1
Engine Data 2.1
Removalandinstallation 2.2
General 2.2
Removal(completewithpod) 2.2
Installation 2.4
Testing 2.4
Removal(podlefton machine) 2.5
Installation 2.7
Testing 2.7
SECTION 3
TRANSMISSION
Description 3.1
Gearselection withAPC 3.1
Gearselection withoutAPC(option) 3.1
Technicaldata 3.2
Gearboxlayout (illustration) 3.3
Gearboxtype plate(illustration) 3.4
Speedsensor 3.5
Speedsensorrotation 3.6
Sensor test 3.6
Speedsensorto moduleconnection 3.7
Arrangementofsolenoids 3.8
Solenoidsto module wiring 3.9
APCgear selectormodule 3.10
Displaymenus 3.11
Displaynormal 3.12
Gearselection 3.12
Failurecodes 3.14
Display 3.14
Display– Gearboxspeed signal 3.15
Display– Machinespeed 3.16
Displayinputs 3.17
Testing display inputs 3.18
Cableconnections from levertoAPC 3.19
Pinlocationfrom lever(Hobbs) 3.19
APC pin layout 3.20
Testing output fromAPC 3.21
Kick-down 3.22
Automatic gear change 3.22
OptionwithoutAPC 3.23
Controllever(Britax) 3.23
Pinlayout forcontrol lever 3.24
Controllever tosolenoid circuit 3.25
Solenoidswitching pairs 3.26
4/3gearbox 3.26
3/3gearbox 3.26

CONTENTS
SECTION 3 (continued)
Gearboxpowerflow 3.27
Gear and clutch layout 3.28
Transmissionclutches 3.29
Function 3.30
PowershiftgearboxT12000 3.31
Solenoid/gearselection tables 3.32
Tablefor6/3 gearbox 3.32
Tablefor5/3 gearbox 3.32
Tablefor4/2 gearbox 3.33
Gearboxhydraulic selectionplans 3.34
Neutral(schematic) 3.35
1stgear (schematic) 3.36
1stgear (illustration) 3.37
2ndgear(schematic) 3.38
2ndgear (illustration) 3.39
3rdgear (schematic) 3.40
3rdgear(illustration) 3.41
4thgear(schematic) 3.42
4thgear (illustration) 3.43
5thgear(schematic) 3.44
5thgear (illustration) 3.45
6thgear(schematic) 3.46
6thgear (illustration) 3.47
Reversegear(schematic) 3.48
Reversegear(illustration) 3.49
Table forgearsR3 andR5 3.50
Gearboxpump 3.50
Accumulatordampingvalves 3.50
Test ports(illustration) 3.51
Test pressures 3.52
RemovalandInstallation 3.53
Removalcompletewithengine 3.53
Removalfromengine 3.53
Installation 3.53
Dismantling– Transmission 3.54
Dismantling – low 1st clutch 3.63
Dismantling – 2nd clutch 3.66
Assembly – low 1st clutch 3.69
Assembly – 2nd clutch 3.73
Dismantling – 4th high clutch 3.77
Dismantling – 3rd clutch 3.79
Assembly – 4th high clutch 3.82
Assembly – 3rd clutch 3.86
Dismantling– reverse clutch 3.89
Dismantling– forward clutch 3.91
Assembly – forward clutch 3.93
Assembly – reverse clutch 3.97
Dismantling– regulatorvalve 3.100
Assembly–regulatorvalve 3.100
Dismantling– dual modulatingvalve 3.101
Assembly–dual modulatingvalve 3.101
Dismantling– spacerplate 3.103
Assembly – spacer plate 3.107
Assembly– frontoutput flange 3.110
Assembly– converterhousing assembly 3.112
Assembly– converter housing 3.114
Assembly – transmission 3.116
Assembly – electric control 3.122
Assembly – transmission 3.123

CONTENTS
SECTION 3 (continued)
Troubleshooting 3.127
Transmission 3.127
Procedures 3.128
Stall Test 3.128
Transmissionpressure checks 3.128
Mechanical and electrical checks 3.128
Hydraulic checks 3.129
Troubleshootingguide 3.130
Lowclutch pressure 3.130
Lowchargingpump output 3.130
Overheating 3.130
Noisyconverter 3.130
Lackofpower 3.130
Checkports - front/rearview (illustration) 3.131
Checkports -left/right view (illustration) 3.132
Checkports -top view(illustration) 3.133
Standard6-speedtransmission(illustration) 3.134
Speed sensor - stand alone check 3.135
SECTION 4
BOOM
DescriptionandOperation 4.1
Description 4.1
Operation 4.2
Maintenance 4.3
Boom 4.3
Removal 4.3
Installation 4.4
Hydrauliccylinders 4.5
Crowdcylinder 4.5
Compensatorcylinder 4.5
Liftcylinder 4.5
Extensioncylinder 4.5
Boom tray cassette 4.6
Removal 4.6
Installation 4.8
Dismantling 4.8
Assembly 4.8
Innerboom 4.9
Removal 4.9
Installation 4.9
Boomwearpads 4.10
General 4.10
Replacementofouter boomwearpads (front) 4.10
Replacementof outer boomwear pads (side) 4.12
Replacementofinner boomwearpads(rear) 4.13
SECTION 5
CHASSIS
Chassis 5.1
Description 5.1
Operatorscab 5.2
Removal 5.2
Installation 5.3
Fuel tank 5.5
Removal 5.5
Installation 5.6
Heaterandair conditioning 5.7
Description 5.7

CONTENTS
SECTION 5 (continued)
Blowermotor 5.7
Removal 5.7
Installation 5.8
Heatercoil 5.9
Removal 5.9
Installation 5.9
Airconditioningevaporator coil 5.10
Removal 5.10
Installation 5.11
Receiver-drierassembly 5.12
Removal 5.12
Installation 5.13
Airconditioning condensercoil 5.13
Removal 5.13
Installation 5.13
Axial fan and relay 5.15
Removal 5.15
Installation 5.15
Compressor(up to MachineS/No.51200471 only) 5.17
Removal 5.17
Installation 5.17
Compressor(fromMachineS/No.51200472 only) 5.19
Removal 5.19
Installation 5.19
SECTION 6
TECHNICALDATA
Dimensions 6.1
Performance 6.2
Machinespeed (km/hr)for 106 hp 6.2
Carriage 6.3
Cycle time 6.3
Engine 6.4
Cooling 6.4
Transmission 6.4
Tyres 6.4
Hydraulics 6.5
Electrics 6.5
Capacities 6.5

INTRODUCTION
General
The contents of this Repair Manual, although correct at the time of publication, may be subject to alteration by
the manufacturer without notice.
This manual assumes that maintenance personnel have a sound knowledge of workshop practices and
safety procedures associated with the repairs of this type of machine. This manual is designed to assist with
the more specialised information required for removal and strip-down of major components.
It is recommended that the relevant part of this Repair Manual is studied carefully before proceeding with any
maintenance.
Machine identification
To make sure that the correct parts are obtained, always quote the machine Serial Number when ordering
parts.
Health and Safety
To prevent injury to personnel and damage to equipment and machinery, care must be taken to operate in a
safe manner. Read the Safety Warnings that follow and always work in a safe manner and obey the relevant
Warnings.
Throughout this manual and on the machine there are safety notes. Each note starts with a single word.The
meaning of these single words is as follows:
Identifies a hazard exists. If proper precautions are not taken, it is highly probable that the
operator (or others) could be killed or seriously injured.
Identifies a reminder of safety practices. Failure to observe these safety practices could result
in injury to the operator (or others) or damage to the machine.
In general these notes are used to indicate that the procedures being described in the manual must be
followed to avoid serious injury or death to yourself or others. The notes are also used to protect the machine
from unsafe maintenance practices.

SAFETY WARNINGS
Always wear correct fitting protective clothing. Loose or baggy clothing can be extremely
dangerous when operating or maintaining a machine.
Where possible, only work on or close to engines or machinery when they are stopped. If this
is not practical, remember to keep tools, test equipment and all parts of your body well away
from moving parts.
Avoid contact with exhaust pipes and exhaust manifolds when the engine is running; these
can be very hot.
Many liquids used on this machine are harmful if taken internally or splashed into the eyes. In
the event of accidentally swallowing oil, diesel fuel, anti-freeze, battery acid etc., DO NOT
induce vomiting, but OBTAIN QUALIFIED MEDICAL ASSISTANCE IMMEDIATELY.
Always obtain advice before mixing oils; some are incompatible.
Never run an engine in an enclosed space unless an exhaust extraction system is used.
Always disconnect battery cables before working on the electrical system to prevent injury
caused by electric shock.
When it is necessary to work on the electrical system with power on, for fault diagnosis,
always have a safety man in attendance
Any dust found on the machine or produced during work on the machine should be removed
by extraction, not by blowing. Dust waste should be dampened, placed in a sealed container
and marked for safe disposal.
Always dump pressure from the hydraulic system before carrying out any maintenance or
adjustment (refer to Hydraulic Repair Manual).
Never leave the machine unattended with pressure in the system.
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. If hydraulic fluid
penetrates your skin OBTAIN QUALIFIED MEDICAL ASSISTANCE IMMEDIATELY.
Never allow unqualified personnel to attempt to remove or replace any part of the machine.
Always use the correct lifting equipment to remove large or heavy components.
Never attempt to lift or hold up the machine using the lash-down points.

SECTION 1
AXLES AND STEERING

AXLES & STEERING 1.1
Axles
Description
The front and rear axles are both double reduction by
bevelsetandplanetaryhubreduction gears, bothhave
limited slip differentials. The front axle incorporates a
parking brake.
Steering is available to both axles, depending on the
steering mode selected. The axle hubs are steered
by the operation of a double acting hydraulic cylinder
attached to the axle.
Front axle
Removal
1. Park the machine on firm level ground and set the
wheels straight ahead, in line with the chassis. Fit
chocks to the front and rear of the rear wheels.
2. Raise the boom and fit the boom safety stop.
3. Stop the engine and apply the parking brake.
4. Refer to page 1.53 and dump hydraulic pressure
from the brake systems, then disconnect the
battery.
5. Disconnect the drive shaft from the axle flange
and support clear of axle.
6. Disconnect the inductive magnetic steering
sensor electrical lead.
7. Slacken front axle wheel nuts.
8. Support the chassis at a sufficient height to allow
the wheels to be removed.
9. Support axle with a fork-lift or trolley jacks.
10. Remove front wheels.
11. Disconnect brake pipes (2) and (3) from left and
right brake unit, fit blanks to open pipes and brake
unit connections.
Support the drive shaft clear of the
axle to make sure it is not damaged
during axle removal.
1. Steering pipes
2. Left brake pipes
3. Right brake pipes
12. Disconnect steering pipes (1) from steering
cylinder, fit blanks to open pipes and steering
cylinder connections.
Secure the axle to the fork-lift/trolley
jacks to prevent axle tipping on
removal.
The axle weighs 443 kg, take care
when removing and transporting.
13. Remove the eight attachment bolts/nuts
securing axle to chassis (four each side) and
remove support plates.
14. Lower axle on fork-lift/trolley jacks.
15. Move axle clear of machine and place on a
suitable support.

AXLES & STEERING1.2
Installation
1. Installation is the reverse of the removal
procedure.
2. Torque load components as follows:
Axle to chassis nuts 640 Nm (472 lbf ft.)
Drive shaft bolts 70-85 Nm (52-63 lbf ft.)
Wheel nuts 300 Nm (221 lbf ft.).
3. Check axle and wheel hub oil levels are correct.
4. When the axle has been dismantled and
reassembled, refer to the Axle Assembly section
and test the differential operation.
5. Refer to Page 1.52 and bleed then check brake
function.
6. Start engine, make sure front wheel steering is
selected and operate steering through full range
several times to bleed air from steering system.
7. Test machine operation.

AXLES & STEERING 1.3
REAR AXLE
Removal
1. Park the machine on firm level ground and set the
wheels straight ahead, in line with the chassis. Fit
chocks to the front and rear of the rear wheels.
2. Raise the boom and fit the boom safety stop.
3. Stop the engine and apply the parking brake.
4. Refer to page 1.53 and dump hydraulic pressure
from the brake systems, then disconnect the
battery.
5. Disconnect the drive shaft from the axle flange
and support clear of axle.
6. Disconnect the load sensor electrical lead.
7. Disconnect the inductive magnetic steering
sensor electrical lead.
8. Slacken rear axle wheel nuts.
9. Support the chassis at a sufficient height to allow
the wheels to be removed.
10. Support axle with a fork-lift or trolley jacks.
11. Remove the bolts attaching the axle front
support to the chassis.
12. Remove the bolts attaching the axle rear
support to the chassis.
13. Remove rear wheels.
14. Disconnect brake pipes (2) and (3) from left and
right brake units, fit blanks to open pipes and brake
unit connections.
15. Disconnect steering pipes (1) from steering
cylinder, fit blanks to open pipes and steering
cylinder connections.
Support the drive shaft clear of the
axle to make sure it is not damaged
during axle removal.
Secure the axle to the fork-lift/trolley
jacks to prevent axle tipping on
removal.
The axle weighs 443 kg, take care
when removing and transporting.
1. Steering pipes
2. Right brake pipes
3. Left brake pipes
17. Move axle clear of machine and place on a
suitable support.
Installation
1. Installation is the reverse of the removal
procedure.
2. Torque load components as follows:
Axle to chassis nuts 640 Nm (472 lbf ft.)
Drive shaft bolts 70-85 Nm (52-63 lbf ft.)
Wheel nuts 300 Nm (221 lbf ft.)
Axle support bolts 370 Nm (273 lbf ft.)
3. Check axle and wheel hub oil levels are correct.
4. When the axle has been dismantled and
reassembled, refer to the Axle Assembly section
and test the differential operation.
5. Refer to Page 1.52 and bleed then check brake
function.
6. Start engine, make sure rear wheel steering is
selected and operate steering through full range
several times to bleed air from steering system.
7. Test machine operation.
16. Lower axle on fork-lift/trolley jacks.

AXLES & STEERING1.4
NOTES:
(1) Sealing Compound. Ensure both surfaces
to be sealed are clean, dry and free from grease.
(2) O-ring seals. Lubricate seals before fitting
to prevent twisting when inserting the shaft
(3) Bearings. It is recommended (but not
mandatory) that bearings are heated to 80°C -
90°C before fitting to shaft, or cooling with dry ice
before inserting them into an outer housing.
(4) Shims. Measure shims before use, do not
rely on measurement marked on shim.
(5) Torque loading. Torque load all
components to the recommended figure.
(6) Oil seals. To assist with the correct
installation of oil seals carry out the following:
- Ensure the shaft is clean and not damaged
- Assemble with lip side towards the oil side
- Lubricate seal with oil and fill ¾ of seal
cavity with grease
- Use special tools to install seals, where
available. Do not hammer directly on the
seal
- Do not damage seals while assembling the
shaft.
(7) Special tools. Use the special tools to
dismantle and assemble the axle.
Servicing
Dismantling and assembly (General)
Dispose of used axle oil in
accordance with local regulations.

AXLES & STEERING 1.5
4.Remove both the track rods (1) by loosening the
lock nut (2) and unscrewing track rod from ball joint.
Remove the three cylinder attachment bolts (3) and
hydraulic adapter (4) from steering cylinder (5).
Remove cylinder from axle mounting brackets, if
necessary use a rubber hammer.
Cylinder overhaul
Refer to Hydraulic Manual for cylinder Dismantling
and Assembly.
1. Track rod
2. Nut
3. Bolt
4. Hydraulic adapter
5. Steering cylinder
Removal
1. Remove the inductive magnetic steering sensor,
by loosening the locking clamp screws.
Dismantling
Steering cylinder
2. Loosen the track rod end nut until it covers end of
threaded pin.
3. Use a suitable tool and break the track rod joint.
NOTE: This may damage the nut, use a new nut on
assembly.

AXLES & STEERING1.6
NOTE: This procedure is for the left or right hand
epicyclic reduction gear.
1. Position drain plug (1) at highest position and
loosen, to dissipate any pressure in axle.
2. Rotate planetary carrier (2) until drain plug is at
lowest position, remove drain plug and drain oil into
a suitable container.
3. Remove the planetary carrier retaining screws (3)
and remove carrier from wheel hub (4).
4. Position the planetary carrier on a clean
workbench and check components for wear and
condition.
5. Remove O-ring (10) and check condition.
6. If necessary, replace components in planetary
carrier as follows:
7. Remove the lock rings (5) and washers (6) from
pins (7).
8. Remove planetary gears (8) from pins.
9. Remove the needle roller bearings (9) from the
gears.
NOTE: When a new planetary gear is fitted, it is
recommended that new needle roller bearings are
fitted.
1. Drain plug
2. Planetary carrier
3. Retaining screws
4. Wheel hub
5. Lock ring
6. Washer
7. Pin
8. Planetary gear
9. Needle roller bearings
10. O-ring
Epicyclic reduction gear

AXLES & STEERING 1.7
Wheel hub
NOTE: This procedure is for the left or right hand
wheel hub.
1. Remove the circlip (11) and washers (12 & 13)
from the U/J shaft (14).
2. Remove the hub lock ring gear attachment bolts
(15).
3. Fit at least two of the hub lock ring gear
attachment bolts (15) into the threaded extraction
holes (16) and tighten evenly to push the carrier off
the hub.
4. Remove the hub lock ring gear (17) and the
epicyclic ring gear (18) from the wheel hub (19).
5. Remove the wheel hub from the axle, careful use
of hammers and levers may be necessary.
6. Position the wheel hub on a suitable workbench
and remove the bearing seal (20) with a lever.
7. Remove the inner and outer bearings cups (21)
from the housing using a hammer and drift.
8. Remove the bearing cone (22) from the swivel
housing side of the hub using a suitable extractor.
9. Remove the lock ring (23) securing the hub lock
ring gear (17) to the epicyclic ring gear (18) and
separate the units.
10. Examine the hub lock ring gear (17) and the
epicyclic ring gear (18) for wear. If necessary,
remove the centring bushes (24) of the hub lock ring
gear with a hammer and special tool Part No,
CA715027.
11. Circlip
12. Washer
13. Washer
14. U/J shaft
15. Bolt
16. Threaded hole
17. Hub lock ring gear
18. Epicyclic gear
19. Hub
20. Bearing seal
21. Bearing cups
22. Bearing cone
23. Lock ring
24. Bush

AXLES & STEERING1.8
11. Remove the bolts (25) securing the upper king
pin (26) to the axle beam (27), remove the king pin,
the belleville washers (28) and shim (32).
12. Remove the bolts (25) securing the lower king
pin (26) to the axle beam (27), remove the king pin
and the belleville washers (28).
13. Remove the swivel housing (29) from the axle
beam and position on a suitable workbench.
14. Remove the sealing ring (30) from the swivel
housing.
15. Invert the housing and remove the bush (31)
using a hammer and drift.
25. Bolt
26. King pin
27. Axle beam
28. Belleville washer
29. Swivel housing
30. Sealing ring
31. Bush
32. Shim
The swivel housing is heavy and
must be supported with suitable
equipment before the king pins are
removed.

AXLES & STEERING 1.9
Axle beam trumpet and brake group
NOTE: This procedure is for the left or right hand
axle beam trumpet and brake group.
1. Remove the drive shaft (1) from the axle beam
(2).
NOTE: The removal procedure for sealing ring (3)
will destroy the sealing ring.
2. Remove the sealing ring (3) with a lever and
examine the bush (4) for wear.
NOTE: Only remove bush (4) if worn or damaged,
the removal procedure will destroy the bush.
3. Remove bush (4), if worn or damaged, by
carefully cutting the bush with a chisel before
extraction.
NOTE: The belleville washers (5) and shim (6) may
have been removed during the wheel hub removal
procedure.
4. Remove the belleville washers (5) from the upper
and lower beam housing and the shim (6) from the
upper housing.
5. Using a suitable extractor, remove the upper and
lower bushes (7 & 8) from the axle beam (2).
6. Remove bush (9) from upper and lower king pins
(10).
1. Drive shaft
2. Axle beam
3. Sealing ring
4. Bush
5. Belleville washer
6. Shim
7. Bush
8. Bush
9. Bush
10. King pin

AXLES & STEERING1.10
9. Remove the axle beam retaining screws (13) and
nut from the lower stud. Remove axle beam (2) from
brake pack/differential assembly.
10. Remove O-ring (14) from axle beam.
NOTE: Record the position of the sleeve (17) to aid
assembly.
11. Remove the brake discs (15), fixed discs (16)
and sleeve (17) from the brake pack (12).
12. Remove the two self-adjust bolts (18), belleville
washers (19), bush (20) and belleville washer (21)
from the brake housing.
11. Differential
12. Brake pack
13. Screw
14. O-ring
15. Brake disc
16. Fixed disc
17. Sleeve
18. Bolt
19. Belleville washers
20. Bush
21. Belleville washer
7. Put identification marks on the differential (11),
left/right brake packs (12) and left/right axle beams
(2) to aid assembly.
8. Position the axle on a suitable workbench and
attach lifting gear to the axle beam being removed.
The axle beams weighs 80 kg. Take
care when removing axle beams
from differential and use suitable
lifting gear.
The brake discs and fixed discs are
loose when the axle beam is
removed. Take care not to damage
brake discs and fixed discs.