21A-34
MANUAL GEARBOX
Manual gearbox: Repair
JB1
21A
REMOVAL
I - REPAIR PREPARATION OPERATION
aRemove the gearbox (see 21A, Manual gearbox,
Manual gearbox: Removal - Refitting, page 21A-
24) .
aPosition the gearbox on the component support (see
Gearbox support equipment: Use) .
II - REMOVAL OPERATION.
aRemove:
-the fifth gear housing (see 5th gear housing: Re-
moval - Refitting) ,
-the fifth gear synchroniser and pinions (see 5th
gear sprockets and synchronisers: Removal -
Refitting) ,
-the mechanism housing (see Mechanism hous-
ing: Removal - Refitting) ,
-the gearbox shafts (see Gearbox shaft: Removal
- Refitting) ,
-the differential (see Manual gearbox differential:
Removal - Refitting) .
III - REPAIR OPERATION
aStrip down the output shaft (see Output shaft:
Stripping - Rebuilding) .
aCheck the shafts (see Manual gearbox: Check) .
aRemove:
-the differential bearings (see Manual gearbox dif-
ferential bearing: Removal - Refitting) ,
-the bearings of the mechanism housing (see
Mechanism housing bearing: Removal - Refit-
ting) ,
-the bearings of the clutch housing (see Clutch
housing bearing: Removal - Refitting) ,
-the manual gearbox selector shaft (see Manual
gearbox selector shaft: Removal - Refitting) .
REFITTING
I - REFITTING PREPARATION OPERATION
aClean all the removed parts (see Manual gearbox:
Precautions for the repair) .
aReplace worn or damaged parts.
aParts always to be replaced:
-the lip seals,
-the O-rings,
-the clutch thrust bearing guide,
-the gear lock rings,
-the roll pins,
-the input and output shaft bearing circlips,
-the synchroniser hub springs,
-the removed bearings,
-the selector shaft rings,
-the spy seals,
-the hydraulic clutch thrust bearing (if equipped),
-the magnet.
II - REFITTING OPERATION
aRefit:
-the gearbox selector shaft (see Manual gearbox
selector shaft: Removal - Refitting) ,
-the bearings of the clutch housing (see Clutch
housing bearing: Removal - Refitting) ,
-the bearings of the mechanism housing (see
Mechanism housing bearing: Removal - Refit-
ting) ,
-the differential bearings (see Manual gearbox dif-
ferential bearing: Removal - Refitting) ,
-the differential (see Manual gearbox differential:
Removal - Refitting) .
aRebuild the output shaft (see Output shaft: Strip-
ping - Rebuilding) .
aRefit:
-the gearbox shafts (see Gearbox shaft: Removal
- Refitting) ,
-the mechanism housing (see Mechanism hous-
ing: Removal - Refitting) ,
-the fifth gear synchroniser and pinions (see 5th
gear sprockets and synchronisers: Removal -
Refitting) , IMPORTANT
To avoid all risk of damage to the systems, apply
the safety and cleanliness instructions and opera-
tion recommendations before carrying out any
repair (see Manual gearbox: Precautions for the
repair) .
21A-36
MANUAL GEARBOX
Manual gearbox: Repair
JH1 or JH3 or JR5
21A
REMOVAL
I - REPAIR PREPARATION OPERATION
aRemove the gearbox (see 21A, Manual gearbox,
Manual gearbox: Removal - Refitting, page 21A-
24) .
aPosition the gearbox on the component support (see
Gearbox support equipment: Use) .
II - REMOVAL OPERATION
aRemove:
-the fifth gear housing (see 5th gear housing: Re-
moval - Refitting) ,
-the fifth gear synchroniser and pinions (see 5th
gear sprockets and synchronisers: Removal -
Refitting) ,
-the mechanism housing (see Mechanism hous-
ing: Removal - Refitting) ,
-the gearbox shafts (see Gearbox shaft: Removal
- Refitting) ,
-the differential (see Manual gearbox differential:
Removal - Refitting) .
III - REPAIR OPERATION
aStrip down the output shaft (see Output shaft:
Stripping - Rebuilding) .
aRemove:
-the differential bearings (see Manual gearbox dif-
ferential bearing: Removal - Refitting) ,
-the bearings of the mechanism housing (see
Mechanism housing bearing: Removal - Refit-
ting) ,
-the bearings of the clutch housing (see Clutch
housing bearing: Removal - Refitting) ,
-the gearbox selector shaft (see Manual gearbox
selector shaft: Removal - Refitting) .aUse SURFACE CLEANER (see Vehicle: Parts
and consumables for the repair) to clean all of the
removed parts.
aCheck (see Manual gearbox: Check) :
-the pinions (teeth, claws, friction cone, inner wall),
-the synchroniser hubs,
-the synchroniser rings,
-the bearings.
aReplace worn or damaged parts.
REFITTING
I - REFITTING PREPARATION OPERATION
aParts always to be replaced:
-the lip seals,
-the O-rings,
-the clutch thrust bearing guide,
-the gear lock rings,
-the roll pins,
-the input and output shaft bearing circlips,
-the selector rod hub springs,
-the hydraulic clutch slave cylinder (if fitted),
-the magnet,
-the selector shaft rings,
-the lock ring of the differential,
-the differential retaining nut.
II - REFITTING OPERATION
aRefit:
-the gearbox selector shaft (see Manual gearbox
selector shaft: Removal - Refitting) ,
-the bearings of the clutch housing (see Clutch
housing bearing: Removal - Refitting) ,
-the bearings of the mechanism housing (see
Mechanism housing bearing: Removal - Refit-
ting) ,
-the differential bearings (see Manual gearbox dif-
ferential bearing: Removal - Refitting) .
aRebuild the output shaft (see Output shaft: Strip-
ping - Rebuilding) . IMPORTANT
To avoid all risk of damage to the systems, apply
the safety and cleanliness instructions and opera-
tion recommendations before carrying out any
repair (see Manual gearbox: Precautions for the
repair) .
21A-42
MANUAL GEARBOX
Input shaft lip seal: Removal - Refitting
JB1
21A
aPlace the tightening clamp (3) onto the tube.
aLock the tightening clamp using the spanner (4) .
aTighten the nut firmly (5) .
aPosition the sleeve (6) and the split ring (7) .
aTurn the upper nut (8) .
aGently extract the guide tube.
REFITTING
I - REFITTING OPERATION FOR PART
CONCERNED
aPosition the new guide tube on the clutch housing.
aGently remove the guide tube with a press and the
(Bvi. 1828).
II - FINAL OPERATION.
aRefit the gearbox (see 21A, Manual gearbox, Man-
ual gearbox: Removal - Refitting, page 21A-24)
(MR 411, 21A, Manual gearbox).
aConnect the battery (see Battery: Removal - Refit-
ting) (MR 411, 80A, Battery).
98937
98938
98939
98935-1
21B-13
SEQUENTIAL GEARBOX
Electro-hydraulic unit: Removal - Refitting
D4F, and JH1
21B
aMark the positions:
-of the left-hand suspended engine mounting on the
body,
-of the rubber pad on the left-hand suspended en-
gine mounting.
aRemove:
-the left-hand suspended engine mounting rubber
pad nut (4) ,
-the left-hand suspended engine mounting rubber
pad bolts (5) ,
-the rubber pad from the left-hand suspended en-
gine mounting
aLower the sequential gearbox to access the left-
hand suspended engine mounting bolt on the body.
aRemove:
-the left-hand suspended engine mounting bolts (6)
,
-the left-hand suspended engine mounting.aRemove:
-the selector shaft cover bolt (7) ,
-the selector shaft cover (8) .
aDisconnect the connector (9) from the electro-hy-
draulic unit by moving the lock (10) .
II - OPERATION FOR REMOVAL OF PART
CONCERNED
aRemove the clutch stay cable (11) from the clutch
fork.
120310122321
122168
21B-14
SEQUENTIAL GEARBOX
Electro-hydraulic unit: Removal - Refitting
D4F, and JH1
21B
Selector shaft locked
Selector shaft unlocked
aUnlock the gear selector shaft by turning the shaft by
a quarter of a turn using a screwdriver.aDetach the breather pipe (12) :
-from the sequential gearbox lifting eye (13) ,
-from the cooling hose (14) .
aDisconnect the sequential gearbox speed sensor
connector (15) using a screwdriver on the lock (16) .
17970
17969122314
122174
21B-16
SEQUENTIAL GEARBOX
Electro-hydraulic unit: Removal - Refitting
D4F, and JH1
21B
aIt is essential to replace the electro-hydraulic unit
seal.
aPlace the actuator module selector shaft in a raised
and locked position.
II - REFITTING OPERATION FOR PART
CONCERNED
aFit:
-the new electro-hydraulic unit seal,
-the electro-hydraulic unit.
aRefit:
-the sequential gearbox lifting eye on the sequential
gearbox,
-the breather pipe on the sequential gearbox.
-the electro-hydraulic unit nuts,
-the electro-hydraulic unit bolts.
aConnect the sequential gearbox speed sensor con-
nector.
aAttach the breather pipe:
-to the cooling hose,
-to the sequential gearbox lifting eye.aPress on the selector shaft with a screwdriver to clip
the sequential gearbox selector shaft to the actuator
module.
aRefit the clutch stay cable to the clutch fork.
aConnect the electro-hydraulic unit connector by
moving the lock.
III - FINAL OPERATION
aRefit:
-the selector shaft cover,
-the selector shaft cover bolt.
aFit the left-hand suspended mounting on the body.
aFit the left-hand suspended engine mounting bolts
without tightening them.
aTorque tighten the left-hand suspended engine
mounting bolts (21 N.m).
aRaise the sequential gearbox to its original position.
aFit the left-hand suspended engine mounting rubber
pad.
aFit the left-hand suspended engine mounting rubber
pad bolts without tightening them.
aTorque tighten the left-hand suspended engine
mounting rubber pad bolts ( 62 N.m).
aFit the left-hand suspended engine mounting rubber
pad nut without tightening it.
aTorque tighten the left-hand suspended engine
mounting rubber pad nut (105 N.m ).
17970
17970
21B-34
SEQUENTIAL GEARBOX
Clutch position sensor: Removal - Refitting
D4F, and JH1
21B
REMOVAL
I - REMOVAL PREPARATION OPERATION
aPosition the vehicle on a two-post lift (see Vehicle:
Towing and lifting) (02A, Lifting equipment).
II - OPERATION FOR REMOVAL OF PART
CONCERNED
aDisconnect the clutch position sensor connector (1) .
aRemove:
-the clutch position sensor bolts (2) ,-the clutch position sensor.
REFITTING
I - REFITTING OPERATION FOR PART
CONCERNED
a
aPosition the clutch position sensor on the cylinder
control shaft.
aPivot the clutch position sensor clockwise until the
holes of the sensor are opposite the mounting holes.
aTighten the clutch position sensor bolts.
aConnect the clutch position sensor connector.
II - FINAL OPERATION.
aCarry out the necessary operations using the Diag-
nostic tool (see Fault finding - Replacement of
components) (21B, Sequential gearbox). Equipment required
Diagnostic tool
IMPORTANT
Consult the safety and cleanliness advice and oper-
ation recommendations before carrying out any
repair (see 21B, Sequential gearbox, Sequential
gearbox: Precautions for the repair, page 21B-1)
.
IMPORTANT
Before carrying out any operation on the sequential
system, discharge the accumulator using the diag-
nostic tool.
122326
127569
Note:
The clutch cab le (3) must be in place on the fork,
i.e. out of the cylinder casing.
21B-47
SEQUENTIAL GEARBOX
Sequential gearbox converter: Removal - Refitting
D4F, and JH1
21B
REMOVAL
I - REMOVAL PREPARATION OPERATION
aRemove the battery (see Battery: Removal - Refit-
ting) (MR 411, 80A, Battery).
II - OPERATION FOR REMOVAL OF PART
CONCERNED
aUnclip (1) the sequential gearbox computer from its
mounting (2) .aDisconnect the sequential gearbox computer con-
nectors (3) by pressing the locks.
aRemove the sequential gearbox computer.
REFITTING
I - REFITTING OPERATION FOR PART
CONCERNED
aConnect the sequential gearbox computer connec-
tors by pressing the locks.
aClip the sequential gearbox computer onto its
mounting.
II - FINAL OPERATION
aRefit the battery (see Battery: Removal - Refitting)
(MR 411, 80A, Battery).
aIf replacing the sequential gearbox computer, carry
out the necessary operations using the Diagnostic
tool (see Fault finding - Replacement of compo-
nents) (MR 413, 21B, Sequential gearbox). Equipment required
Diagnostic tool
122324
122325