Page 51 of 135

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) .
Page 57 of 135
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
Page 58 of 135
21A-43
MANUAL GEARBOX
Input shaft lip seal: Removal - Refitting
JH1 or JH3 or JR5
21A
aReplace the lip seal after having opened the gear-
box (see Clutch housing bearing: Removal - Re-
fitting) (Technical Note 6029A, 21A, Manual
gearbox).
Page 62 of 135
21B-2
SEQUENTIAL GEARBOX
Sequential gearbox: List and location of components
D4F, and JH1
21B
122171
(1) Actuator module high pressure
supply pipe
(2) Clutch stay high pressure supply
pipe
(3) Reservoir retur n hose
(4) Engagement solenoid v alve 2
(5) Solenoid valve unit pressure
sensor
(6) Clutch position sensor
(7) Tank
122172
(8) Pump unit
(9) Actuator module
(10) Gear selection sensor
(11) Clutch solenoid valve
(12) Engagement solenoid valve 1
(13) Selection solenoid valve 3
(14) Selection solenoid valve 4
(15) Engagement sensor
122160
(16) Sequential gearbox speed sen-
sor
Page 73 of 135
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
Page 76 of 135

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
Page 79 of 135

21B-19
SEQUENTIAL GEARBOX
Pump assembly: Removal - Refitting
D4F, and JH1
21B
aPosition the (Ms. 583) on the reservoir low pressure
return hose (1) .
aRemove the clip (2) from the reservoir return hose.
aDisconnect the reservoir low pressure return hose
(1) from the actuator module.
aRemove:
-the clutch stay high pressure supply pipe bracket
bolt (3) ,
-the actuator module high pressure supply pipe by
pressing on the unions (4) ,
-the clutch stay high pressure supply pipe by press-
ing on the unions (5) ,
-the pump assembly from the actuator module.
REFITTING
I - REFITTING OPERATION FOR PART
CONCERNED
aFit:
-the clutch stay high pressure supply pipe,
-the actuator module high pressure supply pipe.
aFit the high pressure pipe unions, without tightening
them.aConnect the reservoir low pressure return hose to
the actuator module.
aRefit the reservoir return hose clip on the actuator
module.
aRemove the (Ms. 583) from the reservoir low pres-
sure return hose.
aClip the pump assembly supply connector onto the
electro-hydraulic unit connector mounting.
aConnect the pump assembly supply connector.
II - FINAL OPERATION
aRefit the electro-hydraulic unit (see 21B, Sequential
gearbox, Electro-hydraulic unit: Removal - Refit-
ting, page 21B-11) .
aTorque tighten the high pressure pipe unions (14
N.m).
aRefit:
-the clutch stay high pressure supply pipe bracket
bolt,
-the front wheel arch liners (see Front wheel arch
liner: Removal - Refitting) (55A, Exterior protec-
tion),
-the front wheels (see Wheel: Removal - Refitting)
(35A, Wheels and tyres),
-the rear suspended engine mounting (see Lower
engine tie-bar: Removal - Refitting) (19D, En-
gine mounting),
-the petrol injection computer (see Petrol injection
computer: Removal - Refitting) (17B, Petrol in-
jection),
-the battery tray (see Battery tray: Removal - Re-
fitting) (80A, Battery),
-the sequential gearbox computer (see 21B, Se-
quential gearbox, Sequential gearbox convert-
er: Removal - Refitting, page 21B-47) ,
-the battery (see Battery: Removal - Refitting)
(80A, Battery).
aFill the electric pump assembly reservoir with oil
(see Sequential gearbox oil: Specifications)
(Technical Note 6012, 04A, Lubricants) to between
32 and 38 mm above the MIN mark.
122171
Note:
Prepare for oil to flow out of the electro-hydraulic
unit.
WARNING
After the accumulator has been fully filled (15
seconds after the ignition has been switched on):
the oil level is at the MINIMUM mark.
Page 84 of 135
21B-24
SEQUENTIAL GEARBOX
Solenoid valves: Removal - Refitting
D4F, and JH1
21B
1 - Removing engagement solenoid valve 1,
selection solenoid valve 3 and selection solenoid
valve 4
a
aRemove the solenoid valve affected, following the
correct removal order for the solenoid valves:
-the clutch solenoid valve (13) ,
-selection solenoid valve 4 (14) ,
-selection solenoid valve 3 (15) ,
-engagement solenoid valve 1 (16) .2 - Removing engagement solenoid valve 2
aDisconnect the following connectors :
- (17) from the solenoid valve unit pressure sensor,
- (18) from engagement solenoid valve 2.
aRemove the actuator module wiring harness.
122172
Note:
Prepare for oil to flow out of the electro-hydraulic
unit.
122320