Page 59 of 135

21A-44
MANUAL GEARBOX
Reverse gear switch: Removal - Refitting
JB1 or JH1 or JH3 or JR5
21A
REMOVAL
I - REMOVAL PREPARATION OPERATION
aPosition the vehicle on a two-post lift (see Vehicle:
Towing and lifting) (02A, Lifting equipment).
aRemove:
-the front left-hand wheel (see Wheel: Removal -
Refitting) (35A, Wheels and tyres),
-the front left-hand wheel arch liner (see Front
wheel arch liner: Removal - Refitting) (55A, Ex-
terior protection).
aRemove the engine undertray.
II - OPERATION FOR REMOVAL OF PART
CONCERNED
aDisconnect the connector (1) from the reverse gear
switch.aRemove the reverse gear switch using the tool (Bvi.
1934) (2) .
REFITTING
I - REFITTING OPERATION FOR PART
CONCERNED
aApply some SILICONE ADHESIVE SEALANT (see
Vehicle: Parts and consumables for the repair)
(04B, Consumables - Products) to the threading of
the reverse gear switch.
aRefit the reverse gear switch using the (Bvi. 1934).
aTorque tighten the reverse gear switch (23 N.m).
aConnect the reverse gear switch connector.
II - FINAL OPERATION
aFill the gearbox (see 21A, Manual gearbox, Manu-
al gearbox oils: Draining - Filling, page 21A-2) .
aRefit the engine undertray.
aRefit:
-the front left-hand wheel arch liner (see Front
wheel arch liner: Removal - Refitting) (55A, Ex-
terior protection), Special tooling required
Bvi. 1934Socket for removing/refitting
reverse gear switch
Tightening torquesm
reverse gear switch23 N.m
132082
144801
Note:
Seal the housing of the reverse gear switch while
replacing the par t.
Page 60 of 135
21A-45
MANUAL GEARBOX
Reverse gear switch: Removal - Refitting
JB1 or JH1 or JH3 or JR5
21A
-the front left-hand wheel (see Wheel: Removal -
Refitting) (35A, Wheels and tyres).
Page 61 of 135

21B-1
SEQUENTIAL GEARBOX
Sequential gearbox: Precautions for the repair
D4F, and JH1
21B
I - SEQUENTIAL GEARBOX
II - SEQUENTIAL GEARBOX COMPUTER
To disconnect the computer, switch off the ignition and
wait for 1 minute.
III - ELECTRO-HYDRAULIC UNIT
Discharge the pressure accumulator using the Diag-
nostic tool before any operation on the electro-hy-
draulic unit.
Be careful not to twist the high pressure pipes when re-
moving the electro-hydraulic unit.
IV - GEAR SELECTION SENSOREquipment required
Diagnostic tool
IMPORTANT
Before any operation on the sequential system, dis-
charge the accumulator using the Diagnostic tool.
WARNING
If any operation is carried out on the electro-hydrau-
lic unit, it is essential to clean the unit using a clean-
ing product and compressed air.
Never leave the circuit open and never use a high
pressure cleaner.
WARNING
After the accumulator has been fully filled (15 sec-
onds after the ignition has been switched on): the
oil level is at the MINIMUM mark.
WARNING
To remove the gear selection sensor it is essential
that you shift to first gear before removal.
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 63 of 135
21B-3
SEQUENTIAL GEARBOX
Sequential gearbox oil: Draining - Filling
JH1
21B
Oil capacity
DRAINING
I - DRAINING PREPARATION OPERATION
aPosition the vehicle on a two-post lift (see Vehicle:
Towing and lifting) (02A, Lifting equipment).
aRemove:
-the engine undertray bolts,
-the engine undertray.
II - DRAINING OPERATION
aFit a oil recovery tray under the gearbox.aRemove:
-the gearbox drain plug (1) using the tool (Mot.
1018),
-the drain plug seal.
aLet the oil run into the oil recovery tray.
FILLING
I - FILLING PREPARATION OPERATION
aAlways replace the manual gearbox drain plug seal. Special tooling required
Mot. 10188 mm square engine drain
plug spanner.
Equipment required
oil recovery tray
Tightening torquesm
drain plug25 N.m
Gearbox type Oil capacity (in litres)
JH1 2.8
JA32.8
JA52.5
18749
Page 64 of 135
21B-4
SEQUENTIAL GEARBOX
Sequential gearbox oil: Draining - Filling
JH1
21B
aPosition the slot (2) of the new seal towards the
drain plug.
aRefit the drain plug fitted with its new seal.
aTorque tighten the drain plug (25 N.m).
II - FILLING OPERATION
aRemove the filler plug (3) .aFill the gearbox using a syringe containing recom-
mended oil (see 21A, Manual gearbox, Manual
gearbox oil: Specifications, page 21A-1) (Techni-
cal Note 6012A, 04A, Lubricants) until the oil over-
flows out of the filler cap hole.
aRefit the filler plug.
III - FINAL OPERATION
aWipe any oil run-off with a cloth.
aRemove the oil recovery tray.
aRefit the engine undertray.
113764
18749
92081
Page 65 of 135

21B-5
SEQUENTIAL GEARBOX
Pressure accumulator: Removal - Refitting
D4F, and JH1
21B
REMOVAL
I - REMOVAL PREPARATION OPERATION
aRemove:
-the battery (see Battery: Removal - Refitting)
(MR 411, 80A, Battery),
-the sequential gearbox computer (see 21B, Se-
quential gearbox, Sequential gearbox convert-
er: Removal - Refitting, page 21B-47) ,
-the battery tray (see Battery tray: Removal - Re-
fitting) (MR 411, 80A, Battery),
-the petrol injection computer (see Petrol injection
computer: Removal - Refitting) (MR 411, 17B,
Petrol injection).
aDetach from the petrol injection computer mounting:
-the cooling hose,
-the sequential gearbox computer wiring harness,
-the petrol injection computer wiring harness,
-the battery wiring harness.aRemove:
-the petrol injection computer mounting nut (1) ,
-the engine wiring harness nut (2) from the petrol in-
jection computer mounting,
-the petrol injection computer mounting bolts (3) .
aRemove the engine wiring harness from the petrol
injection computer mounting.
aRemove the petrol injection computer mounting. Special tooling required
Mot. 445Oil filter strap wrench.
Equipment required
Diagnostic tool
IMPORTANT
Before carrying out any operation on the sequential
system, discharge the accumulator using the diag-
nostic 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)
.
Note:
To discharge the accumulator and deactivate the
pump assembly pump, (see Fault finding -
Replacement of components) (MR 413, 21B,
Sequential gearbox).
122323
122322
Page 66 of 135
21B-6
SEQUENTIAL GEARBOX
Pressure accumulator: Removal - Refitting
D4F, and JH1
21B
aDetach the breather pipe (4) :
-from the sequential gearbox lifting eye (5) ,
-from the cooling hose (6) .
aRemove:
-the breather pipe (4) from the sequential gearbox,
-the lifting eye nut (5) from the sequential gearbox,
-the lifting eye (5) from the sequential gearbox.aRemove the cooling hose.
aDisconnect the supply connector from the pump as-
sembly pump.
aDetach the pump assembly pump supply connector
from the electro-hydraulic unit connector mounting.
aRemove the electro-hydraulic unit wiring harness.
122314122313