Gearbox Removal / Refitting C3 (A51) Manual 5 Speed Box
Note: Always replace the 2 x Gearbox Centring Pins.
Official Tooling
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| 0216-G2: Forks for Removing Gearbox Control Rods | 0012-Z:
Lower Engine Support Crossmember
"a" : Transverse engine support bar
"b" : support
"c" : Safety bolt
"d" : Longitudinal engine support bar
"e" : bolts
"f" : engine support
"g" : bolts
"h" : bolts
"j" : Pliers |
Removing
CAUTION: The transmission is removed from under the vehicle.
- Place the vehicle on a two-post ramp.
- Set the gearbox in neutral.
- Disconnect the ancillaries battery.
- Lift and support the vehicle.
- Drain gearbox.
Remove:
- The front wheels
- The front left-hand splash-shield (/)
- The drive shafts (/)
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Remove:
- The air inlets and resonator (1)
- The engine management ECU
- The ancillaries battery cover (2)
- The service battery
Release and move aside the electrical harnesses attached to the service battery tray.
Remove the ancillaries battery support. | Unclip and move aside the ancillaries
battery electrical harness sheathing (4).
Disconnect the connector (at "a").
Remove the earth wire (3). |
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Uncouple using tool [0216-G2]:
- The gear engagement cable ball-joint (5)
- The gear selection cable ball-joint (6)
Unlock the gear engagement and selection control cables cable stop (at "b").
Move aside all of the gearbox control cables .
Uncouple the gear engagement lever rod from the lever ( as "c").
Pivot the gearchange transfer earth (7).
Remove the securing bolts from the starter .
Move aside the starter without disconnecting it
(Suspend it using an iron wire). | Remove the bolts (8).
Move aside the hydraulic clutch control slave cylinder (9)
(Without opening the hydraulic circuit). |
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Remove:
- The bolts (11)
- The stabiliser bar (10)
| Remove:
- The bolts (12)
- The reaction link (13)
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Remove:
- The nut (14)
- The stud (15)
- The (16) bolt
| Position:
- The clamps "j" of tool [0012-Z] on the vehicle body sill ( each side)
- The crossbar "a" of tool [0012-Z] on the clamps "j" of tool [0012-Z]
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Position the support "b" of tool [0012-Z] in place of the reaction link rod (13).
Fit and tighten the bolt (12). | Position:
- The longitudinal bar "d" of tool [0012-Z] on the support "b"
of tool [0012-Z] using the screw "g".
- The longitudinal bar "d" of tool [0012-Z] on the crossbar "a"
of tool [0012-Z] using the screw "h".
- The safety bolt "c" on bolt "g"
- The support "f" of the tool [0012-Z] under the engine
sump using the bolts "e"
N.B.: To raise or lower the engine-gearbox assembly, operate the bolt "e". |
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| Remove the engine-gearbox coupling bolts (17). | Remove:
- The 2 bolts (18)
- The gearbox
- The bracket (19)
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Refitting
CAUTION: Adhere to the tightening torques.
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| Reference | Designation | Tightening torque |
| (1) | Engine/gearbox coupling | 5,5 daNm |
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CAUTION: Always replace the gearbox centring pins.
Check:
- That there is no leak at the crankshaft seal
- There are no oil leaks at the stop guide
- The state of wear of the clutch
- The state of wear of the declutch bearing
CAUTION: Clean the input shaft completely along its entire length, over its entire periphery and in the grooves.
Protect the interior of the clutch housing from splashes of grease.
Apply the recommended grease uniformly on the stop guide and the input shaft.
Grease the fingers of the clutch fork.
N.B. : Use MOLYCOTE G-RAPID PLUS grease.
Remove the surplus grease on the top of the grooves and the end of the input shaft using a cloth.
CAUTION: An excess of grease will contaminate the clutch friction plate and cause noise in neutral, slipping or juddering of the clutch.
CAUTION: If the clutch disc is reused, the disc hub must be free of traces of oxidation.
N.B.: Check the presence of new gearbox centring pins.
Clean the bolt threads.
When refitting, the thrust must be on its guide and positioned by the throw-out fork.
CAUTION: Do not crush the starter motor electrical harness while refitting the gearbox.
Attach the gearbox to the engine.
Refit:
- The engine-gearbox coupling bolts (17)
- The (16) bolt
- The stud (15)
- The nut (14)
- The bracket (19)
- The 2 bolts (18)
- The starter motor
- The fixing screws of the starter
- Remove the tool [0012-Z].
Refit:
- The reaction link (13)
- The bolts (12)
- The stabiliser bar (10)
- The bolts (11)
Reposition the hydraulic clutch control slave cylinder (9).
Refit the bolts (8).
Attach the gear engagement and selection cable sleeve stops (at "b").
N.B.:The sleeve stops are locked automatically on refitting. Check that the cable stops are locked correctly.
Couple up:
- The gear engagement cable ball-joint (5)
- The gear selection cable ball-joint (6)
Position: The gearchange transfer earth (7).
Couple up: The gearchange transfer rod ( as "c").
Refit the fixing: Earth lead (3).
Connect the connector ( as "a").
Reclip the ancillaries battery electrical harness sheathing (4).
Refit the ancillaries battery support .
Secure the electrical harnesses attaching to the service (ancillaries) battery tray .
Refit:
- The air inlets and resonator (1)
- The engine management ECU
- The service battery
CAUTION: Perform the operations that are required following a reconnection of the ancillaries battery.
Reconnect the ancillaries battery.
Refit:
- The ancillaries battery cover (2)
- The drive shafts (/)
- The front left-hand splash-shield (/)
- The front wheels
Fill the gearbox via the breather opening: 2 litres.
Initialise the various ECUs.
Remove the vehicle from the ramp.
Here endeth the lesson....
