Assembly overview - removing and installing gearbox housing and selector mechanism — VW
Assembly overview - removing and installing gearbox housing and selector mechanism on VW: factory workshop procedure for engines BYD, CDLA, CDLC, CDLF.
Workshop procedure for VW — the factory write-up, straight from real workshop data.
📐 80 workshop diagrams for BYD
Real factory drawings for this job — timing marks, bolt locations and routing. Locked in the free view.
📋 Procedure
ℹ️ Torque figures below come verbatim from workshop data — always cross-check against your vehicle's factory manual before final tightening.
Assembly overview - removing and installing gearbox housing and selector mechanism
Countersunk bolt, 33 Nm
Flange shaft with compression spring
Removing and installing
Chapter
Assembling
Chapter
Retaining ring
For sheet metal cover plate
Fitted from gearbox date 21 01 8
Discontinued for plastic cover plate
Cover plate
Made of sheet metal or plastic
Sheet metal: from gearbox date 21 01 8 secured with circlip
Item
Made of plastic: circlip
Item
discontinued
Allocate components using
Electronic Parts Catalogue
Retaining ring
For deep groove ball bearing of input shaft
Item
Reversing light switch
F4
, 20 Nm
Changed to captive seal shortly after introduction of gearbox
Item
.
Seal
Not fitted in all gearboxes
Renew after removal
Oil drain plug
Torque setting
Fig.
Seal
Renew after removal
Bolt, 6 Nm
Gearbox neutral position sender
G701
for vehicles with Start/Stop system
Locking bolt
For selector shaft
Renew locking bolt after each removal.
Locking bolt made of metal or plastic.
Locking bolt made of metal, 45 Nm
Locking bolt made of plastic, 30 Nm
Bolt
Renew after each removal. For allocation, refer to
Electronic Parts Catalogue
.
Note different bolts and specified torques.
Hexagon socket round head bolt =
»through gearbox manufacture date 06 12 9«
aluminium bolt M°8 = tighten to 8 Nm and turn 180° further
Hexagon socket round head bolt =
»from gearbox manufacture date 07 12 9«
aluminium bolt M°9 = tighten to 15 Nm and turn 180° further
External hexagon socket head bolt = steel bolt = tighten to 15 Nm and turn 90° further
Allocation of steel bolts as replacement part
Fig.
Bolt
Renew after each removal. For allocation, refer to
Electronic Parts Catalogue
.
Note different bolts and specified torques.
Hexagon socket round head bolt =
»through gearbox manufacture date 06 12 9«
aluminium bolt M°8 = tighten to 8 Nm and turn 180° further
Hexagon socket round head bolt =
»from gearbox manufacture date 07 12 9«
aluminium bolt M°9 = tighten to 15 Nm and turn 180° further
External hexagon socket head bolt = steel bolt = tighten to 15 Nm and turn 90° further
Allocation of steel bolts as replacement part
Fig.
Selector unit
(Selector shaft with selector shaft cover)
Repairing
Chapter
.
Removing with gearbox installed:
Remove battery and battery tray
Electrical system
Rep. gr.
27
Battery; Removing and installing battery
The angled rod
Item
for adjusting the selector mechanism must not be engaged.
Remove selector cables and gearbox selector lever
Chapter
Remove locking screw
Item
and pull out selector mechanism
Bolt, 20 Nm
Renew after removal
O-ring
Renew after removal
Clutch housing
Repairing
Chapter
.
Gearbox housing
Repairing
Chapter
.
For steel bolts (external hexagon socket head bolts) as replacement part, note allocation:
A
Bolt with captive washer
B
Bolt without washer
C
Bolt with captive washer
TorqFix answers live for your specific car — tell it the engine code and it serves the matching sequence, torque figures and wiring for that exact variant.
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Who makes these pages, and how
TorqFix was built by a mechanic — after a 2,700 km drive with five roadside repairs that no diagnostic tool could explain.
The figures on this page come from manufacturer workshop documentation and are shown as they are. The page is assembled automatically from that data — it is not written by an AI. The AI works in the chat, where it answers for your specific car. It writes nothing here.
Variants of the same model differ. Cross-check torque against the factory manual for your engine before final tightening.
Seen a figure that does not match your manual? Write to us — we correct it and note when. support@torqfix.com
The story behind TorqFix →Workshop data on this page last updated 20 Sep 2026.