Ribbed belt drive for vane pump, alternator and air conditioner — AUDI
Ribbed belt drive for vane pump, alternator and air conditioner on Audi: factory workshop procedure for engines AAH, ABC, ACZ, AEJ.
Workshop procedure for AUDI — the factory write-up, straight from real workshop data.
📐 15 workshop diagrams for AAH
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.
ABC ACZ AEJ
Notes:
Mark the running direction with chalk or felt pen before removing the ribbed belt. If the belt runs in the opposite direction when it is refitted, this can cause breakage. Ensure that the belt is properly seated in the pulleys when installing.
The illustration shows the ribbed belt drive as of 08.94.
Ribbed belt routing => Page
13-12
.
On vehicles up to 07.91, if the air conditioner compressor has been detached, the alignment of the ribbed belt must be checked => Page
13-13
.
Vibration damper
2.8 litre engines only
Removing and installing
=>Page
13-16
.
22 Nm
Ribbed belt
Ribbed belt routing on vehicles up to 07.91 =>Fig.
13-7
Ribbed belt routing on vehicles from 08.91 to 07.94 =>Fig.
13-7
Ribbed belt routing on vehicles as of 08.94 => Fig.
13-8
Check for wear
Do not kink
Removing and installing
=>Page
13-9
.
22 Nm
Alternator
Removing:
Remove rear seat bench.
=> General Body Assembly; Repair group 72
General Body Assembly
Disconnect battery earthing strap
Remove engine cover.
Remove ribbed belt
=>Page
13-9
.
Remove noise insulation panel.
Disconnect air duct between alternator and lock carrier.
Unscrew earth wire at right engine support.
Unscrew electrical wire at engine mount and/or oil sump.
Loosen screwed connections at top and bottom.
Disconnect wiring from alternator
Remove alternator
45 Nm
22 Nm
Bracket
For alternator
45 Nm
Spacer sleeve
55 Nm
22 Nm
Belt pulley
For vane pump
To remove and install, counterhold with special tool 3212 => Fig.
13-8
Pressure pipe
to power steering
Banjo bolt - 40 Nm
Sealing ring
Replace
22 Nm
Vane pump with bracket
For power steering
Removing and installing:
=> Running Gear, FWD and 4WD; Repair group 48
Running Gear, FWD and 4WD
22 Nm
Tensioner for ribbed belt
25 Nm
Air conditioner compressor
Do not unscrew or disconnect refrigerant hoses or pipes.
After removing compressor from mountings, secure to chassis side member with wire or similar. Do not leave compressor suspended on refrigerant hoses.
On vehicles up to 07.91, if the air conditioner compressor has been detached, the alignment of the ribbed belt must be checked => Page
13-13
Special nut - 25 Nm
Belt pulley
For ribbed belt
Can only be installed in one position
Removing and installing
=>Page
13-16
.
Fig.1
Ribbed belt routing on vehicles up to 07.91
A1 -
without air conditioner
A2 -
with air conditioner
Fig.2
Ribbed belt routing on vehicles from 08.91 to 07.94
B1 -
without air conditioner
B2 -
with air conditioner
Fig.3
Ribbed belt routing on vehicles as of 08.94
C1 -
without air conditioner
C2 -
with air conditioner
Fig.4
Removing and installing pulley for vane pump
To remove and install counterhold with 2-hole pin wrench 3212.
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.