Safety Warning

DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.

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HOMESERVICE MANUALSAUDI2004A8REPAIR AND DIAGNOSISENGINE PERFORMANCETUNE-UP4.2L - ENGINE MECHANICAL, ENGINE CODE(S): BFM13 - ENGINE - CRANKSHAFT, CYLINDER BLOCKENGINE, DISASSEMBLING AND ASSEMBLINGTOOTHED BELT, REMOVING AND INSTALLING

2004 Audi A8

Toothed belt, removing and installing

2004 Audi A8SECTION Toothed belt, removing and installing

Fig 1: Identifying Special Tools - Toothed Belt, Removing And Installing

GW00028801

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Special tools, testers and auxiliary items required

Tightener pulley wrench T40009
Crankshaft Holder 3242
Torque wrench V.A.G 1783
Ratchet 1/4" VAS 6234

Puller T40001 with claws T40001/2
Camshaft locator T40005

Fig 2: Securing Pin T40011

GW00014233

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Securing pin T40011

Fig 3: Spanner Wrench 3212

GW00004001

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Spanner Wrench 3212

Toothed belt, removing

NOTE:

Before raising the vehicle on a hoist (wheels off the ground), first activate the vehicle jack mode → 43 - Self Leveling Suspension .

Remove front bumper → 63 - BUMPERS .
Remove lock carrier → 50 - BODY - FRONT .
Remove ribbed belt → Ribbed belt, removing and installing

Fig 4: Removing Engine Cover

GW00028716

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Remove engine cover - 2 - upward.
Remove upper toothed belt guard at left and right.

CAUTION: Only turn over the engine at the crankshaft in direction of engine rotation (clockwise).

Turn crankshaft at center bolt of toothed belt gear in direction of engine rotation to TDC Cyl. 5 5 marking.

Fig 5: Identifying Notch Aligns With Marking

GW00026542

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Notch - B - aligns with marking - A -

NOTE:

Turning over engine is performed at the center bolt of the crankshaft.

Check position of camshafts:

Fig 6: Identifying Large Holes On Securing Plates At Camshaft Gears Aligns On Inside

GW00028802

Courtesy of VOLKSWAGEN UNITED STATES, INC.

The large holes - arrows - on securing plates at camshaft gears must align on inside.

In case they do not align, turn one more rotation.

Fig 7: Disconnecting Water Pipe From Oil Pan

GW00028803

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Disconnect water pipe - arrow - from oil pan.

Fig 8: Disconnecting Water Pipe From Engine Block

GW00028804

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Disconnect water pipe from engine block - arrow -.

Fig 9: Removing Locking Bolt Of TDC Marking At Upper Part Of Oil Pan

GW00026543

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Remove locking bolt - arrow - of TDC marking at upper part of oil pan.

NOTE:

In the crankshaft, a TDC bore is located exactly behind the locking bolt (can be felt by touch).

RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.
• Brakes feel soft, pull hard to one side, or make grinding noises.
• The engine overheats, stalls repeatedly, or misfires under load.
• You are missing required tools, torque specs, or safe lifting equipment.
• You are not confident in the next step or safety outcome.