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Audi A6 Timing Chain Guide

This document provides instructions for valve timing procedures on an Audi A6 allroad 3.0L diesel engine. It lists the special tools needed and general precautions to take. The procedures involve removing the timing chains, covers, and sprockets, locking the crankshaft, camshafts and balancer shaft, adjusting the camshaft sprockets, and reinstalling the parts in reverse order. Safety precautions like disconnecting the battery and markings sensor positions are advised.

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Alvaro Gisbert
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89 views3 pages

Audi A6 Timing Chain Guide

This document provides instructions for valve timing procedures on an Audi A6 allroad 3.0L diesel engine. It lists the special tools needed and general precautions to take. The procedures involve removing the timing chains, covers, and sprockets, locking the crankshaft, camshafts and balancer shaft, adjusting the camshaft sprockets, and reinstalling the parts in reverse order. Safety precautions like disconnecting the battery and markings sensor positions are advised.

Uploaded by

Alvaro Gisbert
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
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Special tools

Camshaft locking pin x 2 - No.T40060.


Crankshaft alignment tool - No.T40049.
Crankshaft locking pin - No.3242.
Crankshaft pulley alignment tool - No.T40058.
Injection pump/balancer shaft locking pin - No.3359.

General precautions

Disconnect battery earth lead.


Remove glow plugs to ease turning engine.
Turn engine in normal direction of rotation (unless otherwise stated).
Observe tightening torques.
If fitted: Mark position of crankshaft position (CKP) sensor before removal.
Do NOT turn crankshaft via camshaft or other sprockets.
Do NOT turn crankshaft or camshaft with timing chain removed.

Valve timing procedures

Timing chains located at rear of engine.


Removal/installation of timing chain(s) requires:
Sump removal.
Gearbox/drive plate removal.
Turn crankshaft until just before TDC on No.1 cylinder. Tool No.T40049.
Remove blanking plug from sump [1] .
Slowly turn crankshaft pulley clockwise until locking pin can be inserted in crankshaft [2] . Tool No.3242.
Remove timing chain LH & RH upper covers [3] & [4] .
Remove the camshaft sprocket bolt positioned at 5 o'clock on RH camshaft sprocket [5] .
Remove the camshaft sprocket bolt positioned at 7 o'clock on LH camshaft sprocket [6] .
Ensure balancer shaft can be locked in position [7] . Tool No.3359.
Ensure both camshafts can be locked in position [8] . Tool No.T40060.

NOTE: If camshaft locking pins cannot be fitted valve timing is incorrect.

Lock timing chain tensioners in retracted position before carrying out engine repairs:
Push plunger into tensioner housing [9] .
Insert 3,3 mm pin to lock tensioner plunger [10] .

NOTE: Upper chain tensioner bolts MUST only be used once.

If necessary, slacken bolts of each camshaft sprocket 1 turn [11] .


Rotate camshaft until camshaft locking pin can be fitted [8] . Tool No.T40060.
Rotate camshaft locking pin to alignment position [12] . Tool No.T40060.

NOTE: The side pin of camshaft locking pin must be in line with centre of camshaft sprocket.

Ensure threaded holes positioned centrally in slots of camshaft sprocket and balancer shaft sprocket [13] & [14] .

Manufacturer: Audi Model: A6 allroad (4FH) (06-11) 3,0D TDI (c) Autodata Limited 2013
Engine code: ASB Output: 171 (233) 4000 . 21/04/2022
Tuned for: Year: 2006-08 V9.200-
NOTE: Camshaft sprocket bolts MUST only be used once.

Tighten camshaft sprocket bolts to 5 Nm [11] .


Remove camshaft locking pins [8] & [12] . Tool No.T40060.
Tighten camshaft sprocket bolts to 23 Nm [11] .
Remove crankshaft locking pin [2] . Tool No.3242.
Release timing chain tensioner after repairs [10] .
Install blanking plug [1] .

Manufacturer: Audi Model: A6 allroad (4FH) (06-11) 3,0D TDI (c) Autodata Limited 2013
Engine code: ASB Output: 171 (233) 4000 . 21/04/2022
Tuned for: Year: 2006-08 V9.200-
Manufacturer: Audi Model: A6 allroad (4FH) (06-11) 3,0D TDI (c) Autodata Limited 2013
Engine code: ASB Output: 171 (233) 4000 . 21/04/2022
Tuned for: Year: 2006-08 V9.200-

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