timing belt AUDI A4 2000 B5 / 1.G AHA ATQ Engines Cylinder Block Crankshaft And Flywheel Component Service Manual

13-13


- Turn crankshaft at central bolt of toothed belt gear in direction of
engine rotation to cyl. 1 TDC. Timing marks -A- and -B- must be
aligned.

WARNING!
DO NOT turn crankshaft while checking for TDC mark. Personal
injury may result. - Check position of camshafts. Large holes (arrow) of securing plates on
camshaft sprockets must face toward inside and align.
If not, turn crankshaft one revolution further.
- Remove sealing plug from left-side of cylinder block.
- Top Dead Center (TDC) mark on crankshaft must be visible or be felt
behind bore of removed sealing plug.
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13-17


1) Always replace the center bolt. 2) Two turns of 90 are permissible. - Using 8 mm hex wrench, turn toothed belt tensioner roller -1- counter-
clockwise, opposite direction shown (arrow) until tensioning lever -2-
compresses tensioner -3- so that spring clamp can be removed and
then remove clamp.
- Before starting engine, pre-load timing tensioning roller as follows:
- Using a torque wrench with 8 mm hex bit, apply tension to toothed
belt clockwise in direction shown (arrow) until a torque of 15 Nm is
attained. This ensures tensioner has expanded completely and is
properly engaging toothed belt. Component
Tightening torque
Toothed belt sprocket to camshaft 55 (41 ft lb)
Idler wheel 45 (33 ft lb)
Toothed belt tensioning roller 20 (15 ft lb)
Belt pulley to crankshaft 20 (15 ft lb)
Toothed belt tensioner 10 (7 ft lb)
Center bolt 1) to crankshaft
200 (148 ft lb) + 180 2)
Pa
ge 16 of 33 C
ylinder block, crankshaft and fl
ywheel, servicin
g
11/21/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.GE03.13.2