lock AUDI A6 1998 C5 / 2.G AEB ATW Engines Valvetrain Servicing Workshop Manual

15-42

Oil seals for camshafts, replacing


Cylinder head installed
Lock carrier in service position Page 13
-1

Special tools and equipment

2085 seal puller
3241 seal installer
3036 retainer

Replacing exhaust camshaft oil seal

Removing

- Remove ribbed belt and ribbed belt tensioner
Page 13
-15
.

- Remove engine covers.

- Remove upper toothed belt cover Page 13
-
29
.

-
Turn crankshaft at central bolt of toothed belt gear in direction of
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15-50

Camshafts and hydraulic chain
tensioner, removing and installing


Cylinder head installed
Lock carrier in service position Page 13
-1

Special tools and equipment

3036 retainer
3366 bracket-tensioner

Removing

- Remove ribbed belt and ribbed belt tensioner
Page 13
-15
.

- Remove engine covers.

- Remove upper toothed belt cover Page 13
-
29
.

- Turn crankshaft at central bolt of toothed belt gear in direction of engine
rotation to TDC Cyl. 1 marking (arrows).
- Remove cylinder head cover Page 15
-17
.
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15-61

Vehicles with manual transmission

- Switch ignition off, shift into fourth gear and push
vehicle forward.

Vehicles with automatic transmission

- Remove noise insulation panel and turn central
bolt of toothed belt gear for crankshaft in
clockwise direction.

- Determine play between cams and valve
lifters.

CAUTION! - Push down on valve lifters using wood or plastic wedge. If 0.20 mm
(0.008 in.) feeler gauge can be inserted between camshaft and valve
lifter, replace valve lifter.
Valve lifter, replacing Page 15
-50
.
After installing the camshafts, the engine must not be started for
approx. 30 minutes. The hydraulic valve lifters have to settle
(otherwise valves will strike the pistons). After installing the valvetrain and lifters, carefully rotate the
crankshaft by hand at least 2 full revolutions before starting to be
sure that valves do not strike the pistons.
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11/18/2002 htt
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e=re
pair&id=AUDI.B5.GE02.15.3