check oil AUDI A4 1998 B5 / 1.G APB Engine Valve Gear Service Workshop Manual

15-3


4 -
Oil line outlet side
For lubricating bearing capNote installation position Fig. 3
5 -
Exhaust camshaft
Checking axial clearance Page 15
-86
Removing and installing Page 15
-75
Check radial clearance with Plastigage
(lifters removed) Wear limit: 0.1 mm Run-
out: 0.01 mm (maximum)
6 -
Cap Always replace
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15-4


7 -
Oil line, inlet side
Note installation position Fig. 2For lubricating bearing cap
8 -
Inlet camshaft bearing cap With connection for oil feed lineNote installation position and numbering
Page 15
-75

9 -
Inlet camshaft
Checking axial clearance Page 15
-86
Removing and installing Page 15
-75
Check radial clearance with Plastigage
(lifters removed) Wear limit: 0.1 mm Run-
out: 0.01 mm (maximum)
10 -
Drive chain Installing Page 15
-75
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15-6


17 -
Valve stem seal
Replacing with cylinder head installed
Page 15
-90

18 -
Rubber/metal gasket
Always replace
19 -
Seal Always replace
20 -
Cylinder head Checking for distortion Page 15
-56
Reworking Page 15
-57
21 -
Exhaust valve
22 -
Inlet valve
23 -
Oil seal (Hall sensor end)
Always replace Page 15
-10
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15-58

Compression, checking


Test requirements:

Engine oil temperature at least 30 C.

Battery fully charged.

- Remove bolts -arrows- and remove engine cover panels -A...C-.

- Remove air duct -arrows-.
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15-89

- Measure clearance between cam and lifter.

Note:
If irregular valve noise occurs repeatedly during short journeys and
disappears after extended driving, the oil check valves must be replaceed
Page 17
-12
. - Push lifter down with a wooden or plastic wedge. If a 0.20 mm feeler
gauge can then be inserted between camshaft and lifter, replace lifter:
removing and installing camshafts and camshaft adjuster Page 15
-
75

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