1999 AUDI A4 oil

15-69

- Position camshafts together with drive chain and
camshaft adjuster on cylinder head.

- Oil running surfaces of both camshafts.

Note:

Dowel sleeves for bearing caps and camshaft
adjuster must be located in cylinder head.
When installing bearing caps ensure that the
identification mark is readable from the intake
side of the cylinder head.

- Tighten mountings of camshaft adjuster (watch
position of dowel sleeves).

- Tighten bearing caps 2 and 4 of intake and exhaust camshafts in
stages and in diagonal sequence (watch position of dowel sleeves).
- Install two bearing caps next to chain sprockets on intake and exhaust
camshafts.
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15-74

Hydraulic valve lifters, checking


Special tools and equipment

Feeler gauge
Wood or plastic wedge

Note:
Hydraulic valve lifters cannot be adjusted or
repaired.
Irregular valve noise during starting is normal.

Test sequence

- Start engine and let run until coolant
temperature has reached approx. 80 C.

- Increase engine speed to about 2500 rpm for 2
minutes (perform road test if necessary).

Note:
If the irregular valve noises stop but recur
repeatedly during short journeys, a new oil
retention valve must be fitted. Oil retention valve
location: In oil filter bracket -Item 6 -, Page
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15-83

Installing

Note:
A plastic sleeve -A- is enclosed with new valve
shaft seals.

- To prevent damage to new valve stem seals -B-, place plastic sleeve -
A- on valve stem.
- Lightly oil sealing lip of valve stem seal.
- Push valve stem seal onto plastic sleeve.
- Carefully press valve stem seal onto valve guide using presser tool
3365.
- Remove plastic sleeve again.

Note:
The large diameter of the valve keepers points upward. - If valve keepers were taken out of assembly cartridge they must first be
inserted into tool VAS 5161/18.
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