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Valve guides, checking Audi A8 D3 рестайлинг 2

4.2l v8 4v Engine Mechanical, Engine Code(s): Bvj 1 illustration ~105 words

Valve guides, checking

Special tools, testers and auxiliary items required

  1. Dial gauge holder VW 387
  1. Dial gauge VAS 6079

Work procedure

Note. If valve is replaced during repair, use new valve for measurement. Due to different stem diameters, only use an intake valve in the intake guide and an exhaust valve in the exhaust guide. Insert valve into valve guide. Valve stem tip must seal with valve guide.

Scheme 262

Scheme 262
Scheme 262
  1. Determine tilt clearance.
  1. Wear limit: 0.8 mm.
  1. If wear limit is exceeded, re-measure using new valves.
  2. If wear limit is still exceeded, replace cylinder head.

Note. The valve guides cannot be replaced.