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Audi Workshop Service and Repair Manuals

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Checking valves > < Reworking valve seats

A3 Mk1

4-cyl. Diesel Direct Injection Engine (TDI), Mech. Components
Servicing valve gear
Checking valve guides
 
W00-0037

Special tools and workshop equipment required

  • ◆ Universal dial gauge bracket VW 387
  • ◆ Dial gauge
 
V15-0133

Test sequence

  • ‒ → Set valve in guide. The end of the valve stem is flush with guide.
  • ‒ Determine rock.

Wear limit

Inlet valve guide

Exhaust valve guide

1.30 mm

1.30 mm

Notes:

  • ◆ If the wear limit is exceeded, repeat the measurement with new valves. If the wear limit is again exceeded, renew the cylinder head. The valve guides cannot be replaced.
  • ◆ If the valve must be renewed as part of a repair, use a new valve for the calculation.

Checking valves > < Reworking valve seats