MTU 20 V 4000 C22 Operations Instructions Page 73

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Adjusting valve clearance
1. Release locknut (1).
2. Insert feeler gauge between valve bridge
and rocker arm.
3. Using Allen key, set adjusting screw (2) so
that the specified valve clearance is provid-
ed.
4. Feeler gauge must just pass through the
gap.
5. Tighten locknut (1) to 90 +9 Nm, holding
adjusting screw (2) firm.
6. Replace or rectify adjusting screws and/or
locknuts which do not move freely.
7. Check valve clearance.
Final steps
1. Remove barring tool (→ Page 52).
2. Install cylinder head cover (→ Page 74).
M015675/06E 2013-04 | Task Description | 73
TIM-ID: 0000004355 - 001
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