Adjusting Valve Clearance - MTU 12 V 4000 M93 x Operating Instructions Manual

Adjusting valve clearance

1. Release locknut (1).
2. Insert feeler gauge (3) between valve
bridge and rocker arm.
3. Use Allen key to set adjusting screw (2) so
that the specified valve clearance is estab-
lished.
4. Feeler gauge (3) must just pass through
gap.
5. Tighten locknut (1) with torque wrench to the specified tightening torque, holding the adjusting
screw (2) to prevent it from turning.
Name
Locknut
6. Replace or rectify adjusting screws and/or locknuts which do not move freely.
7. Check valve clearance.
Final steps
1. Remove barring device (→ Page 127).
2. Install cylinder head cover (→ Page 138).
Size Type
M16 x 1.5 Tightening torque
Lubricant
(Engine oil)
MS150047/04E 2013-07 | Task Description | 137
Value/Standard
90 Nm +9 Nm