Adjusting Valve Clearance - MTU 12 V 4000 G73 Operating Instructions Manual

Adjusting valve clearance

1. Release locknut (1).
2. Insert feeler gauge (3) 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 (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 84).
2. Install cylinder head cover (→ Page 97).
96 | Task Description | MS150029/02E 2013-03
Size Type
M16 x 1.5 Tightening torque
Lubricant Value/Standard
(Engine oil) 90 Nm +9 Nm