6.3 Valve Drive
6.3.1 Valve clearance – Check and adjustment
Preconditions
☑ Engine is stopped and starting disabled.
☑ Engine coolant temperature is max. 40 °C.
☑ Valves are closed.
Special tools, Material, Spare parts
Designation / Use
Part No.
Qty.
Feeler gauge
Y4345893
1
Barring device
F6783914
1
Ratchet
F30006212
1
Double-head box wrench
F30002800
1
Ring socket, 19 mm
F30038493
1
Torque wrench, 10-60 Nm
F30510423
1
WARNING
Valve gear is moving.
Risk of crushing!
• Keep hands clear of the danger zone when barring the engine.
Preparatory steps
u
Remove cylinder head cover (→ Page 47).
Positioning A1 piston at TDC
1.
Install barring device.
2.
Release plug screw (1) and remove.
3.
Using ratchet and barring device, rotate
crankshaft in engine direction of rotation un‐
til the bore (2) on the flywheel is visible in
the center of the exposed opening.
44 | Task Description | MS150095/01E 2012-08
TIM-ID: 0000023895 - 003
