Valve Clearance - Check And Adjustment - MTU 12V4000L32F Operating Instructions Manual

7.4.2 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
Feeler gauge
Angular screw driver
Torque wrench, 60–320 Nm
Socket wrench, 24 mm
Engine oil
Preparatory steps
1. Remove cylinder head cover (→ Page 183).
2. Install barring device (→ Page 163).
3. Rotate crankshaft with barring device in en-
gine direction of rotation until marking "OT"
and pointer are aligned.
Diagram for 12/16 V engines – Two crankshaft positions
Position
12 V
Firing TDC in cylinder A1
Overlap TDC in cylinder A1
Inlet: Valve clearance adjustment of inlet valve is permitted
I
X Exhaust: Valve clearance adjustment of exhaust valve is permitted
Valve clearance adjustment is not permitted
–
180 | Valve Drive | MS150104/03E 2017-09
Cylinder 1 2
Bank A I X I – – X
Bank B – X I X I –
Bank A – – – X I –
Bank B I – – – – X
Part No.
Y20098771
F30452765
F30452768
F30029815
3 4 5 6 7
I – – X – –
– X – – I –
– X I – I X
I – I X – X
Qty.
1
1
1
1
8 9 10