MTU Gas engine8 V 4000 L62 Operating Instructions Manual page 58

Installing spark plug
1. Remove dust and deposits from ignition line
on side facing spark plugs so that perfect is
achieved when reused.
2. Install a new lower gasket in the ignition
line.
3. Check spark plug connector and ignition ca‐
ble for perfect condition and replace any
damaged parts.
4. Clean mating faces on spark plug, sealing
ring and cylinder head.
5. Apply thin coat of assembly compound to
spark plug.
6. Fit new sealing ring (2) on spark plug (1),
positioning it correctly.
7. Screw spark plug into cylinder head.
Note: The temperature of spark plug and cylinder head must be the same prior to tightening.
8. Tighten spark plug to specified tightening torque using a torque wrench.
Name
Spark plug
9. Fit spark plug connector with ignition cable on spark plug.
10. Install locking plates on cylinder head cover.
11. Install ignition cable on ignition coil.
58 | Task Description | MS150032/02E 2012-07
Size Type
M18 x 1.5 Tightening torque
Lubricant Value/Standard
(Assembly compound 50 Nm
(Molykote P 37))