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Work schedules
66
Example: flywheel inspection hole
X
Unscrew the cap from the inspection hole
in the flywheel housing.
X
Fit cranking device 904 589 04 63 00
(
Y
page 64) to the flywheel housing inspec-
tion hole. Tightening torque: 25 Nm.
Valve clearance setting
Valve clearance setting OM 904/924 LA
Crankshaft
position
Cylinder no.
4, valve
overlap
Cylinder no.
1, valve
overlap
I – inlet valve
E – exhaust valve
Cylinder/valves to be
adjusted
1
2
3
4
5
I/
I
E
-
E
-
E
I
I/
E
Valve clearance setting OM 906/926 LA
Crankshaft
position
Cylinder no.
6, valve
overlap
Cylinder no.
1, valve
overlap
I – inlet valve
E – exhaust valve
Adjust all valve clearances at two crankshaft
positions.
X
Use the cranking device to turn the crank-
shaft until cylinder no. 6 / cylinder no. 4 is
at TDC valve overlap (cylinder no. 1 at igni-
tion TDC).
X
Check and adjust the valve clearance in
accordance with the above table.
X
Turn cylinder no. 1 to TDC valve overlap
(cylinder no. 6 at ignition TDC).
X
Check and adjust the valve clearance in
accordance with the above table.
6
Checking and adjusting the valve clear-
ance
Cylinder/valves to be
adjusted
1
2
3
4
5
I/
I
E
I
E
E
-
E
I
E
I
6
-
I/
E
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