Mercedes-Benz OM 904-926 LA BlueTec, Руководство по эксплуатации

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X
Clean very dirty cylinder head covers
before removal.
X
Remove engine ventilation hose
:
from
cylinder head cover
;
.
X
Remove cylinder head cover
;
.
X
Remove seal
A
between the cylinder head
cover and the cylinder head.
X Clean the sealing surfaces of the cylinder
head cover and the cylinder head.
Example: flywheel inspection hole
X Unscrew the cap from the inspection hole
in the flywheel housing.
X
Fit the 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/valves to be
adjusted
1 2 3 4 5 6
4th cylinder
valve over-
lap I/
E I A -
1st cylinder
valve over-
lap - A I I/
E
I – inlet valve
E – exhaust valve
Valve clearance setting OM 906/926 LA
Crankshaft
position
Cylinder/valves to be
adjusted
1 2 3 4 5 6
6th cylinder
valve over-
lap I/
E I A I A -
1st cylinder
valve over-
lap - A I A I I/
E
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
Turn cylinder no. 1 to TDC valve overlap
(cylinder no. 6 at ignition TDC).
X
Check and adjust the valve clearance of all
valves in accordance with the table above.
Checking and adjusting the valve clear-
ance
Work schedules
65
Notes on maintenance
Z