Doosan GL08K, Руководство по эксплуатации и техническому обслуживанию

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Maintenance - 94 -

Check the inside of combustion
chamber for foreign substances, and
carefully mount the cylinder head
assembly in the block by aligning the
dowel pin with the dowel pin hole.

Be careful not to damage the cylinder
head gasket. If the dowel pin is not in
alignment, lift the cylinder head again
and then remount it.
CAUTION:
After tightening the cylinder head bolts, even at disassembling, the cylinder head gasket
should be changed a new one.

Coat the cylinder head bolts with engine
oil, and tighten in proper sequence to
the specified torque according to bolt
tightening order. (refer to the figure).

However, before tightening bolts, the side parallel degree between cylinder heads should be
adjusted.
<Tightening order>
(1) First stage : Tighten 1 ~ 2 threads with hands.
(2) Second stage : Tighten at about 6 kg
•
m with a wrench.
(3) Third stage : Tighten at rotating angle method 90° with a wrench.
(4) Fourth stage : Tighten at rotating angle method 90° with a wrench.
(5) Fifth stage : Tighten at rotating angle method 90° with a wrench.
(6) Sixth Stage : Finally, tighten at rotating angle method 60° with a torque wrench.

However, all bolts are tightened simultaneously by above steps.

Coat the push rod with engine oil and insert it into the push rod hole.
EAMD102I
4 1 8 6
5 3 2 7
4 1 8 6
5 3 2 7
4 1 8 6
5 3 2 7
ED4OM031
Front side Rear side
Specification
M14 × 1.5 × 146
Torque
1st Tightening : 6 kg
•
m
2nd Tightening : 90°
3rd Tightening : 90°
4th Tightening : 90°
Final tightening : 90°
08TIS