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.
Caution:
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 of bolts by steps>
(1) First stage: Coat the bolts with engine oil.
(2) Second stage: Tighten 1 ~ 2 threads with hands.
(3) Third stage: Tighten at about 6 kg.m with a wrench.
(4) Fourth stage: Tighten at rotating angle method 180° with a wrench.
(5) Fifth stage: Finally, tighten at rotating angle method 150° 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.
SPC000006 5ton Diesel Engine
Page 80
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