3.1.26 Cylinder head
Remove the cylinder head bolts in the reverse order of
tightening but remove it step by step.
First step : Loosen 1 ~ 2 threads
Second step : Remove by loosening fully.
However, remove the total bolts simultaneously by the
step of 1 and 2.
Lay the removed bolts orderly not to damage the threads
at all and store.
Caution:
Prevent a collision between the bolt thread each
other.
Take out the cylinder head gasket and scrap it.
Remove the foreign residues from the cylinder head
surface and block surface.
Caution:
Try not to make any damage on the contact surfaces.
Disassembly of cylinder head
Place the cylinder head on a individual shelf.
As pressing the valve spring with a special tool, remove
the cotter pin, valve spring.
Take out the intake and exhaust valves.
For removal of the valve seat, apply arc welding work to
two points of valve seat insert, and pull out the valve seat
insert with inner extractor.
5ton Diesel Engine SPC000006
Page 37
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