Doosan DE08TS Disassembly/Assembly page 53

2
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3. Remove tool (A) and the hoist. Put engine oil on
the bolt threads and then install bolts (1) that hold
the cylinder head in place.
4. Tighten bolts (1) as follows :
a. Tighten all bolts in number sequence to a torque of
100 N � � m (74 lb � � ft).
b. Tighten all bolts in number sequence to a torque of
180 N � � m (133 lb � � ft).
c. Again tighten all bolts in number sequence to a
torque of 220 N� � m (163 lb� � ft).
NOTE : After engine has run at normal temperature
of operation for a very short time, tighten all bolts
again to the final torque. Rocker shaft assembly has
to be removed and valves have to be adjusted again.
End By :
a. Install rocker shaft and push rods.
b. Install cylinder head cover.
c. Install exhaust manifold.
d. Install intake manifold.
e. Install air cleaner.
DE08TS Diesel Engine
Disassemble Cylinder Head
1
A17429-07
Start By :
a. Remove cylinder head
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1. Apply cylinder number mark to the head of each
valve.
2 . Install tool (A) on the cylinder head.
3. Compress the valve springs and remove valve
cotters (1), spring retainer (2) and springs (3).
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4. Remove valve (4), stem seal and spring seat.
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Tools Needed
Valve Spring Compressor
Valve Spring Tester
Valve Guide Installer
1
4
Disassembly and Assembly
A B C
1
1
1
2
3