Doosan GL08K, Operation & Maintenance Manual

Page: 86 / 206

Maintenance - 80 -
3.3.5. Tappet and cam shaft

Undercool a new bush with dry ice for
about 2 hours and press it into position in
the cylinder block using a bench press.

After the pressing operation, measure the
inside diameter of the cam bush to check if
it is not deformed.

Apply engine oil to the entire face of the
tappets and slide them into the tappet
holes on the cylinder block.

Wet the cam bush inside diameter and
camshaft with oil, and carefully assemble
them while turning the camshaft.
CAUTION :
Be careful not to generate a damage to
camshaft and bush.

Check to see that the camshaft rotates
smoothly.
3.3.6. Crankshaft

Install the main bearing (refer to assemble
sequence : right figure) machined with
two holes in the cylinder block so that the
key is aligned with the key groove, then
apply oil to the bearing surface.
EAMD072S
EDM2060I
EFM2061I
7 5 3 1 2 4 6
EA0M4083
Oil port and passage
Key groove