Doosan GL08K, Руководство по эксплуатации и техническому обслуживанию

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Maintenance - 67 -
3.2.5. Rocker arm assembly
1) Disassembly

Disassemble the snap rings that are
located at both ends of rocker arm
shaft by a plier.

Disassemble in the order of washer,
rocker arm bracket, rocker arm
spring, rocker arm.
2) Inspection of rocker arm assembly
a) Rocker arm shaft

Rocker arm shaft run-out
Place the rocker arm shaft on two
V blocks and inspect the shaft for
bend using a dial gauge.
If the amount of this run-out is
small, press the shaft with a bench
press to correct the run-out.
Replace the shaft if the measured
value exceeds the limit.

Rocker arm shaft diameter
With an outside micrometer,
measure the rocker arm shaft
diameter at the point where the
rocker arms have been installed.
Replace the rocker arm if the
amount of wear is beyond the
specified limit.
b) Rocker arm

Visual check
Visually check the face of the rocker arm in contact with the valve stem end for scores and
step wear. If the wear is small, correct it with an oil stone or grinding paper of fine grain size.
Rocker arm with a considerable amount of step wear should be replaced.
EA8M3008
EDM2037I
Limit 0.2 mm
EA9M3014
Standard Limit
23.939 ~ 23.960 mm 23.9mm