Doosan GV158TIC, Operation & Maintenance Manual

Page: 68 / 162

Disassembly and Reassembly of Major Components - 62 -
3.2.9. Rocker arm
1) Rocker arm disassembling
●
Remove the snap rings in both ends of
rocker arm with a pair of pliers.
●
Tear down washer, rocker arm.
●
Disassemble the rocker arm bush by
means of a press.
2) Inspection rocker arm bracket
●
Measure the outer diameter of rocker
arm bracket with outside micrometer
at the position that the rocker arm is
installed, and in case that it exceeds
the limit value, replace.
●
Inspect the rocker arm surface that
contacts with the valve stem for any
scratch, step wear and correct the
minor degree of wear with an oil stone
or the fine grinding paper and replace
if they are severe.
EFM2091I
EA6M2003
Diameter
Standard Limit
Bush
inner dia.
ø25.005 ~
ø25.035 mm
ø25.325 mm
Shaft
outer dia.
ø24.967 ~
ø24.990 mm
ø24.930 mm
Clearance
0.015 ~
0.068 mm
0.14 mm