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Doosan D1146 - Page 90

Doosan D1146
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Visual check of tappet
Visually check the face of the tappets in
contact with the cam for pitting, scores
or cracks, and replace if severely dam-
aged. If the amount of cracks or pitting is
small, correct with an oil stone or grind-
ing paper.
Outside diameter of tappet
With an outside micrometer, measure
the tappet outside diameter If the mea-
sured value is beyond the limit, replace
tappets.
Push rod run-out
Use a feeler gauge to measure the push
rod run-out.
Roll the push rod along a smooth flat
surface as shown in the figure.
4) Reassembling rocker arm assembly
Reassembling can be done in the reverse
order of disassembling and following things
should be heeded
Check the oil supply hole of rocker arm
shaft for any clog and clean thoroughly.
Be careful not to occur any swap of posi-
tion and reverse assembly.
- 86 -
EA0M4070
(1) Unevenness
(4) Abnormal
(2) Crack (3) Normal
EDM2061I
Standard 19.944 ~ 19.965 mm
Limit 0.3 mm or less
EA0M4073
Feeler gauge

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