DE08TS Diesel Engines Maintenance
c. Tappet and push rod
• Clearance
Measure the clearance of the tappet and tappet
holes of the cylinder block. If the value is beyond the
specified limit, replace tappets.
• 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 damaged. If the amount of cracks or pitting
is small, correct with an oil stone or grinding paper.
• Outside diameter of tappet
With an outside micrometer, measure the tappet out-
side diameter If the measured 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.
d. Reassembling rocker arm assembly
Reassembling can be done in the reverse order of
disassembling and following things should be heed-
ed
• Check the oil supply hole of rocker arm shaft for
any clog and clean thoroughly.
• Be careful not to occur any swap of position and
reverse assembly.
Camshaft
1. Camshaft end play
• Push the thrust plate toward the cam gear
• With a feeler gauge, measure the clearance
between the thrust plate and camshaft journal.
• If the end play is excessive, replace the thrust
plate.
EA0M4073
Feeler gauge
EDM2061I
EA0M4070
(1) Unevenness
(4) Abnormal
(2) Crack (3) Normal
42
Standard Limit
0.035 ~ 0.077 mm 0.15 mm
Standard
N
19.944 ~
N
19.965 mm
Limit 0.3 mm or less
Standard Limit
0.28~ 0.43 mm 0.6 mm
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