Maintenance manual for sunray hfc4da1-2c china-IV diesel engines
32
l. Measure the free height of valve spring. If the
measurement is out of specified limit, make sure to
replace the spring.
The standard value is 0.05mm or less and the limit is
0.20mm.
m. Use a feeler gauge to measure the clearance between
piston ring groove and piston ring.
If the clearance between piston ring groove and piston
ring is out of specified limit, make sure to replace the
piston.
n. Use a feeler gauge to measure the opening gap of
piston ring.
If the opening gap of the piston ring is out of specified
limit, make sure to replace the piston.
o. Install the steel-strip oil ring.
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