MAINTENANCE MANUAL OF ENGINE
59
4.3.2 Installing the connecting rod bushing
Inspection:
◆
Check whether connecting rod is deformed.
Note: Big end of connecting rod and small end
bearing bore must be flat and parallel. Check the
two sides of connecting rod axis and the result shall
not exceed +/-0.25mm limit. After installing small
end bushing, the limit is+/-0.06mm.
◆
Check whether small end bushing is worn or
damaged; replace it with new ones when necessary.
◆
Clean the connecting rod bore and clear all the
sharp edges.
Install connecting rod bushing into small end of
connecting rod.
A-Connecting rod body
B-Connecting rod bushing
Pay attention to the installation process of connect-
ing rod bushing B:
Replace new connecting rod bushing
--
squeeze ex-
panding bushing bore
--
bore bushing bore
--
hone
bushing bore. The distance between small end
bushing bore of connecting rod and big head basic
bore center shall conform to requirement. The key
is to realize locating boring bushing bore.
Press new connecting rod bushing to make sure that
lubrication hole in axle sleeve is at the same side
with lubrication hole of connecting rod top for
alignment.
Connecting rod bushing shall be finished by profes-
sional technicians. It is prohibited to assemble
without permission.
A
B
Summary of Contents for KM/4L22
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