Connecting Rod - Yanmar 3JH3E Service Manual

Chapter 2 Basic Engine
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4. Connecting Rod
The connecting rod is made of high-strength forged car•
bon steel.
The large end with the aluminium metal can be separated
into two and the small end has a 2-layer copper alloy coil
bushing.
Connecting rod
(big end cap)
Connecting rod bolt
4-1 Inspecting the connection rod
4-1.1 Twist and parallelism of the large and small ends
Insert the measuring tool into the large and small ends of
the connecting rod. Measure the extent of twist and paral-
lelism and replace
if
they exceed the tolerance.
Printed in Jap:in
HINSHI-H8009
2-15
Measuring
twist and
parallelity
Connecting rod
twist and parallelity
Standard
less than 0.05
(at 100mm)
4-1.2 Checking thrust clearance
mm
Wear limit
0.07
Fit the respective crank pins to the connecting rod and
check to make sure that the cfearance in the crankshaft
direction is correct
Connecting rod
side
clearance
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;
Standard
0.20~0.40
Feeler gauge
mm
Wear
limit
0.55