Linhai HY740STL 2018 Service Manual page 88

CHAPTER 3 ENGINE
6 Bolt M10x1.25x25
7 Crankshaft assy.
8 Initiative sprocket oil pump
9 Front balance shaft
10 Rear balance shaft
11 Crank balancer drive gear
12 Crank balancer driven gear B
13 Crank balancer driven gear A
CRANKSHAFT INSPECTION
1. Measure:
⚫Crankshaft runout
Out of specification → Replace
and/or bearing.
NOTE:
Measure the crankshaft runout with the
crankshaft assembly running slowly.
Runout limit:
2. Measure:
⚫Big end side clearance
Out of specification →
bearing, crank pin and/or connecting rod.
Big end side clearance:
0.35-0.80 mm
crankshaft
0.03 mm
Replace big end
Apply Loctite 243(Blue)
2
Tightening torque:55N.m
1
1
1
1
Align the punch mark as shown in the figure.
1
1
1
CHAPTER 3 ENGINE PAGE 3-
M750L SERVICE MANUAL 18.0
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