Linhai ARCHON 400 Service Manual page 79

CHAPTER 3 ENGINE
BUCK 450 SERVICE MANUAL 20.0
CRANKSHAFT&BALANCER REMOVAL
1. Remove:
Crankshaft assembly
Balancer assembly
Timing chain
NOTE:
Before removing the crankshaft assembly,
remove the timing chain from the crankshaft
sprocket.
If the timing chain hooks to the crankshaft
sprocket, the crankshaft cannot be removed.
CRANKSHAFT INSPECTION
1. Measure:
Crankshaft runout
Out of specification → Replace
crankshaft
and/or bearing.
NOTE:
Measure the crankshaft runout with the crankshaft
assembly running slowly.
Runout limit:
0.03 mm
2. Measure:
Big end side clearance
Out of specification → Replace big end bearing,
crank pin and/or connecting rod.
Big end side clearance:
0.35-0.85 mm
3. Measure:
Crank width
Out of specification → Replace crankshaft.
Crank width:
59.95-60.00 mm
CHAPTER 3 ENGINE PAGE. 3- 54