Linhai ARCHON 400, Service Manual

Page: 79 / 218

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