Crankshaft; Balancer Drive Gear And Balancer Gear - Yamaha XT 600 AC Service Manual

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INSPECTION AND REPAIR
ENG ~ . .
4-39
CRANKSHAFT
1. Measure:
-Crank width
®
Out of specification --> Replace crankshaft.
Crank width :
74.95 ....... 75 .00 mm
(2.950 ....... 2 . 953 in)
-Runout
@
Out of specification --> Replace crankshaft
and ! or bearing.
~ ~unout
limit:
r
A.l
0.03 mm (0.001 in)
- Small end free play
©
Out of specification --> Replace big end bear-
ing, crank pin and ! or connecting rod.
Small end free play:
0.8 mm (0.031 in)
- Side clearance
©
Out of specification--> Replace connecting
rod.
Big end side clearance:
0.35"-'0 .65
mm
(O.014"-'0.026
in)
Crankshaft reassembling point:
The crankshaft
CD
and the crank pin
®
oil
passages must be properly interconnected with
a tolerance of less than 1 mm (0 .04 in) .
BALANCER DRIVE GEAR AND BALANCER
GEAR
1. Inspect :
• Balancer drive gear teeth
CD
• Balancer gear teeth
®
Wear / Damage --+ Replace both gears .