Yamaha VT700F, Service Manual

Page: 346 / 589

5-18
ENG
OIL PUMP, CRANKCASE AND CRANKSHAFT
INSPECTION
1. Measure:
•
Runout
Use the V-blocks and a dial gauge.
Out of specification
→
Replace or repair the
crankshaft.
Dial gauge:
90890-03097, YU-03097
Maximum runout:
C
1
: 0.03 mm (0.0012 in)
C
2
~ C
5
: 0.04 mm (0.0016 in)
C
6
: 0.03 mm (0.0012 in)
a
90 mm (3.54 in)
b
85 mm (3.35 in)
2. Measure:
•
Small end free play
a
Use the dial gauge.
Out of specification
→
Replace the defective
parts.
Small end free play:
a
0.8 ~ 1.0 mm (0.03 ~ 0.04 in)
•
Big end side clearance
b
Use the thickness gauge.
Out of specification
→
Replace the defective
parts.
Big end side clearance:
b
0.25 ~ 0.75 mm (0.01 ~ 0.03 in)
3. Inspect:
•
Crankshaft bearing 1
Pitting/damage
→
Replace.
•
Stopper ring
2
Bends/damage
→
Replace.
•
Crankshaft oil seals 3
•
Impeller drive gear teeth
4
Wear/damage
→
Replace.
CAUTION:
Lubricate the bearings immediately after examin-
ing them in order to prevent rust.
SCH5400
SCH5410
SCH5420