Yamaha SRX440 1980 Service Manual page 12

1980 SRX440
b. Check oil seal lips for damage and wear.
Replace as required.
3. Bearing and oil seal installation
a. When installing or removing left crank
oil seal and bearing. remove the pump
drive gear and install new drive gear.
Crank bearing Yamalube 2-cycle oil
Crankshaft oil seal
Low temperature grease
lip
(Esso Beacon 325 or
Aerosheli grease #7 AI
4. Crankshaft inspection
a. Check connection rod axial play at small
end (to determine. the amount of wear
of crank pin and bearing at big end).
If small end play exceeds tolerance. dis-
assemble the crankshaft. check con-
necting rod. crank pin and big end bear-
mg.
Replace defective parts. Play after reas-
sembly should be within specification.
Rod axial play:
Maximum 2.0 mm (0.079 in)
Rod side clearance
b. Check the connecting rod side clear-
ance at big end.
If axial play exceeds tolerance. disas-
semble the crankshaft and replace any
worn parts. Big end axial play should be
within specification.
CAUTlON:---------...,
When removing pump drive gear. re-
place it with new one.
b. Install bearing(s) with their manufac-
turer's marks or. numbers facing out-
ward. (In other words. the stamped let-
ters must be on the exposed-
to-view-side.)
c. Install oil sealts) with their manufac-
turer's marks or numbers facing out-
ward.
d. When installing bearing(s) or oil seatts).
apply the specified lubrication.
2-6
Minimum
0.25 mm (0.010 inl
Maximum
0.75 mm 10.030 in)