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Bearings/oil Seals; Bearing Replacement; Bearing Wear Inspection - Kawasaki KX450F Service Manual

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  • Contents

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9-34 CRANKSHAFT/TRANSMISSION

Bearings/Oil Seals

Bearing Replacement

Do not remove the ball or needle bearings unless it
is necessary. Removal may damage them.
•
Using a press or puller, remove the ball bearing and/or
needle bearings.
○
In the absence of the above mentioned tools, satisfac-
tory results may be obtained by heating the case to ap-
proximately 93°C (200°F) max, and tapping the bearing
in or out
Do not heat the case with a torch. This will warp the
case. Soak the case in oil and heat the oil.
•
Using a press and the bearing driver set [A], install the
new ball bearing until it stops at the bottom of its housing.
○
The new needle bearings must be pressed into the
crankcase so that the end is flush with the end of the
hole.
Special Tool - Bearing Driver Set: 57001-1129

Bearing Wear Inspection

Do not remove the bearings for inspection. Re-
moval may damage them.
•
Check the ball bearings.
○
Since the ball bearings are made to extremely close toler-
ances, the wear must be judged by feel rather than mea-
surement. Clean each bearing in a high flash-point sol-
vent, dry it (do not spin the bearing while it is dry), and oil
it with engine oil to it.
○
Spin [A] the bearing by hand to check its condition.
If the bearing is noisy, does not spin smoothly, or has any
rough spots, replace it.
NOTICE
NOTE
NOTICE
NOTICE

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