Checking The Ball Joints - Yamaha YFZ450S 2003 Service Manual

FRONT ARMS AND FRONT SHOCK ABSORBER
ASSEMBLIES
EBS00472

CHECKING THE BALL JOINTS

The following procedure applies to both of the
front arm ball joints.
1. Check:
• ball joint (upper front arm)
Damage/pitting → Replace the upper front
arm.
Free play → Replace the front arm.
Turns roughly → Replace the upper front
arm.
2. Check:
• ball joint (lower front arm)
Damage/pitting → Replace the ball joint.
Free play → Replace the ball joint.
Turns roughly → Replace the ball joint.
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a. Clean the outside of the lower front arm.
b. Remove the circlip 1, boot retaining ring 2
and rubber boot 3.
Use the ball joint remover and installer set.
Ball joint remover/installer set
P/N. YM-01474, 90890-01474
Ball joint remover/installer attach-
ment set
P/N. YM-01480, 90890-01480
4
Body
5
Long bolt
6
Base
Remover
7
attachment
8
Installer spacer
9
Installer washer
c. Install the body 4, long bolt 5, base 6 and
attachment 7 onto ball joint.
d. Hold the body 4 in place while turning in
the long bolt 5 to remove the ball joint 0
from the lower front arm A.
e. Remove the ball joint remover/installer.
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CHAS
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YM-01474
90890-01474
YM-01480
90890-01480
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