Yamaha YZ450FN 2022, Owner'S Service Manual, Page: 177 / 366

REAR SHOCK ABSORBER ASSEMBLY
4-63
EAM30068
CHECKING THE CONNECTING ARM AND
RELAY ARM
1. Check:
• Connecting arm
•
Relay arm
Damage/wear

Replace.
2. Check:
• Bearing
•
Collar
Damage/pitting/scratches

Replace the
bearings and collars as a set.
3. Check:
•
Oil seal
Damage/pitting

Replace.
EAM30069
INSTALLING THE RELAY ARM
1. Lubricate:
•
Oil seal
• Bearing
•
Washer
• Collar
2. Install:
• Bearing “1”
•
Washer “2”
• Oil seal “3”
(into the relay arm “4”)
3. Install:
•
Bearing “1”
• Oil seal “2”
(into the connecting arm “3”)
EAM30070
INSTALLING THE REAR SHOCK
ABSORBER ASSEMBLY
1. Lubricate:
• Bearing (lower side)
•
Dust seal
NOTICE
ECA24580
Do not apply the grease to the bearing outer
race because it will wear the rear shock ab-
sorber surface on which the bearing is press
fitted.
2. Lubricate:
• O-ring
3. Install:
• Bushing
•
Stopper ring
(into the rear shock absorber assembly (up-
per side))
TIP
• Install the bushing parallel until the stopper ring
groove appears by pressing its outer race.
• After installing the stopper ring, push back the
bushing until it contacts the stopper ring.
4. Install:
• Bearing “1”
•
Bushing “2”
• Collar “3”
•
Dust seal “4”
(into the rear shock absorber assembly (low-
er side))
TIP
Install the dust seals with their lips facing inward.
Recommended lubricant
Molybdenum disulfide grease
Installed depth “a”
0 mm (0 in)
Installed depth “a”
0 mm (0 in)
Ne w
3
3
4
3
2
2
2
2
a
1
1
1
Ne w
Recommended lubricant
Molybdenum disulfide grease
Recommended lubricant
Lithium-soap-based grease
3
a
1
1
2
a
2
Ne w