Removing The Bearing; Checking The Rear Shock Absorber Assembly; Checking The Connecting Arm And Relay Arm; Installing The Relay Arm - Yamaha YZ450FF 1SL-28199-11 Owner's Service Manual

REMOVING THE BEARING

EAS1SL5181
1. Remove:
• Stopper ring (upper bearing) "1"
TIP
Press in the bearing while pressing its outer
race and remove the stopper ring.
2. Remove:
• Upper bearing "1"
TIP
Remove the bearing by pressing its outer race.
3. Remove:
• Lower bearing "1"
TIP
Remove the bearing by pressing its outer race.
REAR SHOCK ABSORBER ASSEMBLY
CHECKING THE REAR SHOCK ABSORBER
EAS1SL5182
ASSEMBLY
1. Check:
• Rear shock absorber rod
Bends/damage  Replace the rear shock
absorber assembly.
• Rear shock absorber
Gas leaks/oil leaks  Replace the rear
shock absorber assembly.
• Spring
Damage/wear  Replace.
• Spring guide
Damage/wear  Replace.
• Bearing
Damage/wear  Replace.
• Bolts
Bends/damage/wear  Replace.
CHECKING THE CONNECTING ARM AND
EAS1SL5183
RELAY ARM
1. Check:
• Connecting arm
• Relay arm
Damage/wear  Replace.
2. Check:
• Bearing
• Spacers
Damage/pitting/scratches  Replace the
bearings and spacers as a set.
3. Check:
• Oil seals
Damage/pitting  Replace.

INSTALLING THE RELAY ARM

EAS1SL5184
1. Lubricate:
• Oil seals
• Bearing
• Spacers
• Washers
• Collars
2. Install:
• Bearing "1"
• Washer "2"
1
• Oil seals "3"
(to relay arm "4")
4-59
Recommended lubricant
Molybdenum disulfide grease
New
Installed depth "a"
0 mm (0 in)