Removing/Checking The Rear Shock Absorber Assembly; Removing/Checking The Swingarm - Yamaha YZF-R25 Service Manual

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SWINGARM AND REAR SHOCK ABSORBER ASSEMBLY
EAS31304
REMOVING THE REAR SHOCK ABSORBER
ASSEMBLY
1. Stand the vehicle on a level surface.
EWA13120
WARNING
Securely support the vehicle so that there is
no danger of it falling over.
TIP
Place the vehicle on a suitable stand so that the
rear wheel is elevated.
EAS31305
CHECKING THE REAR SHOCK ABSORBER
ASSEMBLY
1. Check:
• Rear shock absorber rod
Bends/damage → Replace the rear shock
absorber assembly.
• Rear shock absorber assembly
Oil leaks → Replace the rear shock absorber
assembly.
• Spring
Damage/wear → Replace the rear shock ab-
sorber assembly.
• Bolts
Bends/damage/wear → Replace.
EAS31306
REMOVING THE SWINGARM
1. Stand the vehicle on a level surface.
EWA13120
WARNING
Securely support the vehicle so that there is
no danger of it falling over.
TIP
Place the vehicle on a suitable stand so that the
rear wheel is elevated.
2. Measure:
• Swingarm side play
• Swingarm vertical movement
▼▼▼
▼ ▼▼▼
▼ ▼▼▼
a. Measure the tightening torque of the pivot
shaft nut.
Pivot shaft nut
115 Nm (11.5 m·kgf, 83 ft·lbf)
b. Check the swingarm side play "A" by moving
the swingarm from side to side.
If the swingarm has side-to-side play, check
the spacer, bearings, and dust covers.
c. Check the swingarm vertical movement "B"
by moving the swingarm up and down.
▼ ▼▼▼
▼ ▼▼▼
▼ ▼▼▼
If the swingarm vertical movement is not
smooth or if there is binding, check the pivot
shaft, spacer, bearings, and dust covers.
▲▲▲
▲ ▲▲▲
3. Remove:
• Swingarm
EAS31307
CHECKING THE SWINGARM
1. Check:
• Swingarm
Bends/cracks/damage → Replace.
2. Check:
• Pivot shaft
Roll the pivot shaft on a flat surface.
Bends → Replace.
EWA13770
WARNING
Do not attempt to straighten a bent pivot
shaft.
3. Wash:
• Pivot shaft
▼▼▼
• Dust covers
• Spacer
• Bearings
4. Check:
• Dust covers "1"
• Spacer "2"
Damage/scratches → Replace.
4-76
B
A
▲ ▲▲▲
▲ ▲▲▲
▲ ▲▲▲
Recommended cleaning solvent
Kerosene
▲ ▲▲▲
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