Disassembling The Water Pump; Checking The Water Pump - Yamaha XT660R S Service Manual

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WATER PUMP
EAS00470

DISASSEMBLING THE WATER PUMP

1. Remove:
• water pump seal 1
NOTE:
_
Tap out the water pump seal from water pump
housing in the direction of the arrow shown.
2 Water pump housing
2. Remove:
• bearing 1
• oil seal 2
NOTE:
_
Tap out the bearing and oil seal from water
pump housing in the direction of the arrow
shown.
3 Water pump housing
3. Remove:
• rubber damper holder 1
• rubber damper 2
(from the impeller, with a thin, flat-head
screwdriver)
NOTE:
_
Do not scratch the impeller shaft.
EAS00474

CHECKING THE WATER PUMP

1. Check:
• water pump housing cover 1
• water pump housing 2
• impeller 3
• rubber damper 4
• rubber damper holder 5
Cracks/damage/wear → Replace.
2. Check:
• water pump seal
• oil seal
Cracks/damage/wear → Replace.
3. Check:
• bearing
Rough movement → Replace.
4. Check:
• impeller shaft gear
Pitting/wear → Replace.
COOL