Disassembling The Water Pump; Checking The Water Pump - Yamaha YZF-R1S Service Manual

WATER PUMP
EAS00471

DISASSEMBLING THE WATER PUMP

1. Remove:
S water pump seal 1
NOTE:
Tap out the water pump seal from the inside of
the water pump housing.
2 Water pump housing
2. Remove:
S oil seal 1
S bearing 2
NOTE:
Tap out the bearing and oil seal from the outside
of the water pump housing.
3 Water pump housing
3. Remove:
S rubber damper holder 1
S rubber damper 2
(from the impeller, with a thin, flat-head
screwdriver)
NOTE:
Do not scratch the impeller shaft.
EAS00473

CHECKING THE WATER PUMP

1. Check:
S water pump housing cover 1
S water pump housing 2
S impeller 3
S rubber damper 4
S rubber damper holder 5
S water pump seals
S oil seal
Cracks/damage/wear ! Replace.
2. Check:
S bearing
Rough movement ! Replace.
3. Check:
S water pump outlet pipe
Cracks/damage/wear ! Replace.
6-14
COOL