Water Pump - Yamaha WR450F Owner's Service Manual
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Also See for WR450F:
- Owner's manual (98 pages) ,
- Supplementary owner's service manual (28 pages) ,
- Owner's service manual (795 pages)
Table of Contents
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REMOVING THE OIL SEAL
EAS2GC1333
TIP
• Remove the oil seal when the coolant level
changes frequently more than usual, coolant
has discolored, or engine oil has become
milky.
• Do not use the removed oil seal.
1. Remove:
• Oil seals "1"
1
CHECKING THE WATER PUMP
EAS2GC1334
1. Check:
• Water pump housing cover
• Impeller shaft
Cracks/damage/wear Replace.
CHECKING THE BEARING
EAS2GC1335
1. Check:
• Bearing
Rotate the inner race with your finger.
Rough spot/seizure Replace.
INSTALLING THE OIL SEAL
EAS2GC1336
1. Install:
• Oil seals "1"
New
TIP
• Apply the lithium-soap-based grease on the
oil seal lip.
• Install the oil seal with its manufacture's
marks or numbers facing the right crankcase
cover "2".
New
1
LS
2. Install:
• Bearing "1"
TIP
Install the bearing by pressing its outer race
parallel.
1
ASSEMBLING THE WATER PUMP
EAS2GC1337
1. Install:
• Impeller shaft assembly "1"
• Pin "2"
• Collar "3"
• Circlip "4"
TIP
• Take care so that the oil seal lip is not dam-
aged or the spring does not slip off its posi-
tion.
• When installing the impeller shaft, apply the
engine oil to the oil seal lip, the bearing, and
the impeller shaft.
1
7-5
WATER PUMP
2
LS
New
2
E
1
New
4
New
3
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