304
GEARCASE
WATER PUMP SERVICE
WATER PUMP SERVICE
Disassembly
Rotate the driveshaft counterclockwise to unlock
the impeller cam. Remove the four impeller hous-
ing screws.
Slide the water pump off the driveshaft. Remove
the impeller drive cam, O-ring, impeller plate, and
gasket. Discard the gasket.
Remove all the parts from the housing.
Inspection
Check impeller for overheating, hub separation,
and other wear or damage.
Check liner and wear plate for scoring, distortion,
and impeller material transfer.
Inspect the housing for cracks or melting.
Assembly
Apply a drop of Adhesive 847 in the seal ring
groove at each of the four ribs.
IMPORTANT: Do not allow any sealer to get
into the air bleed groove in the impeller housing. If
this groove is blocked by adhesive, the pump will
lose its prime and will not pump water.
Install the O-ring in groove in the impeller housing.
Lightly coat the exterior of the impeller cup with
Gasket Sealing Compound. Install the cup in the
impeller housing.
1. Screws 31998
1. O-ring
2. Impeller plate
DSC02328
1
1
1
1
2
1. Seal ring groove
2. Ribs
3. Air bleed groove
2311
DR1185
1. O-ring 34814
1
3
2
1
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