90-824052R3 JUNE 2002 LOWER UNIT - 6B-23
Water Pump
CLEANING AND INSPECTION
1. Clean all water pump parts with solvent and dry
with compressed air.
2. Inspect water pump cover and base for cracks
and distortion (from overheating).
3. Inspect face plate and water pump insert for
grooves and/or rough surfaces.
IMPORTANT: When completing gear housing
repairs, that require removal of water pump
impeller, it is recommended that the impeller be
replaced. If it is necessary, however, to re-use
impeller, DO NOT install in reverse to original
rotation, or premature impeller failure will occur.
4. Inspect impeller side seal surfaces and ends of
impeller blades for cracks, tears and wear.
Replace impeller if any of these conditions are
found.
5. Inspect impeller bonding to impeller hub.
6. Inspect impeller for glazed or melted appearance
(caused by operation without sufficient water
supply). Replace impeller if any of these
conditions exist.
IMPORTANT: It is recommended that all seals and
gaskets be replaced (as a normal repair
procedure) to assure effective repair.
REMOVAL AND DISASSEMBLY
1. Slide rubber centrifugal slinger up and off
driveshaft (if equipped).
2. Remove water tube guide and seal from water
pump cover. (Retain guide for reassembly and
discard seal.)
3. Remove (and retain) 3 nuts, one bolt and all
washers which secure water pump cover to gear
housing.
b
c
a
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d
a - Centrifugal Slinger (if equipped)
b - Water Tube Guide
c - Water Tube Seal
d - Nuts, Bolt and Washers To Be Removed
4. Using 2 pry bars, lift water pump cover up and off
driveshaft.
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5. Inspect water pump cover and insert, as outlined
in “Cleaning and Inspection,” previous.
6. If inspection of water pump insert determines that
replacement is required, follow Step “a” or “b”
(immediately following) to remove insert from
water pump cover.
NOTE: Try Step “a” first. If insert cannot be removed
with Step “a,” use Step “b.”
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