4-10
Replacing the Raw Water Pump Impeller
WARNING
Accidental or remote starting can
cause severe personal injury or death. Discon-
nect the negative (–) cable at the battery to pre-
vent the engine from starting.
See Table 4-1 for scheduled replacement. Have
towels and containers ready and avoid spilling raw
water on the electrical components below the pump.
Referring to Figures 4-8 and 4-9, replace the impel-
ler as follows:
1. Close the sea cock.
2. Disconnect the negative (–) cable at the battery
to prevent the engine from starting.
3. Remove the front and top access doors. If work
space is limited, remove the end panel (Fig-
ure 4-6) to be able to hold the nut on the pump
pivot bolt (Figure 4-8) with an open-end wrench
while loosening the bolt.
4. Loosen the hose clamps shown in Figure 4-8
and disconnect the hoses.
5. Loosen the two pump mounting bolts and re-
move the belt. Remove the tension adjusting
bolt first and swing the pump out for access to
the pivot bolt nut, lock washer and flat washer.
Remove the pivot bolt and pull the pump out.
LOOSEN THESE
2 HOSE CLAMPS
PUMP
PIVOT
BOLT
TENSION
ADJUSTING
BOLT
PUMP PIVOT BOLT,
SPACER, WASHER,
LOCKWASHER & NUT
FIGURE 4-8. REMOVING RAW WATER PUMP
Redistribution or publication of this document,
by any means, is strictly prohibited.
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