Cooling System
Impeller: Checking & Replacing
A
1
2
3
6
5
7
4
P0015651
NOTICE!
If you have a seacock installed, close it now
to prevent any possible water intrusion; otherwise,
plug the intake hose
A
with a suitable stopper to pre-
vent water entry.
NOTICE!
Always carry a spare impeller on board.
1.
Loosen the four screws
1
and remove screws and
washers
2
. Save for later use.
2.
Remove the impeller housing
7
cover plate
3
.
3.
Remove and inspect the impeller
4
. If there are
cracks, signs of burning or melting on the edges,
or any other visible defects, the impeller must be
replaced. Inspect the O-rings
5
for nicks, cuts,
and wear. Replace as necessary. O-rings
6
are
for retaining cover screws in the cover and are not
critical.
4.
Lubricate the pump housing with non-petroleum
based lubricant, suitable for rubber, such as glyc-
erine. If you have purchased the Volvo Penta
impeller kit, a packet of glycerine is included.
5.
Reinstall the impeller and O-rings. Reinstall the
housing cover plate. Reinstall the washers and
screws. Tighten screws to 19–24 in. lb. (2.2–2.8
Nm).
6.
If the intake hose was removed, reinstall hose
and hose clamp.
If you closed the seacock, be sure to reopen it before
restarting the engine.
Maintenance
78
47702842 04-2012
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