Impeller: Checking & Replacing
1 Remove the hose clamps and hoses from pump.
2 Loosen the four screws
1
and remove the housing
2
.
3 Inspect the impeller
3
. 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-ring
4
for nicks, cuts, and wear. Replace as nec-
essary.
4 Lubricate the pump housing with non-petroleum
based lubricant, suitable for rubber, such as glyc-
erine. If you have purchased the Volvo Penta impel-
ler kit, a packet of glycerine is included.
5 Reinstall the impeller. Reinstall the housing.
Tighten bolts to 19–24 in. lb. (2.2–2.8 Nm).
6 Reinstall the hoses and hose clamps.
Freshwater System
If your engine is equipped with a freshwater cooling
system, check the coolant level before each trip. If
coolant is low, add by removing the coolant filler cap
B
and adding coolant via the fill spout. Do not fill above
the maximum fill line
A
.
WARNING!
Do not open the coolant filler cap when the engine is
hot. Steam or hot fluid could spray out, causing severe
burns.
Engines covered by this manual are filled at our factory
with the new, more advanced “VCS” yellow coolant. If
coolant needs to be added or replaced, use the same
coolant type that came in the engine.
DO NOT
mix
coolant types.
Do not use other coolant types
such as traditional
green ethylene glycol, propylene glycol (pink), OAT, or
HOAT coolants.
Volvo Penta offers pre-mix, ready-to-use containers of
the yellow coolant. If using full strength antifreeze, use
a 50/50 mix of antifreeze and distilled water.
23675
51806
Maintenance
86
47706149 09-2015 © AB VOLVO PENTA
Summary of Contents for V8-225
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