Replacing Anodes (Xdp-B); Replacing Heat Exchanger Anodes - Volvo 5.0OSiE-J Operator's Manual

Maintenance
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Replacing Anodes (XDP-B)

1. Inspect anodes at each usage. If an anode is 2/3
its original size (1/3 eroded), replace it.
2. Remove the screw holding the anode inside the
propeller housing (A), the screw holding the
anode onto the bearing housing cover (B), and
the screw holding the anode on the trim
cylinder (C). Set these screws aside; you will
reuse them.
3. Pull off the old anodes.
4. Insert new anodes and secure with the saved
screw.
5. Tighten screws to 4.4–7.4 ft. lb. (6–10 Nm).
If additional electronic or electrical equipment is in-
stalled, each item should have an individual anode or
grounding device and all grounding devices must be
interconnected. Follow equipment manufacturers rec-
ommendations.
NOTICE! Your Volvo Penta product has been shipped
with Aluminum anodes (except the trim cyl-
inder anode, which is zinc). Aluminum is ef-
fective in both saltwater and in fresh water.
If you will be boating in fresh water exclu-
sively, we recommend switching the anodes
to Magnesium.

Replacing Heat Exchanger Anodes

Engines with closed cooling systems have anodes lo-
cated at the top of the heat exchanger. This anode (D)
resembles a bolt and may be removed and replaced
using a 3/4 inch (19mm) wrench. When installing,
tighten the anode all the way by hand, then turn an ad-
ditional quarter turn using a wrench.
VPA 7748131 English 09-2007