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CA218
CLEANING SEAWATER SECTION OF HEAT
EXCHANGER - CLOSED COOLING (COOLANT)
MODELS ONLY
Seawater section of heat exchanger should be cleaned at least once
a year or whenever decreased cooling efficiency is noticed.
1
Remove bolts securing end plates to each end of heat exchanger.
Remove end plates, sealing washers and gaskets. Discard sealing
washers and gaskets and clean gasket material from end plates and
heat exchanger.
Clean water passages in heat exchanger by inserting a suitable size
wire brush into each passage. Use compressed air to blow loose par-
ticles out. Apply Quicksilver Perfect Seal to both sides of new end
plate gaskets. Assemble new gaskets, new sealing washers and end
plates onto heat exchanger. Install bolts and tighten securely. Start
engine and inspect cooling system for leaks.
CA88
SEAWATER PUMP IMPELLER
This maintenance should be performed by an Authorized MerCruiser
Dealer.
2
Seawater Cooled Models
3
Closed Cooling Models
Seawater pump impeller should be inspected whenever insufficient
seawater flow is suspected (if operating temperature exceeds nor-
mal range).
Alpha V8
83
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