Service manual

CLOSED COOLED MODELS SERVICE MANUAL NUMBER 26
Page 6B-16 90-861329--1 MARCH 1999
2. Remove bolts which secure end plate to each end of heat exchanger, then remove end
plates, seal washers and gaskets. Discard seal washers and gaskets. Clean gasket
material from end plate and heat exchanger.
73581
71515
a
b
c
d
e
b
a-Bolt
b-End Cap
c-Sealing Washer
d-Gasket
e-Drain Plug
3. Clean water passages in heat exchanger by inserting a suitable size wire brush into
each passage. Use compressed air to blow loose particles out of water passages.
4. Apply Quicksilver Perfect Seal to both sides of new end plate gaskets, then reinstall end
plates, using new gaskets and seal washers. (Be sure to install seal washers between
end plates and gaskets.) Torque end plate bolts to specifications.
CAUTION
Avoid seawater pickup pump impeller damage. DO NOT operate engine without
water being supplied to seawater pickup pump.
5. With boat in the water and/or cooling water properly supplied to seawater pickup pump,
start engine and inspect for leaks.
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