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 (c) Install gasket (3) on thermostat housing
(4) Clean pitted anodes with a wire brush. If
(2), insert thermostat (4) in housing, then position the housing
replacement is required, remove the anode from the holder,
against heat exchanger (5) and secure with four lockwashers
then thread a new anode into the holder.
and capscrews. Place cap (21) on heat exchanger (5).
(5) Inspect the component as follows:
(a) Inspect all parts for wear, thread or
f. Installation.
other damage. Replace defective parts.
(1) Lift heat exchanger into position at front of
(b) Inspect the thermostat for rust and
engine block, and secure with capscrews and bolts as
corrosion that may hold it wide open. Replace a defective
required.
thermostat.
(2) Position gasket (19) at cover (15), then place
(c) Inspect the oil bypass valve for wear.
elbow (16) on gasket and secure with lockwashers (18) and
Replace worn or defective parts.
capscrews (17).
(3) Connect raw water outlet to cover (7).
e. Reassembly.
(4) Connect fresh water return from manifold to
(1) Assemble the oil cooler components as
the oil cooler section.
follows:
(5) Position hose connection between water
(a) Install gasket (1, fig. 5-55) in back side
manifold and thermostat housing, and secure with two hose
of housing, then slide core (2) in place.
clamps.
(b) Position gasket (3) on housing, then
(6) Place a hose connection on elbow (16) and
position cover (4) on gasket and secure with lockwashers (5)
raw water line, and secure with two hose clamps.
and capscrews (6).
(7) Place hose (16, fig. 5-55) connection on
(c) Place oil bypass valve housing (21) in
flange (19) and elbow (18), then secure with two hose clamps
position, with gasket (22) in place, then secure with
(17). Finish connecting up fresh water line to pump in similar
lockwashers (23) and capscrews (7). Install valve (11), spring
manner.
(10), gasket (9), and plug (8) in housing (21).
(8) Fill the fresh cooling water system.
(d) Position gasket (24) in place on
housing (21), then place inlet and outlet tube assembly (12) at
bypass valve housing, and secure with lockwashers (25) and
NOTE
bolt (26).
Raw water system will fill when engine is
(e) Place gasket (20) in position on fresh
operated.
water suction outlet on bottom of heat exchanger (oil cooler)
housing, then place flange (19) on gasket and secure with four
5-21.
Fresh Water Pump
lockwashers (28) and capscrews (27).
a. General. The fresh water pump is mounted on lower
(2) Assemble the heat exchanger components as
forward side of the blower. It is a centrifugal pump for
follows:
circulating the fresh water from the heat exchanger through
(a) Position gasket (12, fig. 5-54) on heat
the cylinder block, cylinder head, water manifold, and exhaust
exchanger (5), slide core (13) into housing, then install gland
manifold.
seal rings (11). Install gasket (10), retainer (6), and cover (7).
b. Removal. Drain the cooling system, then remove the
Secure with lockwashers (8) and capscrews (9).
fresh water pump (para 5-2, f (1)).
(b) Install gasket (14), cover (15), and
c. Disassembly.
secure with capscrews (20). Install electrode assemblies (1)
(1) Remove end cover from pump housing (6, fig.
in covers (15 and 7).
5-72
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