(2) Install the two thermostats and the
(4) Install the thermostat sending unit and
thermostat cover (para. 150).
temperature warning light sending unit
(3) Install the hoses on the thermostat cover,
water pump, radiator, and water manifolds
(5) Fill the cooling system to proper level.
Section X. CRANE ENGINE COOLING SYSTEM
152. General
The engine temperature is controlled by the
circulation of coolant through the coolant pump, which
forces the coolant through the engine water jackets and
back into the radiator for cooling, Until the engine is up
to operating temperature, all or part of the coolant
leaving the engine is bypassed, by means of a
thermostat, directly to the pump for recirculation.
Draincocks are located on the bottom of the radiator and
on the forward, left side of the engine block.
153. Hose, Lines, and Fittings
a. Removal.
(1) Drain the cooling system.
(2) Remove the hose, lines, and fittings as
instructed on figure 86.
b. Cleaning and Inspection.
(1) Clean all parts with an approved cleaning
solvent.
(2) Inspect hose and fittings for cracks,
breaks, and other damage. Replace all
defective parts.
c. Installation.
(1) Install the hose, lines, and fittings as
illustrated on figure 86.
(2) Fill radiator with coolant.
154. Thermostat Housing Assembly
Figure 86. Hose, lines, and fittings, removal and
instalIation.
a. Removed.
(2) Inspect the thermostat housing for breaks,
(1) Remove the
radiator-to-thermostat
cracks, and other damage.
Replace
housing hose and pipe assembly (para.
defective thermostat housing.
c. Installation.
(2) Remove the thermostat housing as
instructed on figure 87.
(1) Install the thermostat housing as
illustrated on figure 87.
b. Cleaning and Inspection.
(2) Install the pipe assembly and radiator-to-
(1) Clean all parts thoroughly.
thermostat housing hose (para. 153).
AGO 6819A
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