TM 5-4310-354-14
Section V. RADIATOR AND OIL COOLER
6-13. General. The radiator and oil cooler group
consists of the engine coolant radiator and the air
(3) Plug outlet connection of the oil cooler and
compressor lubricating oil cooler.
These two
fill with clean compressor oil (LO 5-4310-
components are attached to the housing end panel and
354-12, figure 3-1). Apply air pressure of
2
the oil cooler is protected with a guard also attached to
from 4 to 10 PSI (0.28 to 0.70 KG/CM ) to
the panel. The assembly incorporates a fan shroud and
inlet connection and check for leaks.
guard on the radiator side. Cooling air is drawn through
Mark each leak as detected.
the oil cooler and radiator, passing over the finned tubes
of each, by a suction type fan mounted on the engine.
(4) relieve the air pressure and drain oil from
The engine coolant is circulated through the radiator and
the cooler. Solder or braze all leaks
engine by the engine water pump and flow regulated by
detected and recheck by repeating step 3
a thermostat located in the engine cylinder head.
above.
Compressor lubricating oil is directed to the oil cooler by
the action of the thermal bypass value assembly located
(5) Plug inlet and outlet connections of the
below the compressor oil filter. After the oil passes
radiator and fill with water. Apply air
through the oil cooler, it flows to and through the
pressure of from 4 to 10 PSI (0.28 to 0.70
2
compressor oil filter before entering the compressor.
KG/CM ) to the radiator filler opening and
check radiator for leaks. Mark each leak
detected.
6-14.
Radiator and Oil Cooler.
a. Removal. Remove the radiator and oil cooler
(6) Relieve the air pressure and drain water
group from the unit (figure 4-18).
from the radiator. Solder or braze all
leaks detected and recheck by repeating
b. Disassembly. Disassemble the radiator and oil
step 5 above.
cooler group (figure 4-19).
(7) Inspect all attaching hardware for cracks,
c. Cleaning, Inspection, and Repair.
breaks, damaged threads, or any other
defect.
(1) Clean the exterior of the oil cooler
assembly in accordance with paragraph
d. Reassembly. Reassemble the radiator and oil
cooler group (figure 4-19).
the same type of solvent.
e. Installation. Install the radiator and oil cooler
(2) Clean the radiator assembly in the same
group on the unit (figure 4-18).
manner as described in step 1 above.
6-22
