Section II, RADIATOR AND MOUNTING BRACKETS
m a t t e r from the radiator core by using com-
41. General
pressed air directed at the front of the radiator.
The engine coolant is circulated through the
engine and the radiator by the belt driven
b. Inspection, Testing, and Repair.
water pump. The water pump drive pulley
(1) W i t h the radiator filled, examine the
drives the water pump and also serves as
core for leaks.
a mount for. the fan blade. Cooled liquid is
( 2 ) I f a leak in a radiator cannot be lo-
drawn from the bottom of the radiator and
cated, plug all outlets except the filler
pumped through the oil cooler and passages in
o p e n i n g , and place the radiator in a
the engine block and cylinder heads. The
tank of water. Wrap a cloth around
heated liquid leaves the cylinder head through
an air hose connected to a low pres-
the water manifold, where the thermostat con-
sure air source not in excess of 10 psi.
trols the opening of the bypass. The bypass
Insert the hose in the filler neck, using
d i r e c t s the coolant to the auction aide of the
the cloth to seal the opening, and sub-
water pump until the coolant temperature
merge the radiator. Leaks will be
r e a c h e s 165F. The thermostat then begins to
shown by air bubbling up through the
o p e n and the coolant is directed through the
water.
radiator which is cooled by air circulated
t h r o u g h it by a 25-inch pusher-type fan and
(3) S o l d e r or braze leaks in the core or
recirculated by the water pump.
tanks. If the radiator is beyond re-
pair, replace it with a new assembly.
42. Radiator and Mounting Brackets
( 4 ) Straighten bent fins.
Removal and Disassembly
a. Removal.
44. Radiator and Mounting Brackets
( 1 ) R e m o v e the radiator cowling (TM 5-
Reassembly and Installation
3820-205-20/1).
a. Reassembly. Refer to figure 13, and reas-
( 2 ) R e m o v e the radiator brace, drain the
s e m b l e the radiator and mounting brackets in
r a d i a t o r , and disconnect the radiator
t h e reverse order.
hose.
6. Installation.
(3) R e f e r t o f i g u r e 1 2 , a n d r e m o v e t h e
(1) Refer to figure 12, and install the ra-
r a d i a t o r and mounting brackets from
d i a t o r and mounting brackets on the
the unit.
unit.
b. Disassembly. Refer to figure 13, and dis-
( 2 ) Install the radiator brace and connect
a s s e m b l e the radiator and mounting brackets.
the radiator hose.
(3) Install the radiator cowling (TM 5-
43. Radiator and Mounting Brackets
C l e a n i n g , Inspection, Testing,
3820-205-20/1).
and Repair
(4) Service the radiator (TM 5-3820-
a. Cleaning. Remove the dirt and foreign
205-10/l).
AGO 8498A
