T O 35C2-3-442-2
fill core assembly tank contact surface
cooling fin back into position. To replace
grooves with solder.
a defective tube, unsolder tube from core
assembly and remove tube. Insert a
b. Place upper tank on core assembly,
suitable replacement tube in core assembly
making sure relationship marks are in
and solder in position. Straighten bent
alignment. Solder upper tank to core
assembly. Repeat procedure for lower
e. Remove damaged paint using a
c. Solder mounting brackets and vent
suitable scraper. Blend in edges, prime,
tube in position.
and paint damaged areas.
d. Test radiator as specified in para-
and reassemble radiator as follows:
graph 4-10. Perform necessary proce-
dures if radiator does not meet required
Avoid breathing fumes generated by
4-16. INSTALLATION. Refer to Operator
tection is required.
and Organizational Maintenance Manual and
Section II. SHUTTER AND CONTROL ASSEMBLY
4-19. REMOVAL. Refer to Operator and
Organizational Maintenance Manual and
remove the control assembly.
The shutter consists of movable
vanes mounted in nylon bearings which are
actuated by a control rod connected to the
control assembly. When engine coolant
and disassemble the control assembly in
temperature reaches 158F, the control
the order of index numbers assigned. Pay
assembly power element starts to extend
particular attention to the following:
which moves the control rod opening the
shutter vanes. If coolant temperature
decreases, the control assembly integral
a. When removing retaining ring (14),
return spring moves the control rod closing
press in on large seat (15) to relieve spring
the shutter vanes. This modulated control
tension on ring. Remove retaining ring and
automatically opens and closes the shutter
slowly remove large seat until spring
vanes the amount necessary to maintain the
tension is relieved.
engine at normal operating temperature.
Opening and closing of the shutter vanes
regulates cooling air flow through the
Cleaning Solvents are flammable and
r a d i a t o r . The shutter assembly is equipped
moderately toxic to skin, eyes and
with a manual control handle to permit
r e s p i r a t o r y tract. Eye and skin
manual opening of the shutter vanes. The
protection required. Good general
handle should be in the full up position dur-
ventilation is normally adequate.
ing normal operation.
4-21. CLEANING. Clean parts in an
approved cleaning solvent and dry