ARMY TM 9-6115-604-12
NAVY NAVFAC P-8-633-12
c. Install.
(1) Install drain (7, Figure 4-44).
(2) Install top elbow (1) and bottom elbow (6) Into radiator.
(3) Install sight glass (5), rubber preformed packings (2), and brass washers (3), and tighten nuts (4).
(4) Refill radiator in accordance with paragraph 3-12
4-61.
MAINTENANCE OF FAN. The fan hub and pulley assembly Is belt driven and develops air flow across the
radiator to cool engine coolant.
a.
Inspect.
(1)
Remove right and left hand shrouds (1 and 2, Figure 3-17) by removing hexagon head capscrews (3),
lockwashers (5), and hexagonal nuts (4).
(2)
Remove top and bottom grill (6) and center grill (7) by removing hexagon head capscrews 3), lockwashers
(5), and hexagonal nuts (4).
(3)
Inspect fan blades for secure installation Inspect hub for signs of looseness. Inspect fan blades for signs of
cracking, chipping, or bending.
(4)
Install top and bottom grill (6) and center grill (7) and secure with hexagon head capscrews (3), lockwashers
(5), and hexagonal nuts (4).
(5)
Install right and left hand shrouds (1 and 2) and secure with hexagon head capscrews (3), lockwashers (5),
and hexagonal nuts (4).
b.
Remove
(1)
Remove right and left fan shrouds (1 and 2, Figure 3-17) by removing hexagon head capscrews (3),
lockwashers (5), and hexagonal nuts (4).
(2)
Remove top and bottom grills(6) and center grill (7) and secure with hexagon head capscrews (3),
lockwashers (5), and hexagonal nuts (4).
(3)
Remove radiator assembly in accordance with paragraph 4-57.
(4)
See Figure 4-45 Remove ribbed V belt (51), as follows
Do not allow fingers to slip between the ribbed V belt and pulleys when removing
or Installing the belt.
Do not immediately let go or remove wrench from pivot arm cap once the ribbed V
belt is removed, otherwise, built up spring tension will cause the tan Idler arm and
pulley assembly to snap back (upwards) and cause possible injury.
NOTE
Two people are required to perform this task.
(a)
Apply a wrench to the bossed end of pivot arm cap (39) and pry upwards clockwise until spring
tension on the ribbed V belt (51) is relieved enough to allow Its removal.
(b)
With spring tension or belt removed and sufficient slack available, slip the ribbed V belt (51) away
from the pulley assemblies.
(c)
With belt removed and with wrench (pressure) still applied to the pivot arm cap (39) allow spring
tension to gradually bring the fan idler and pulley assembly (22) counterclockwise to reset at
approximately 1 o'clock position.
4-123
