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MAINTENANCE/SERVICE
169304 134 Rev. C
57.7 COOLING BOX
57.7.1 Cooling Box Screen Cleaners
The cooling box screen is equipped with an
automatic cleaning device which "vacuums" the
screen by means of two rotors. They only
operate when the key is on. The rotors are
electrically driven and the suction is provided by
the engine cooling fan.
If the screen is not being cleaned by the rotors,
they may be plugged. Service rotors and screen
as follows:
a. Stop engine and remove key.
b. Raise engine compartment hood fully.
c. If rotors (A) are plugged, clean as follows:
1. Remove nut (B).
2. Pivot rotor assembly (C) away from screen.
3. Blow out debris from rotors (A) with
compressed air.
d. Push latch (D) and open screen assembly
access door (E). Secure with rod (F) stored
inside screen door.
e. If duct (G) is plugged, blow out debris with
compressed air.
f. Clean screen with compressed air.
g. Reposition rotor assembly (C) secure with bolt
and nut (B).
h. Check clearance between trailing edge of
cleaner ducts (A). It should be .04-.32 inches
(1-8 mm) at all locations when rotating.
NOTE
Cleaner duct may touch screen as long as
duct continues to rotate.
(continued next page)
D
E
F
A
B
C
C
A
G
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