MacDon M150 SP - Manual (Page 177)

MAINTENANCE AND SERVICING
Form 169017 / 169087 / 169095
175
Revision C
7.10 COOLING BOX
7.10.1 COOLING BOX SCREEN
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 engine is running. 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 rotor
(A). It should be .04 - .32 inches (1 - 8 mm) at all
locations when rotating.
NOTE
Rotor may touch screen as long as rotor
continues to rotate.
(continued next page)
A
B
C
D
E
F
C
A
G