MacDon M150 SP - Manual (Page 176)

MAINTENANCE AND SERVICING - M200 ENGINE
Form 169017 / 169087 / 169095
174
Revision C
7.9.10.3 Fan Belt Replacement
DANGER
Stop engine, and remove key from ignition
before leaving Operator’s seat for any reason.
A child or even a pet could engage an idling
machine.
a. Shutdown the engine, and open engine
compartment access hood to highest position.
b. Move both maintenance platforms to rear (cab-
forward) of windrower.
c. Loosen compressor mounting hardware (B), and
push compressor towards engine to release belt
(A) tension.
d. Remove belt (A).
e. Insert the drive end of a ½ inch drive ratchet
wrench into the belt tensioner (C).
f. Rotate tensioner clockwise until fan belt (D) can
be slipped off pulley (E). Release tensioner, and
remove wrench.
g. Remove belt from flywheel pulley (F), and then fan
pulley (G). Route belt around fan, and remove
belt.
h. Install new belt (D) around fan and onto pulleys in
(G) and (F).
i. Insert the drive end of a ½ inch drive ratchet
wrench into the belt tensioner (C).
j. Rotate tensioner clockwise until belt (D) can be
slipped onto pulley (E). Release tensioner, and
remove wrench.
k. Check that belt is properly seated in all pulley
grooves.
l. Install A/C compressor belt (A) on pulleys.
m. Pry compressor away from engine so that a force
of 8 to 12 lbf (35 - 55 N) deflects the belt (A) 3/16
inch (5 mm) at mid-span.
n. Tighten compressor mounting hardware (B).
o. Re-check tension, and re-adjust as required.
p. Move maintenance platforms to working position,
and close engine compartment hood.
A
B
C
E
D
F
G
A