MacDon M150 SP - Manual (Page 155)

MAINTENANCE AND SERVICING - M150 ENGINE
Form 169017 / 169087 / 169095
153
Revision C
7.8.10 BELTS
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.
7.8.10.1 Tension
a. The alternator, water pump, and fan belt are
automatically tightened, and manual adjustment is
not required.
b. Tension A/C compressor belt (A) as follows:
1. Shutdown engine, and open engine
compartment access hood to lowest position.
2. Loosen compressor mounting hardware (B).
3. 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.
4. Tighten compressor mounting hardware.
5. Re-check tension, and re-adjust as required.
7.8.10.2 A/C Compressor Belt Replacement
a. Shutdown the engine, and open engine
compartment access hood to lowest level. Refer
to illustration opposite.
b. Loosen compressor mounting hardware (B), and
push compressor towards engine to release
tension.
c. Remove belt (A).
d. Install new belt (A) on pulleys.
e. 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.
f. Tighten compressor mounting hardware (B).
g. Re-check tension and re-adjust as required.
7.8.10.3 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.
(continued next page)
B
A