MacDon A40-D - Manual (Page 130)

SECTION 7 MAINTENANCE AND SERVICING
169000 / 169040
128
Revision E
7.8.9 Sickle Drive Belt: A30-S
CAUTION
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.
7.8.9.1 Tension Adjustment: Sickle Drive Belt -
A30-S
IMPORTANT
To prolong belt and drive life, do not
over-tighten belts.
a. Open LH endshield.
b. Loosen nut (B) securing idler pulley.
c. Loosen jam nut on adjuster bolt (C).
d. Turn adjuster bolt (C) to move idler until a force
of 20 lbf (80 N) deflects belt (A) 1/4 in. (6 mm) at
mid-span.
e. Tighten jam nut at (C) and nut (B) on idler
pulley.
f. Close shield.
g. Re-adjust tension of a new belt after a short
run-in period (about 5 hours).
7.8.9.2 Removal: Sickle Drive Belt - A30-S
a. Open LH endshield.
b. Loosen jam nut on adjuster bolt (D).
c. Loosen three bolts (E).
d. Turn adjuster bolt (D) to loosen auger drive belts
(F) so they can be slipped off pulley (G).
e. Loosen nut (H) securing idler pulley.
f. Loosen jam nut on adjuster bolt (J).
g. Turn adjuster bolt (J) so that sickle drive belt (A)
can be slipped off pulley (G).
h. Remove bolt-in plate in LH endsheet at sickle
drive box.
i. Slip belt off sickle drive box pulley, and route
belt through this hole to remove it.
A
C
B
A
J
H
G
G
F
D
E