MacDon A40-D - Manual (Page 132)

SECTION 7 MAINTENANCE AND SERVICING
169000 / 169040
130
Revision E
7.8.10 Sickle Drive Belts: A30-D
7.8.10.1 Tension Adjustment: LH Sickle Drive
Timing Belt - A30-D
IMPORTANT
To prolong belt and drive life, do not over-
tighten belts.
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.
a. Open LH endshield.
b. Loosen three nuts (B).
c. Loosen jam nut on adjuster bolt (C).
d. Turn adjuster bolt (C) to move pulley (D) until a
force of 5–6.5 lbf (22–30 N) deflects belt (A)
0.55 in. (14 mm) at mid-span.
e. Tighten jam nut at (C), and three nuts (B).
f. Close endshield.
g. Re-adjust tension of a new belt after a short
run-in period (about 5 hours).
7.8.10.2 Removal: LH Sickle Drive Belts: A30-D
a. Open LH endshield.
b. Loosen nut (E) on idler sprocket.
c. Turn adjuster bolt (F) to loosen chain so that it
can be removed from large sprocket (G).
d. Loosen nuts (H), and jam nut on adjuster bolt
(J).
e. Turn adjuster bolt (J) to loosen V-belts (K) so
that belts can be slipped off pulley (D).
(continued next page)
K
D
H
J
B
C
A
D
A
E
F
G