Sickle Drive Belts - A40-D; Tension Adjustment- Lh Sickle Drive Belts, A40-D; Removal - Lh Sickle Drive Belts, A40-D - MacDon A30-S Operator's Manual

7.8.11 Sickle Drive Belts – A40-D
7.8.11.1 Tension Adjustment- LH Sickle Drive
Belts, A40-D
Timing belt
IMPORTANT
To prolong belt and drive life, do not over-
tighten belts.
Adjust the LH sickle drive belt (A) tension as
follows:
D
B
a. Open the shield on the LH side of the header.
b. Loosen three nuts (B) and jam-nut on adjuster
bolt (C).
c. Turn adjuster bolt (C) to move pulley (D) until a
force of 5-6.5 lbf (22-30 N) applied at mid-span
deflects belt (A) 0.55 inch (14 mm).
d. Tighten jam-nut at (C) and three nuts (B).
e. Re-adjust tension of a new belt after a short run-
in period, (about 5 hours).
Double V-Belts
Adjust the sickle drive double V-belts (E) tension
as follows:
H
G
a. Loosen three nuts (F) and jam-nut on adjuster
bolt (G).
Form # 169000
MAINTENANCE/SERVICE
C
A
E
F
To prolong belt and drive life, do not over-
tighten belts.
b. Turn adjuster bolt (G) to move pulley (H) until a
force of 8-12 lbf (35-50 N) applied to each belt at
mid-span deflects each belt (E) 0.16 inch (4
mm).
c. Tighten jam-nut at (G) and three nuts (F).
d. Close end shield.
e. Re-adjust tension of a new belt after a short run-
in period, (about 5 hours).
7.8.11.2 Removal – LH Sickle Drive Belts, A40-D
Double V-Belts
Remove the sickle drive double V-belts (E) as
follows:
a. Open the shield on the LH side of the header.
b. Loosen three nuts (F) and jam-nut on adjuster
bolt (G).
c. Turn adjuster bolt (G) so that drive belts (E) can
be slipped off pulleys (D) and (H).
120
IMPORTANT
D
F
H
G
(continued next page)
Model Year - 2009
E