Auger Drive Belts, A30-S; Tension; Removal; Installation - MacDon A30-S Operator's Manual

7.11.3

Auger Drive Belts, A30-S

7.11.3.1 Tension

IMPORTANT
To prolong drive life, do not over-tighten
belts. Belt slippage is used to protect the
auger in an overload situation.
Minor belt tension adjustments may be
made without affecting chain tension. For
major adjustments, like after repositioning
reel or auger, adjust chain tension before
belt tension.
Adjust auger drive belts (A) tension as follows:
a. Open LH end shield.
C
b. Loosen three bolts (B).
c. Loosen jam-nut on adjuster bolt (C).
d. Turn adjuster bolt (C) so that each belt deflects
3/16 in. (4 mm) at mid-span when a load of 8-12
lbf (35-40 N) is applied to each belt.
e. Tighten bolts (B).
f. Tighten jam-nut at (C).
g. Close shield before engaging header.
Form # 169000
MAINTENANCE/SERVICE
NOTE
A
B

7.11.3.2 Removal

a. Open LH end shield.
C
D
b. Remove chain (D) from small sprocket as
follows:
1. Loosen three bolts (B).
2. Loosen jam-nut on adjuster bolt (E).
3. Turn adjuster bolt (E) to loosen chain (D).
4. Remove chain from small sprocket.
c. Loosen jam-nut on adjuster bolt (C).
d. Turn adjuster bolt (C) to loosen auger drive belts
(A).
e. Remove belts (A).

7.11.3.3 Installation

Auger drive belts are a matched set.
Replace both drive belts even if only one
needs replacing.
a. Position auger drive belts (A) as shown.
b. Install auger drive chain (D) as follows:
1. Locate chain (D) onto small sprocket.
2. Turn adjuster bolt (E) to tighten chain.
Deflection at (D) should be ¼ inch (6 mm).
3. Tighten jam-nut on adjuster bolt (E)
c. Turn adjuster bolt (C) so that each belt deflects
3/16 in. (4 mm) at mid-span when a load of 8-12
lbf (35-40 N) is applied to each belt.
d. Tighten jam-nut on adjuster bolt (C) and the
three bolts (B).
Re-adjust tension of a new belt after about
5 hours of operation.
e. Close end shield.
140
E
B
IMPORTANT
NOTE
Model Year - 2009
A