MacDon A40-D - Manual (Page 155)

SECTION 7 MAINTENANCE AND SERVICING
169000 / 169040
153
Revision E
7.11 AUGER AND AUGER DRIVE: A30-S,
A30-D
CAUTION
To avoid personal injury, before servicing
header/mower conditioner or opening drive
covers, follow procedures in Section 7.1
PREPARATION FOR SERVICING.
7.11.1 Auger Drive Chain: A30-S
7.11.1.1 Tension
Adjust chain (A) tension as follows:
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 bolts (B).
c. Loosen jam nut on adjuster bolt (C).
d. Turn adjuster bolt (C) to adjust chain (A) tension.
Deflection at (A) should be 1/4 in. (6 mm).
e. Tighten bolts (B).
f. Tighten jam nut on adjuster bolt (C).
g. Close endshield.
7.11.1.2 Removal
Remove chain (A) as follows:
a. Open LH endshield.
b. Loosen three bolts (B).
c. Loosen jam nut on adjuster bolt (C).
d. Turn adjuster bolt (C) to loosen chain (A).
e. Remove chain.
7.11.1.3 Installation
Install chain (A) as follows:
a. Position chain (A) on sprockets as shown.
b. Turn adjuster bolt (C) to adjust chain tension.
Deflection at (A) should be 1/4 in. (6 mm).
c. Tighten jam nut on adjuster bolt (C).
NOTE
Minor belt tension adjustments may be
made without affecting chain tension.
For
major adjustments, like after
re-positioning reel or auger, adjust chain
tension before belt tension.
d. Check auger drive V-belt (D) tension. Each belt
should deflect 3/16 in. (4 mm) at mid-span when
a load of 8–12 lbf (35–40 N) is applied to each
belt. If necessary, adjust as follows:
1. Loosen jam nut on adjuster bolt (E).
2. Turn adjuster bolt (E) to achieve tension as
per above.
3. Tighten bolts (B).
4. Tighten jam nut at (E).
e. Close shield before engaging header.
A
C
B
C
B
D
A
E