MacDon A40-D - Manual (Page 68)

SECTION 6 OPERATION
169000 / 169040
66
Revision E
6.17.4 Auger Position
CAUTION
To avoid personal injury, before servicing
header/mower conditioner or opening drive
covers, follow procedures in Section 7.1
PREPARATION FOR SERVICING.
Auger position has been factory-set, and should
not normally require adjustment.
For nearly all conditions, the auger performs
best when set as close as possible to the
stripper bars without rubbing. This is especially
important in grass and other crops that have a
tendency to wrap.
Component wear may cause clearances to
become excessive, resulting in feeding problems
and uneven windrows.
To make adjustments to auger position, refer to
the Sections 6.17.4.1 to 6.17.4.6.
NOTE
In heavier crops it may be necessary to
remove the front stripper bar for
smoother crop flow across the auger.
Refer to Section 7.11.7 Stripper Bars.
NOTE
The auger should clear the stripper bars
on the auger pan by approximately
1/32–5/32 in. (1–4 mm). Shimming the
stripper bars may be required. Refer to
Section 7.11.7 Stripper Bars.
6.17.4.1 Auger Fore-Aft Adjustment: A30-S
a. Open LH endshield.
b. Loosen auger drive chain (A) as follows:
1. Loosen three bolts (B).
2. Loosen jam nut on adjuster bolt (C), and
turn adjuster bolt (C) to loosen chain (A).
c. Loosen the four nuts (D).
d. Loosen jam nut on adjuster bolt (E), and turn
bolt (E) to adjust auger fore-aft position.
e. Tighten jam nut on bolt (E), and tighten nuts (D).
f. Tighten auger drive chain as follows:
1. Turn adjuster bolt (C) to tighten chain (A).
Deflection at (A) should be 1/4 in. (6 mm).
2. Tighten jam nut on bolt (C).
g. Check auger drive V-belt (F) 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 (G).
2. Turn adjuster bolt (G) to achieve tension as
per above.
3. Tighten jam nut at (G).
h. Tighten bolts (B).
(continued next page)
AUGER DRIVE CHAIN
AND SPROCKET NOT
SHOWN FOR CLARITY
E
D
C
B
F
A
G
1/32–5/32 in.
(1–4 mm)
CLEARANCE
1/32–5/32 in.
(1–4 mm)
CLEARANCE
1/32–5/32 in.
(1–4 mm)
CLEARANCE
AUGER