MacDon A40-D - Manual (Page 165)

SECTION 7 MAINTENANCE AND SERVICING
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163
Revision E
7.13.9 Gearbox Installation: A30-S
a. Position gearbox (A) as shown, picking up the
three holes (B) in the endsheet. See above.
b. Install three flanged locknuts at (B). Do not
tighten.
c. Position channel (C) as shown, picking up the
three holes in the endsheet.
d. Install bolts (D) in the lower two holes and bolt
and nut (E) in the upper hole, and tighten.
Install bolt (E) with head on backside.
e. Install auger drive pulley (F) as follows:
1. Slide pulley (F) onto shaft with key.
2. Install tapered bushing (G) onto shaft,
ensuring holes are aligned with holes in
pulley.
3. Align pulley (F) and countershaft pulley (H)
faces to within .06 in. (1.5 mm).
4. Install three bolts in tapered bushing (G),
and tighten to 18 ft·lbf (25 N·m).
5. Tap bushing, and re-torque. Repeat until
bolts no longer turn at 18 ft·lbf (25 N·m).
f. Install and tighten auger drive belts (J) as
follows:
1. Position auger drive belts (J) as shown.
2. Locate chain (K) onto small sprocket.
3. Turn adjuster bolt (L) to tighten chain.
Deflection at (K) should be 1/4 in. (6 mm).
4. Tighten jam nut on adjuster bolt (L).
5. Turn adjuster bolt (M) 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.
6. Tighten jam nut on adjuster bolt (M), and the
three bolts (N).
(continued next page)
D
C
E
J
F
G
H
L
N
J
K
M
B
A