MacDon A40-D Pull-Type - Manual (Page 161)

SECTION 7 MAINTENANCE AND SERVICING
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159
Revision F
j.
j. Remove three flanged lock nuts (M) that secure
gearbox (N) to header endsheet, and
remove gearbox.
7.13.11 Installing Gearbox: A40-D
a. Position gearbox (N) (as shown above) picking
up the three holes in the endsheet.
b. Install three flanged locknuts (M), but do
NOT tighten.
c. Position channel (L), picking up the three holes
in the endsheet.
d. Install bolts at (J) in the lower two holes, and bolt
and nut (K) in the upper hole, and tighten.
e. Tighten hardware.
f. Install drive pulley (G) as follows:
1. Slide pulley (G) onto shaft with key.
2. Install tapered bushing (H) onto the shaft,
ensuring holes are aligned with holes
in pulley.
3. Align faces of pulley (G) and countershaft
pulley (O) to within .06 in. (1.5 mm).
4. Install three bolts in tapered bushing (H),
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).
g. Position belts (F) on pulleys (G) and (O).
h. Turn adjuster bolt (E) to move pulley (G) until a
force of 8–12 lbf (35–50 N) on each belt at
mid-span deflects the belt (F) 0.16 in. (4 mm).
i. Tighten jam nut at (E), and three nuts (D).
j. Slide upper roll driveline onto gearbox as shown.
Install and tighten two bolts and nuts (S). Torque
to 75 ft·lbf (102 N·m).
k. Attach lower roll driveline flange onto gearbox
flange using four bolts and nuts (T).
(continued next page)
J
L
K
G
H
F
D
E
O
T
S
T
M
N