Wobble Box - MacDon A30-S Operator's Manual

7.8.13 Wobble Box

7.8.13.1 Mounting Bolts
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.
Check torque of four wobble box mounting bolts
(A) after the first 10 hours operation, and every
100 hours thereafter. Torque bolts to 200 ft·lbf
(270 N·m). When tightening, start with the side
mounting bolts.
7.8.13.2 Wobble Box Removal
a. Loosen sickle drive belt (B), and slip off wobble
box pulley. Refer to one of the following
sections, depending on your equipment:

Section 7.8.9.1 Tension Adjustment: Sickle
Drive Belt - A30-S

Section 7.8.10.1
LH Sickle Drive Timing Belt - A30-D

Section 7.8.10.4
RH Sickle Drive Timing Belt - A30-D

Section 7.8.11.1
LH Sickle Drive Belts - A40-D

Section 7.8.11.4
RH Sickle Drive Belt - A40-D
b. Stroke sickle to its outer limit.
c. Clean area around sickle head.
Form 169000 / 169040
SECTION 7 MAINTENANCE AND SERVICING
A
B
A
Tension Adjustment:
Tension Adjustment:
Tension Adjustment:
Tension Adjustment:
d. Remove grease zerk (D) from sickle head pin
(E).
e. Remove nut and bolt (C).
f. Insert screwdriver in groove of pin (E), and pry
"up" on pin to free sickle. Pin does not have to
be removed from arm.
G
g. Remove bolt (F) from pitman arm.
h. Remove pitman arm (G) from wobble box output
shaft.
i. Remove bolts (A) attaching wobble box to
frame.
j. Remove wobble box.
142
D
E
C
F
A
Revision D