SECTION 7 MAINTENANCE AND SERVICING
Form 169000 / 169040
143
Revision D
7.8.13.3 Wobble Box Installation
a. Position wobble box as shown, and install four
bolts (A). Torque side bolts, and then torque
bottom bolts to 200 ft·lbf (270 Nm).
IMPORTANT
Use
only
Grade L9 bolts and flat washers.
b. Apply Loctite® #243 adhesive (or equivalent) in
two bands (B) around shaft as shown, with one
band at end of shaft, and one band
approximately mid-way.
c. Slide pitman arm (C) onto wobble box output
shaft.
d. Rotate wobble box pulley to ensure pitman arm
“just” clears frame to ensure proper placement
on splines. Remove arm (C), and re-position on
splines as required.
e. Rotate wobble box pulley to locate pitman arm
at “furthest outboard” position.
f. Slide arm (C) up or down on shaft until it “just”
contacts sickle head (D), (0.010 in. (0.25 mm))
gap.
g. Install bolt (E) and nut, and torque to 160 ft·lbf
(217 N·m).
h. Align sickle head (D) with pitman arm (C).
i.
Install sickle head pin (F) in pitman arm (C) and
tap it down into the sickle head, ensuring pin is
bottomed out in the sickle head.
j.
Tap underside of the sickle head until the pin is
flush with the upper face of the pitman arm (C).
k. Carefully adjust to achieve a 0.010 in. (.25 mm)
gap at (G) with the sickle laying flat on the first
few guards.
l.
Replace bolt (H) and nut.
m. Tighten nut to 160 ft·lbf (220 N·m).
n. Replace grease zerk (J) in pin.
o. Install drive belt onto wobble box pulley and
tighten. 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
Tension
Adjustment:
LH Sickle Drive Timing Belt - A30-D
Section
7.8.10.4
Tension
Adjustment:
RH Sickle Drive Timing Belt - A30-D
Section
7.8.11.1
Tension
Adjustment:
LH Sickle Drive Belts - A40-D
Section
7.8.11.4
Tension
Adjustment:
RH Sickle Drive Belt - A40-D
A
B
C
E
J
H
C
F
H
G
D
