MacDon FD70 for Combine Operators - Manual (Page 181)

SECTION 10. MAINTENANCE AND SERVICING
Form 169006
179
Revision D
10.11.10 Wobble Box
CAUTION
To avoid personal injury, before servicing
machine or opening drive covers, follow
procedures in Section 10.1 PREPARATION
FOR SERVICING.
10.11.10.1 Mounting Bolts
Check four wobble box mounting bolts (B) torque
after the first 10 hours operation, and every 100
hours thereafter. Torque should be 200 ft·lbf
(270 N·m).
When tightening, start with side mounting bolts.
10.11.10.2 Wobble Box Removal
a. Loosen sickle drive belt, and slip off wobble box
pulley. Refer to Section 10.11.8 Sickle Drive
Belts: Non-Timed Drive, and Section 10.11.9:
Double Knife Drive Belts - Timed Drive.
b. Remove sickle head pin. Refer to Section
10.11.2 Sickle Removal, steps a. and b.
c. Remove bolt (A) from pitman arm.
d. Remove pitman arm from wobble box shaft.
e. Remove bolts (B) attaching wobble box to frame.
IMPORTANT
Do not remove or loosen locating tab
(C). This is a factory adjustment.
f. Remove wobble box.
10.11.10.3 Pulley Removal
a. Loosen nut and bolt from pulley.
b. Remove pulley using a 3-jaw puller.
10.11.10.4 Pulley Installation
a. Remove any rust or paint from shaft and pulley
splines. For replacement parts, remove oil/grease
with degreasing agent.
b. Apply Loctite® #243 adhesive (or equivalent) to
spline. Apply in two bands around shaft as
shown, with one band at end of spline, and one
band approximately mid-way.
c. Install pulley on shaft until flush with end of shaft,
and secure with bolt and nut. Torque bolt to
160 ft·lbf (217 N·m).
A
B
C