MacDon FD70 for Combine Operators - Manual (Page 177)

SECTION 10. MAINTENANCE AND SERVICING
Form 169006
175
Revision D
L
d. Loosen two bolts (H) on sickle drive mounting
bracket.
e. Turn adjuster bolt (J) to loosen the two V-belts
(K), and remove belts.
f. Remove bolt in plate
(L) in left endsheet at
wobble box, and
remove plate.
This provides
clearance between
pulley and endsheet
for the belt when it is
removed.
g. Slip timing belt off wobble box pulley, and route
belt between wobble box pulley and endsheet.
h. Remove belt from drive pulley.
10.11.9.1.3 Installation: Left End Timing Belt
a. Locate timing belt (M) onto drive pulley (N).
b. Route belt between wobble box pulley (O) and
endsheet, and locate on wobble box pulley and
over idler (P).
NOTE
When installing new belt, never pry belt
over pulley. Be sure adjusting device is
fully loosened, then tension belt.
c. Position V-belts (K) onto drive pulleys.
d. Turn adjuster bolt (J) to move drive motor until a
force of 12 lbf (53 N) deflects V-belts (K) 1/8 in.
(3 mm) at mid-span.
e. Tighten two bolts (H) on drive mounting brackets.
(continued next page)
J
H
K
J
H
K
N
M
O
P