MacDon D60 Draper Headers - Manual (Page 105)

SECTION 8. MAINTENANCE AND SERVICING
Form 169441 103 Revision B
L
f. Tighten the two bolts (G) on the endsheet.
g. Slide idler (P) up until most of the belt slack is
taken up. Tighten idler nut (F).
h. Adjust the timing belt tension, and check belt
clearance to belt guide. See 8.7.9.1.1 Tension
Adjustment - Timing Belt.
i. Re-install plate (L) in
endsheet.
j. Re-install left endshield.
k. Re-adjust tension of a new
belt after a short run-in
period, (about 5 hours).
8.7.9.1.4 Tension Adjustment - Left End
Double V-Belts
a. Loosen two bolts (A) on endsheet.
b. Loosen two bolts (B) on sickle drive mounting
bracket.
c. Turn adjuster bolt (C) to move drive motor until a
force of 12 lbf (53 N) deflects V-belts (D) 1/8 in.
(3 mm) at mid-span.
d. Tighten bolts (A) and (B).
e. Re-adjust tension of a new belt after a short run-
in period, (about 5 hours).
8.7.9.1.5 Removal - Left End V-Belts
Refer to illustrations opposite.
a. Loosen two bolts (A) on endsheet.
b. Loosen two bolts (B) on sickle drive mounting
bracket.
c. Turn adjuster bolt (C) to loosen the two V-belts
(D), and remove belts.
8.7.9.1.6 Installation - Left End V-Belts
Refer to illustrations opposite.
IMPORTANT
Sickle drive V-belts are a matched set.
Replace both drive belts even if only
one needs replacing. Do not pry belt
over pulley, loosen adjusting device
sufficiently to allow easy installation.
a. Slip belts (D) onto drive pulleys.
b. Turn adjuster bolt (C) to move drive motor until a
force of 12 lbf (53 N) deflects V-belts (D) 1/8 in.
(3 mm) at mid-span.
c. Tighten bolts (A) and (B) on drive mounting
bracket.
d. Re-adjust tension of a new belt after a short run-
in period, (about 5 hours).
A
C
B
D