MacDon D60 Draper Headers - Manual (Page 98)

SECTION 8. MAINTENANCE AND SERVICING
Form 169441 96 Revision B
8.7.6 SICKLE GUARDS
Check daily that guards are aligned to obtain
proper shear cut between sickle section and
guard. Sickle sections should contact shear
surface of each guard.
8.7.6.1 Guard Adjustment
To align guards, proceed as follows: The guard
straightening tool (MacDon part #140135) is
available from your MacDon Dealer:
a. To adjust guard tips upwards, position tool as
shown and pull “up”.
b. To adjust tips downward, position tool as shown
and push “down”.
TIP: If trouble is encountered cutting tangled, or
fine-stemmed material, replace lower guards with
stub guards, and install a sickle hold-down on
every guard.
If material is tough to cut, install stub guards with
top guard and adjuster plate. A stub guard
conversion kit is available from your MacDon
Dealer. Refer to Section 10.3 STUB GUARD
CONVERSION KIT.
8.7.6.2 Guard Replacement
CAUTION
Always engage reel props before working
under reel.
8.7.6.2.1 Pointed Guards - Single Knife
To replace pointed guards in single knife D50 and
D60 Harvest Headers, proceed as follows:
a. Stroke the sickle so that the sickle sections are
spaced midway between the guards.
b. Remove the two nuts (A) and bolts that attach
guard (B) and hold-down (C) (if applicable) to the
cutterbar.
c. Remove the guard, hold-down, and poly wear
plate (if installed).
d. Position new guard and poly wear plate (if
applicable) on cutterbar, and install carriage bolts.
IMPORTANT
The first four outboard guards on drive
side(s) of the header do not have a
ledger plate. Ensure that the proper
replacement is installed.
e. Install hold-down, and secure with nuts. Tighten
nuts to 50 ft·lbf (68 N·m).
f. Check and adjust clearance between hold-down
and sickle. Refer to Section 8.7.7 Sickle Hold-
Downs.
C
A
B
DOWNWARD ADJUSTMENT
UPWARD ADJUSTMENT
DRIVE SIDE NORMAL END