MacDon R85 Rotary Disc 13 Foot Pull-Type - Manual (Page 75)

MAINTENANCE AND SERVICING
Form 169454
73
Revision A
7.8.5 Accelerators
Two accelerators are mounted on each disc,
and are designed to quickly move the cut
material off the disc and into the conditioner.
They are replaceable, and should be periodically
inspected for damage and loose or missing
fasteners.
DANGER
Stop engine, and remove key from ignition
before leaving Operator's seat for any
reason. A child or even a pet could engage
an idling machine.
a. Raise header fully, stop engine, and remove
key.
b. Close header lift cylinder valves.
c. Open cutterbar doors.
CAUTION
Cutter blades have two cutting edges.
Exercise caution when working around the
blades. Blades are sharp and can cause
serious injury. Wear gloves when handling
blades.
d. Inspect accelerators for damage and wear. They
should be replaced if severely damaged or worn.
e. Check for loose or missing fasteners, and
tighten or replace fastener if missing.
7.8.5.1 Replacing Accelerators
a. Raise header fully, shut off engine, and remove
key.
b. Engage lift cylinder lock-out valves.
c. Remove disc. See Section 7.8.3.1 Disc
Removal/Installation.
d. Remove bolt and nut (A) and nut (B), and
remove accelerator (C) from disc (D).
IMPORTANT
Do not remove cutter blade bolt unless it
or the blade are being replaced. Repeat
for other accelerator.
e. Locate new accelerator on disc onto existing
cutter blade bolt. Install nut (B).
NOTE
Accelerators are handed for clockwise or
counter clockwise operation. Verify the
direction of disc before installing
accelerators.
f. Install hex bolt (A) and nut at inboard hole. Bolt
head faces “up”.
g. Tighten both nuts to 100 ft·lbf (135 N·m).
h. Repeat for other accelerator.
i. Re-install disc (D) on spindle. Refer to Section
7.8.3.1 Disc Removal/Installation.
j. Remove block of wood (if used).
WARNING
Ensure cutterbar is completely clear of
foreign objects. These objects can be
ejected with considerable force when the
machine is started, and may result in
serious injury or machine damage.
k. Close cutterbar doors.
A
B
C
D
DISC ROTATION