MacDon R85 Rotary Disc 13 Foot - Manual (Page 90)

MAINTENANCE AND SERVICING
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Revision C
7.5.5 Accelerators
Two accelerators are mounted on each disc, and
are designed to quickly move the cut material off
the disc and into the auger and 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. Engage header lift cylinder locks.
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.
7.5.5.1 Replacing Accelerators
a. Raise header fully, shut off engine, and remove
key.
b. Engage lift cylinder lock-out valves.
c. Remove disc. See Section 7.5.3.1 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
counterclockwise 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
7.5.3.1 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