MacDon R1 Series Operator's Manual page 177

NOTE:
Right discs (A) and left discs (B) are slightly offset as shown, depending on which idler gear the spindle is turning:
• Spindles that rotate clockwise have left-leading threading
• Spindles that rotate counterclockwise have right-leading threading
DANGER
To avoid bodily injury or death from unexpected start-up or fall of a raised machine, stop engine, remove key, and
engage lift cylinder lock-out valves before going under machine for any reason.
CAUTION
Disc blades have two sharp cutting edges that can cause serious injury. Exercise caution and wear gloves when working
with blades.
1. Park the machine on a flat, level surface.
2. Lower the rotary disc pull-type fully.
NOTE:
To prevent oil from spilling from the cutterbar while installing disc spindles, ensure the rotary disc pull-type is on a flat,
level surface and is tilted all the way back.
3. Shut down the engine, and remove the key from the ignition.
4. Determine suitable spindle rotation pattern for crop
conditions. For instructions, refer to
Cutterbar Spindles, page
5. Ensure that spindle O-ring (A) is properly seated, cleaned,
and undamaged.
215333
MAINTENANCE AND SERVICING
4.4.5 Replacing
157.
Figure 4.62: R113 and R116 PT Cutterbars
Figure 4.63: Left Spindle O-Ring
161
A
Revision A