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Section 3: Operating Instructions
7/31/20
RC4620 & RCM4620 Rotary Cutters 331-936M
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1. Make sure cutter blades are not locked against each
2. Remove support blocks or jack stands and set
transport locks for field operations. See
3. Lower cutter until skid shoes are 2" off the ground.
4. Start tractor and set throttle speed just above idle.
Use tractor’s power take-off soft start option if
available. Slowly engage power take-off to get blades
5. Initial start-up vibration is normal and should stop
after a few revolutions. Stop power take-off rotation
immediately if vibration continues.
6. Once cutter is running smoothly, increase throttle to
full power take-off speed. If cutter vibrates
excessively for 3 seconds at full speed, immediately
disengage power take-off, shut tractor down properly,
and remove switch key.
7.
Block center deck up before working under cutter.
8. Check blades for a locked-up situation. Unlock
blades if locked-up.
9. Check for other probable causes such as broken or
bent blades, loose blades, loose gearbox mounting
bolts, and bent driveline.
10. Taking proper precautions, make necessary repairs
and adjustments.
11. Repeat steps 1-10 above to verify vibration problems
are fixed before putting cutter back into service.
Transport Bar, Storage Position
Figure 3-2
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Transport Locks
Cutter wings will need to be raised and locked before
transporting on a roadway or servicing the deck
underside. If cutter wings are down, they will need to be
raised before transporting through narrow openings.
1. Disengage power take-off and wait for cutter blades
to come to a complete stop before raising the wings.
2. Raise cutter wings fully up with hydraulics.
3. Place tractor gear selector in park, shut tractor
engine off, set park brake, remove switch key and
dismount from tractor.
4.
Refer to Figure 3-2:
cotter (#1) from storage bracket (#2).
5.
Refer to Figure 3-3:
Rotate end of transport lock
bar (#3) to clevis pin (#4). Secure lock bar with
hairpin cotter (#1).
6. Repeat steps 4 and 5 for the other wing section.
Transport Bar, Locked Position
Figure 3-3
IMPORTANT:
Always disengage tractor’s power
take-off and wait for blades to come to a complete
stop before raising the wings to transport position.
Wing drivelines, wing gearboxes, and splitter
gearbox can be damaged if driveline is turning.
NOTE:
The wings are controlled with hydraulic
folding cylinders. Be certain that the wing hydraulic
hose is properly attached to the tractor and is full of
oil before proceeding.
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