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Section 1: Assembly & Set-up
RCB6610 & RCBM6610 Series 2 S/N 944730+ Rotary Cutters 330-584M
11/11/12
Table of Contents
Purge Hydraulic System
Refer to Figure 1-20:
!
DANGER
Never remove or install a folding wing cylinder with cylinder
rod retracted and wing folded up. The wing is unstable without
its folding cylinder and can suddenly fall. Also, air trapped in
a new or repaired cylinder will drop the wing suddenly when
lowering the wing. Either situation can render the cutter
inoperable and cause serious bodily injury or death.
!
WARNING
Be sure center and wing decks are lowered to the ground and
all hydraulic pressure is relieved before disconnecting any
hydraulic lines or fittings between the Rotary Cutter and
tractor hydraulic system.
Be sure tractor reservoir is filled properly before
operating hydraulic cylinders. If tractor reservoir is low on
hydraulic fluid, there is a chance of drawing air into the
system causing jerky or uneven cylinder movements.
The wing deck lift cylinder may be purged as follows:
Wing Fold Cylinders
1. Start tractor and lower center deck until it is
supported by stroke control spacers (#5) on hydraulic
cylinder (#1).
2. Lower wing deck until it is resting on the ground.
3. See “Tractor Shutdown Procedure” on page 14.
Shut tractor down properly and move wing control
levers back and forth to relieve all hydraulic pressure.
4. Slightly loosen hose fittings (#4) on wing folding
cylinder (#3).
5. Restart tractor and slowly activate tractor control
lever to extend/retract folding cylinder (#3), and to
purge trapped air from the hydraulic system.
6. Shut tractor down properly, dismount, and tighten
hose fittings (#4) on folding cylinder (#3).
Deck Lift Cylinders
Deck lift cylinders are rephasing cylinders and self purge
if tractor control lever is held in deck lift position for and
extended period.
1. Start tractor and slowly activate tractor control lift
lever to extend hydraulic cylinders (#1 & #2).
2. Once cylinders (#1 & #2) are fully extended, continue
to hold control lever in the deck lift position to allow
time for hydraulic oil and trapped air to make a
complete circuit through the hydraulic system.
3. With tractor control lever, lower and raise decks
several times to verify all trapped air is removed and
cylinders (#1 & #2) are operating smoothly.
4. If needed, repeat steps 1 thru 3 until deck left
cylinders operate smoothly.
Purge Hydraulic System
Figure 1-20
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