Section 1: Assembly & Set-up
RCB(M)5710 & RCB(M)L5710 Rotary Cutters 337-049M
7/9/20
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Purge Hydraulic System
DANGER
!
To prevent serious injury or death:
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
!
To prevent serious injury or death:
Be sure center and wing decks are lowered to the ground and
all hydraulic pressure is relieved before disconnecting any
hydraulic lines or fittings to purge the hydraulic system.
It may be necessary to purge the hydraulic system of
trapped air. Cycle wing and deck lift cylinders back and
forth several times to purge air from them and to
determine if they operating sluggish. Purge any cylinder
of air that continues to operate sluggish.
Purge Wing Fold Cylinder
Refer to Figure 1-29:
1. Lower center deck until it is supported by flip
spacers (#5).
2. Lower the wing deck until it is resting on the ground.
3. Shut tractor down before dismounting according to
4. Slightly loosen hydraulic hose fitting (#2) on
wing cylinder (#1) to allow air to escape.
5. Restart tractor and slowly activate tractor control
lever to retract wing cylinder (#1), and to purge
trapped air from the hydraulic system.
6. Once all air has been purged from the hydraulic
system, shut tractor down once more according to
7.
Tighten hose fitting (#2) on cylinder (#1).
Deck Lift Cylinders
Refer to Figure 1-29:
WARNING
!
To prevent serious injury or death:
Stay clear from underneath the cutter and directly behind
transport tires. The cutter could fall suddenly causing the
decks to lower and tires to roll back.
1. Move tractor control lever to extend hydraulic lift
cylinders (#3) & (#6). Extend until pressure against
flip spacers (#5) has been eliminated.
2. Without relieving hydraulic pressure, shut tractor
down before dismounting according to
3. Move flip spacers (#5) from the closed position to the
open position as shown.
4. Restart tractor and retract center deck and wing lift
cylinder until it is fully retracted.
5. Shut tractor down before dismounting according to
6. Move tractor control levers back and forth to relieve
all hydraulic pressure.
7.
Slightly loosen hydraulic hose fitting (#4) on deck lift
cylinder (#3) to allow air to escape.
8. Restart tractor and slowly activate tractor control lift
lever to extend lift cylinders (#3) & (#x) to purge
trapped air from the hydraulic system.
9. Once all air has been purged from the hydraulic
system, shut tractor down before dismounting
according to
10. Tighten hose fitting (#4) on deck lift cylinder (#3).
Purge Wing & Center Deck Cylinders
Figure 1-29
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