Land Pride RC4615, Operator'S Manual

Page: 28 / 68

Section 1: Assembly & Set-up
Table of Contents
8/22/23 RC4615 & RCM4615 Rotary Cutters 331-644M
24
Wing Fold Cylinder
Refer to Figure 1-19:
1. Lower center deck until it is supported by stroke
control spacers (#6) on hydraulic cylinder (#4).
2. Lower wing decks until they are resting on the
ground.
3. Refer to “Tractor Shutdown Procedure” on page
16. Shut tractor down properly and move wing control
levers back and forth to relieve all hydraulic pressure.
4. Slightly loosen hydraulic hose fitting (#2) at right-
hand 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. Repeat steps 1-3 above once air is purged from the
right-hand wing cylinder.
7. Tighten hose fitting at the right-hand wing cylinder.
8. Repeat steps 4-7 above to purge the left-hand wing
cylinder (#3).
Deck Lift Cylinder
Refer to Figure 1-19:
1. Lower center deck until it is supported by stroke
control spacers (#6) on hydraulic cylinder (#5).
2. See “Tractor Shutdown Procedure” on page 16.
Shut tractor down properly and move deck lift control
lever back and forth to relieve all hydraulic pressure.
3. Slightly loosen hydraulic hose fitting (#5) at deck lift
cylinder (#4) to allow air to escape.
4. Restart tractor and slowly activate tractor control lift
lever to extend lift cylinder (#4) and to purge trapped
air from the hydraulic system.
5. Repeat steps 1 & 2 above once air is purged from the
deck lift hydraulic system.
6. Tighten hose fitting (#5) at lift cylinder (#4).
Purge Wing cylinders & Deck Lift Cylinder
Figure 1-19
37910
Driveline Clearance Check
Check driveline for adequate clearance under all ranges
of cutter height.
1. With driveline shaft attached to the tractor and all
stroke control spacers (#2 in Figure 1-20 on page 25)
removed from hydraulic cylinder (#1), slowly raise
and lower cutter to its upper and lower limits while
observing clearances between hitch and driveline.
Adjust tractor drawbar height and/or length if
driveline interferes. See Figure 1-1 on page 14 for
correct drawbar dimensions.
2. It may be necessary to purge lift cylinder, wing
cylinder, and hydraulic hoses of trapped air if
operation is sluggish. Cycle cylinders back and forth
several times to purge air from them. Purge hydraulic
system of air if any of the cylinders continue to
operate sluggish. See
“Purge Hydraulic System”
on page 24.
Purge Hydraulic System
DANGER
!
To avoid 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 avoid 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.