Purge Hydraulic System - Land Pride RC2512 Operator's Manual

Section 1: Assembly & Set-up
Unfolding Wing Decks
!
DANGER
raise center deck and wings fully up with hydraulics before
removing transport lock bars (#1 & #2 in Figure 1-6) from
shipping position. Never be in an area where the wings will
fall while removing transport lock bars and make sure no one
is in the area where the decks will unfold. The wings can drop
suddenly rendering the cutter inoperable and causing serious
bodily injury or death.
Refer to Figure 1-6:
1. Connect hydraulic hose to tractor outlet and raise
center deck and wings fully up with control lever. With
gear selector in park, shut tractor engine off, set park
brake, and remove switch key.
2. Stand where wings cannot pinch you as they unfold.
Separate transport lock bars (#1 & #2) from each
other by removing bolt (#3).
3. Remove hairpin (#4) from storage pin (#5).
Refer to Figure 1-7:
4. Rotate right transport lock bar (#1) up to storage
bracket (#6). Secure with existing hairpin (#4).
5. Repeat steps 3 and 4 for left transport lock bar (#2).
IMPORTANT: Watch hydraulic hoses as the wings
lower to be sure they don't catch causing hoses to
stretch and pull loose from the hydraulic cylinders.
6. Start tractor and lower cutter wings down until resting
on the ground.
7. Cycle folding cylinders back and forth several times
to purge air from the cylinders. For additional details,
see Purge Hydraulic System? below.

Purge Hydraulic System

!
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.
Purge center deck cylinder first, a wing folding cylinder
second, and then the other wing folding cylinder last:
1. With center deck skid shoes resting firmly on the
ground and wings lowered to the ground, shut tractor
off and move hydraulic control lever back and forth to
relieve hydraulic pressure on all three cylinders.
14 RC2512 Rotary Cutter 330-725M
Table of Contents
2. Loosen hydraulic hose fitting at the center deck
cylinder slightly to allow air and fluid to escape.
3. Restart tractor and slowly activate tractor control
lever to extend and retract center deck cylinder to
purge trapped air from the hydraulic system.
4. Retighten hose fitting at the center deck cylinder
after all air is purged from the cylinder.
5. Repeat steps 1 to 4 to purge the right-hand wing
cylinder only this time loosen and retighten the
hydraulic hose fitting at the right wing cylinder.
6. Repeat steps 1 to 4 to purge the left-hand wing
cylinder and this time loosen and retighten the
hydraulic hose fitting at the left wing cylinder.
2
Remove Shipping Bar With Transport Locks Set
Transport Lock Removed & Secured for Field Work
1
3
Figure 1-6
6
4
1
Figure 1-7
4
5
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3/27/15