Section 1: Assembly & Set-up
11/2/18
17
4. Adjust tractor drawbar height and length if driveline
interferes. See
correct placement of tractor drawbar.
5. It may be necessary to purge lift cylinder, wing
cylinders, and hydraulic hoses of trapped air if
operation is sluggish. Cycle cylinders back and forth
several times to purge air from them. For additional
details, see
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.
Purge center deck cylinder first, right-hand wing folding
cylinder next, and left-hand 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 levers back and forth
several times to relieve hydraulic pressure on all
three cylinders.
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. Tighten 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 re-tighten 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 re-tighten hydraulic
hose fitting at the left wing cylinder.
Lift Cylinder Mounting Position
NOTE:
The rod end of lift cylinder (#4) must be
attached to the correct lug hole (“A” or “B”) before
the cutter can raise and lower properly through-out
all its cutting height ranges.
1.
Verify rod end of hydraulic lift cylinder (#4) is pinned
to the correct hole:
•
Pin rod end to upper hole “A” when cutter is
supplied with 29" aircraft tires.
•
Pin rod end to lower hole “B” when cutter is
supplied with 21" laminated tires.
2. If hydraulic lift cylinder is pinned in the wrong
hole, fold wings up with tractor control lever and
set transport locks. See
3. Using tractor control lever, fully extend hydraulic
cylinder (#4) and remove all stroke spacers (#3) from
hydraulic lift cylinder.
4. Place minimum 5" high support blocks under the four
corners of the center deck and with tractor control
lever, lower cutter down onto the support blocks.
5. Place gear selector in park, shut tractor engine off,
set park brake, and remove switch key.
6. With cutter tires resting on the ground, move tractor
control lever for the hydraulic lift cylinder (#4) back
and forth to release all hydraulic pressure in hydraulic
cylinder (#4).
7.
Pull hairpin cotter (#2) and remove clevis pin (#1).
8. Reconnect cylinder rod clevis as follows:
Cutters With 29" Aircraft Tires
Jack center axle up or extend hydraulic cylinder (#4)
until clevis holes aligns with upper hole “A”.
Cutters With 21" Laminated Tires
Retract hydraulic cylinder (#4) until clevis holes align
with lower hole “B”.
9. Reinsert clevis pin (#1) and secure with hairpin cotter
(#2).
10. Raise cutter back up and remove all support blocks.
11. Do not reinstall stroke spacers (#3) at this time.
Lift Cylinder Mounting Position
Figure 1-10
35245
For Cutters with
29" Aircraft Tires
For Cutters with 21"
Laminated Tires