Norwood Kwik-Till HSD2500, Operator'S Manual

Page: 121 / 154

5 - MAINTENANCE
5-29
ANNUALLY
Check Accumulator
1. Unfold the machine into the Field Position .
(See “Kwik-
Till Folding & Unfolding” on page 4-11)
2. Lower the disks to the ground by retracting the Front
Wheel Cylinders
A
and Rear Roller Cylinders B .
(See Fig. # 5-40)
A
B
Fig. # 5-40 Lower Disks to the Ground
3. Relieve all the hydraulic pressure by placing the tractor
SCV levers to the FLOAT POSITION with engine
running for the Main Frame Lift & Wing Fold cylinders.
4. The machine should now be in the “Field Lowered Po-
sition”
(See Fig. # 3-53)
.
WARNING
Only qualified and trained personnel should perform this
procedure. Always wear personal protective equipment.
WARNING
HIGH PRESSURE VESSEL
Avoid injury from high pressure escaping
hydraulic fluid.
• Relieve pressure from hydraulic system before
servicing
• Precharge with dry nitrogen gas only.
Failure to comply could result in serious injury or
death.
5. The accumulator pressure should be checked annually.
6. Operational dry nitrogen pressure levels are between
700-800 psi (4826-5516 kPa) (48.3-55.2 bar). If levels
are below this range, recharge the accumulator with dry
nitrogen.
7. If pressure is 0 psi (0 kPa) (0 bar), replace the accumulator
due to an internal bladder rupture.
WARNING
Always use dry inert gas (Dry Nitrogen - N2) for pre-
charging.
NEVER USE AIR OR OXYGEN, DUE TO THE DANGER
OF COMBUSTION / EXPLOSION
A
Fig. # 5-41 Nitrogen Check Port Location