Great Plains NTA3010 Operator Manual - Manual (Page 21)

Great Plains Manufacturing, Inc. Table of Contents Index Preparation and Setup 17
2014-03-26 Table of Contents Index 160-219M-A
Bleeding Lift Hydraulics
The lift system is equipped with rephasing hydraulic
cylinders that require a special procedure for bleeding air
from the system. Follow the procedure carefully.
Crushing Hazard:
You may be severely injured or killed by being crushed from a
falling implement. Always have transport locks in place and
frame sufficiently blocked up when working on implement.
1. Check hydraulic fluid level in tractor reservoir and fill
to proper level. Add fluid to system as needed while
cycling new cylinders. A complete cylinder refill
requires about 8
3 ⁄
4
gallons (33 liters) of oil.
2. Support implement frame sections with jack stands
or blocks.
Refer to Figure 12
3.
With frame blocked and supported, unpin rod ends
of wheel cylinders. Pivot cylinders up and wire or
otherwise safely support rod ends higher than base
ends. You may need to remove the gauge-wheel
cylinders from the rockshaft so you can orient them
with rod ends higher than base ends.
4. With the tractor engine at idle speed, energize the lift
hydraulics. When the gauge-wheel cylinders on
wings have extended completely, hold the remote
lever on for one minute. Check all hydraulic hoses,
cylinders and fittings for leaks.
5. Retract the cylinder rods. Extend the rods again and
hold the remote lever on for one more minute.
Repeat this step two more times.
6. Again, check all hydraulic hoses, cylinders and
fittings for leaks. Recheck the tractor hydraulic
reservoir. Fill to the proper level.
7. Re-pin all cylinders.
Bleeding Fold Hydraulics
Before attempting to hydraulically lift the implement, the cart
must be attached to the implement and a tractor of sufficient
size. Failure to do so could result in severe equipment damage
and bodily injury or death.
1. Check the hydraulic fluid level in the tractor reservoir
and fill to the proper level. A complete system refill
requires about 6 gallons (23 liters) of oil.
2. Be sure implement is hitched to cart and tractor. See
“Hitching” on page 12.
Figure 13
Cart Fan Shut off
26419