Gason NT8000, Operator'S & Parts Manual

Page: 22 / 63

Maintenance & Service
18

If the implement is covered in mud, clean
with a high-pressure water jet cleaner.

Store machine on firm ground, ideally un-
der cover.

Float all Hydraulics before unplugging from
tractor to relieve pressure from each cir-
cuit.

Protect exposed hydraulic cylinder rods by
applying light grease on the rods.
Tyre Care
For optimum tyre performance, tyre pressures
should be checked and maintained regularly.
Under-inflation may cause tyres to slip on rims
or over flex and over heat, whereas over-infla-
tion reduces both the flotation effect of tyres
and the resistance to punctures. Tyre pres-
sures may need to be varied depending on soil
conditions.
Equal tyre pressure across the width of an im-
plement is critical to ensure even load distribu-
tion and to maintain stable tracking.
When working the NT8000, tyres should be in-
itially inflated to 275KPa (40PSI) (cold).
When road transporting the NT8000 for ex-
tended distances (more than 5km), centre
frame tyres should be inflated to 410KPa
(60PSI) (cold).
Bush Replacement
For pivots using chrome steel pins and steel or
phosphor-bronze bushes, follow the proce-
dure below:
Removal and installation of the bush must be
done as follows: -
1.
Remove worn bush from its housing.
2.
Check for damage, clean and degrease
the housing internal diameter and the new
bush external diameter with a contact cleaner
or Loctite 770.
3. Allow to dry.
4. Apply a light coating of Loctite 609 or
620, or similar, retaining compound to the
leading chamfered edge of the replacement
bush external diameter only.
5. Press fit into housing until flush.
Important: Take extreme care not to damage
or remove the inner surface of the bush. Ensure
no adhesive contacts the bush’s inner surface.
Wheel Bearing Maintenance
Wheel bearings should be checked at the end
of each working season and adjustments made
when necessary.
To check and adjust wheel bearings: -
1.
Raise wheels, and support, to facilitate
rotation.
2. Check for endplay by pulling back and
forth on wheel.
3.
If bearing endplay is present, remove
hubcap and split pin.
4.
Tighten slotted nut whilst rotating wheel
until resistance locks hub.
5.
Back off the slotted nut one full turn.
6.
Retighten until nut locks up and back off
to nearest slot in nut, but no more than
30°.
7.
Rotate the wheel. There should be only
a slight drag.
8.
Replace the hubcap.
9. Grease hub via grease nipple. Be careful
not to over grease as this may dislodge
the seal behind the inner bearing.