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Maintenan e
Clean all existing grease from the axle and the hub
and wash in solvent. Insert new rear seal.
Pack the two new bearings with grease prior to
fitting on the axle. nsure grease has penetrated
completely through the bearing.
Slide new inner bearing onto shaft. Place hub back
onto axle and fill cavity with grease. Insert new outer
bearing. it washer and do nut up firm.
Perform the pre-load test on the hub to determine
how tight to set the nut. Grease the hub until grease
emerges from the seal.
The pre-load needs to be 12 Kg. This test is
performed by tying string or rope to a stud and
wrapping it around the outside of all the studs. With
a set of tension scales connected to the rope, pull
the scales. The hub should begin to rotate at 12 Kg.
Tighten or loosen the nut to achieve the required
setting. Fit split pin and bolt the bearing dust cap in
place.
Changing Wheels
REMOVING A WHEEL
• The sprayer must be hitched to the appropriate
towing vehicle.
• The engine of the towing vehicle must be turned
off and the park brake applied.
• Chock the wheel(s) that is/are not to be removed
with an appropriate item to prevent the sprayer
from moving.
• With a wheel nut wrench, loosen all the wheel
nuts on the wheel that you wish to remove (Do
not remove wheel nuts until the tyre is off the
ground).
Place a ack on level, firm and stable foundation
under the sprayer axle and between the two axle
bolts near the wheel to be removed. The jack
may need to have a large piece of timber or steel
placed under it so that the jack will not sink.
• Use the jack to raise the sprayer axle such that
the wheel is off the ground.
• Place an auxiliary jack block under the sprayer so
that if the jack fails the sprayer will not fall.
• Remove all wheel nuts and remove wheel from
sprayer. Be careful that the wheel does not fall on
any person and cause bodily harm.
Prairie Pro Operator's Manual MY19 - REV 2
eneral
• Ensure that the sprayer is stable when being left
REFITTING A WHEEL
• Make sure the sprayer is stable when supported
• Make sure the wheel is in a satisfactory condition
• Clean the surface between the wheel and the
• Carefully lift repaired/new wheel up so that the
• Carefully put the wheel nuts on and tighten them
• With a wheel nut wrench tighten wheel nuts
• Remove the jack block from under the sprayer.
• Carefully lower the sprayer slowly with the jack
• Retighten the wheel nuts to the required torque
• Let the jack completely down so that all weight
• Remove wheel chocks that were placed to the
• Check tyre pressure before moving sprayer.
• Retighten wheel nuts to the required torque
for an extended period of time.
with the jack and the jack block in place and
hitched to the appropriate towing vehicle.
to use and that the tyre is inflated to the correct
tyre pressure.
hub.
holes in the rim centre go over the wheel studs
on the wheel hub.
finger tight.
alternately and evenly to a torque rating of 320 ft/
lb.
until the tyre touches the ground.
rating.
is taken off the jack and remove jack (and any
supports placed under the jack) from under the
sprayer.
front and rear of the opposite wheel (to prevent
it from moving).
rating: One hour after fitting the tyre, before filling
main spray tank, after the first tank load.
Chapter 10 - Lubrication & Maintenance -
Continued over page
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