Nozzle Tubes And Fittings; Wheel Nuts And Bearings Adjustment - Hardi ATV Series Operator's Manual

6.3 Nozzle Tubes And Fittings

Poor seals are usually caused by:
• Missing O-rings or gaskets
• Damaged or incorrectly seated O-rings
• Dry or deformed O-rings or gaskets
• Foreign materials
Therefore, in case of leaks; DO NOT overtighten (Fig. 15). Disassemble,
check condition and position of O-ring or gasket, clean, lubricate and
reassemble. For radial type seals (O-ring)(Fig.15) hand tighten only, do
not use pliers.
The O-rings need to be lubricated ALL THE WAY AROUND before fi tting
on to the nozzle tube.
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HARDI recommends using a vegetable based oil to prolong the life of
the O-ring.

6.4 Wheel Nuts And Bearings Adjustment

WARNING: BLOCK WHEELS ON TRAILER TO PREVENT ROLLING.
Check wheel bolt tension after the fi rst 8 working hours, hereafter every
50 hours. Torque wheel nuts to 85 ft. lbs. maximum.
Check bearing for slack after the fi rst 8 hours of operation and again after
50 hours of operation. Thereafter every 100 hours. (Fig. 16)
If necessary, adjust as follows:
1. Jack sprayer up. It is best
to remove the wheel. (Make
sure to adequately support
the sprayer and completely drain
tank.)
2. Remove hub cap and cotter pin.
3. Axle nut is tightened until slight rotation
resistance of hub is noted.
4. Now loosen axle nut until fi rst split pin hole is visible.
5. Insert cotter pin, fold and replace hub cap.
Af ter 1000 hours or once a year, the axle bear ings should be repacked
with new grease.
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HARDI ATV SPRAYER DIAPHRAGM OPERATOR'S MANUAL
Fig. 15
Fig. 16
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