Harbor Freight Tools Foldable Utility Trailer 90154 - Manual (Page 24)

Page 24 For technical questions, please call 1-800-444-3353. Item 90154
SAFET
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M
AINTENAN
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Maintenance
procedures not specifically explained in this manual must
be performed only by a qualified technician.
TO pREVENT SERIOUS INJURy FROM TOOL FAILURE:
Do not use damaged equipment. If abnormal noise or vibration
occurs, have the problem corrected before further use.
Note: Tow vehicles often have more frequent maintenance requirements, including changes of
engine and transmission oils and filters, lubrication of components, and cooling system checks.
Check your owner’s manual for information on scheduled maintenance of your tow vehicle.
bEFORE EAcH USE: Inspect the trailer and tow vehicle according to the instructions on page 16.
Tires
1. Periodic inspection and maintenance of tires
and wheels are essential to towing safety,
including spare tires. Proper tire pressure affects
vehicle handling and the safety of your tires.
You can find the correct tire pressure for your
tow vehicle on the tire information placard.
2. Underinflation reduces the load-carrying capacity
of your tow vehicle or trailer, may cause sway and
control problems, and may result in overheating,
causing blowouts or other tire failure.
3. Overinflation causes premature tire wear
and affects the handling characteristics
of the tow vehicle or trailer.
Wheel bearings
1. EVERy 2,000 TO 3,000 MILES OF USE, lubricate the
Hub Assemblies with a heavy weight bearing grease,
follow bearing packing Instructions on page 9.
2. After each Hub Assembly is reassembled,
tighten the Castle Nut until the wheel
starts spinning with slight resistance.
Loosen the Castle Nut about 1/6 turn from this point.
3. Insert a new Cotter Pin through the
Castle Nut and the hole in the axle.
4. Bend the Cotter Pin back,
locking it and the Nut in place.
Hitch
Check the nuts, bolts, and other fasteners to ensure that the hitch remains secured to the
tow vehicle and the coupler remains secured to the trailer. The connection point may require
periodic lubrication to permit free movement of the coupler to the hitch ball.
Wiring
1. Make sure connector-plug prongs and receptacles,
light bulb sockets, wire splices, and ground
connections are clean and shielded from moisture.
Lightly coat all electrical terminal connections with
nonconducting (dielectric), light waterproof grease.
2. Clean the prongs with very fine sandpaper,
being careful not to damage the contact area.
3. Turn lights off, then clean the surface deposits
in the connector holes.
Try to clean off only the deposits and lubricate
lightly with dielectric, light waterproof grease.