Specifications
Lubrication
Currently, trailers feature oil-bath bearings. Earlier models were
equipped with easy lubricating hubs. However, water invades and seeps
through the smallest of openings. When a warm hub is submerged in
cold water, any air inside the hub will contract and draw water through
the best of seals.
Trailers equipped with the Bearing Buddy II with Auto Check simplify
the process of keeping watch for proper lubrication. If the blue ring
is fully extended (about 1/4-inch extruded), you will have adequate
lubrication. As the grease dissipates, the ring will move back into the
shell. When the blue ring is ush with the Bearing Buddy shell, it is time
to re-lubricate.
Your best protection against wheel bearing damage from the water is
to always keep your wheel assembly properly lubricated. Periodically,
view the sight window located on the axle hub and determine whether
the lubricant appears milky. This would indicate water intrusion and the
lubricant should be replaced. Also check the seals for damage. When on
a trip, make it a habit to check the wheel hubs every time you stop for
gas or refreshments. If the hub feels abnormally hot, the bearings and
brakes should be inspected before continuing your trip.
Wheel Bearings and Braking System
Wheel bearings and the braking system on the trailer should be in-
spected annually. If the bearings or bearing race show signs of scoring,
they should be replaced, as well as any worn brake parts. Your Master-
Craft dealer should perform this inspection and repair.
lubrication
Tires
The most common cause
of trailer tire trouble is un-
der-ination. It is important,
therefore, that you always
maintain correct air pressure
as indicated by the tire man-
ufacturer on the tire’s side-
walls. Always check the air
pressure when the tires are
cold. Tires heat up and the
air pressure increases after
traveling short distances.
MasterCraft Trailers - Page 16
tires
wheel bearings & Brakes