2017 OWNERS MANUAL /
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• When the grease appears to be the new clean grease, remove the
grease gun.
• Replace the Vortex grease cap. With the threaded cap, turn in a
clockwise rotation until the o-ring on the cap is in contact with
the hub surface. Turn an additional one-quarter (1/4) turn to seal
the Vortex cap to the hub. (Similar to installing an oil filter in an
automobile.) On the press-in style cap, tap it on until fully seated.
Be careful to avoid damaging the cap while re-installing.
If the bearings need to be adjusted or replaced, the work should be
done only by an authorized MasterCraft dealer. Failure to contact
MasterCraft for preapproval during the warranty period will void the
warranty.
The wheel bearings have been precisely torque-set at the factory.
To assure the bearings are in good working order, check the bearing
adjustment at least once a year by following this procedure:
• Jack up one side of the trailer. (Be certain to use jack stands and
use chocks on each of the trailer wheels to keep the trailer from
moving during the inspection.)
• Grip the edge of the tire and see if it can be rocked or moved. If
the outer edge of the tire moves more than a small amount, the
bearings may need to be readjusted.
A slight amount of oil seepage at the rear seal is normal and nec-
essary to lubricate the wiper lip of the seal for long life and sealing
contaminants out. If excessive leakage is occurring however, con-
tact an authorized MasterCraft Dealer for assistance.
Hubs, Wheel Bearings, Axles
And Lubrication
Trailers equipped with Tie Down Engineering actuators are also
equipped with Vortex hubs and spindles. The hubs are pre-greased
and assembled at the factory. As a result, they should not require
any additional adjustments. The Vortex hub uses tapered roller
bearings adjusted to a maximum .006 end play. The twelve-sided
castle nut easily maintains this maximum .006 end play. The config-
uration requires a minimal amount of end play that is factored in at
the time of assembly.
The rear seal rides on a stainless steel wear sleeve. This provides
longer life for the seal as the surface does not corrode. Corroded
or rusted seal surfaces act like sandpaper on the seal, causing
premature seal failure. Every reasonable attempt has been made to
prevent this.
Wheels
Trailer wheels and tires require more attention than the wheels
on a family vehicle because they are regularly exposed to water.
The three major items to check are: lug nuts, lubrication and tire
pressure.
Maintain the proper torque on the lug nuts attached to the wheel
bolts. Failure to do so may result in serious injury or death and/or
property damage. An authorized MasterCraft dealer can provide
the proper torque specifications (measured in foot-pounds).
Keep the wheel bearings lubricated. Inspect the wheel bearings
for proper lubrication before each use. Failure to do so may cause
wheel failure and possible wheel loss, which may result in serious
injury or death and/or property damage.
Aluminum wheels also require attention to routine maintenance,
particularly in keeping them clean. Failure to do so may result in
damage that is not covered by warranty.
The trailer and wheels should be washed weekly during boating
season, and after every use if the trailer has been submerged in
salt or brackish water. Use a soft brush, mild detergent and/or mild
degreaser. A quality spray-on wheel cleaner may also be used.
Vortex lubrication makes changing or adding grease easy because
the hub does not need to be removed. Most axles have a threaded
grease cap, and it is easy to remove and replace.
Vortex requires Lucas Oil Marine grease, a premium lithium-based
complex grease that is fortified with rust and oxidation inhibitors,
and high-pressure additives that provide a high degree of moisture
resistance and wash-out properties.
Use only Lucas Oil Marine Grease when adding or replacing grease
in the Vortex hub. Using any other grease will void the warranty.
Adding Grease Or Removing Hubs
The Vortex hub/spindle is designed to be a no-maintenance hub for
six (6) years. Remove the Vortex grease cap, unscrewing threaded
caps in a counterclockwise rotation. On the press-in style caps, sim-
ply remove the rubber plug in the center to grease the bearings, or
knock gently with a hammer, preferably a rubber mallet, if removing
the entire hub.
Use a standard grease gun loaded with Lucas Oil Marine Grease
to pump the grease into the zerk fitting located on the end of the
spindle.
• Pump the grease into the zerk fitting while slowly rotating the
wheel. Grease will flow out of the hub around the front bearing.
Содержание NXT20 2017
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Страница 107: ...2017 OWNERS MANUAL 208 BOAT OPERATIONS ...
Страница 158: ...2017 OWNERS MANUAL 310 PREPARATION ...
Страница 172: ...2017 OWNERS MANUAL 338 CAREAND MAINTENANCE ...
Страница 204: ...2017 OWNERS MANUAL 402 TRAILERS ...