Specifications

mild detergent and/or mild degreaser. A quality spray-on wheel
cleaner may also be used. Ensure that any product used is
specifically indicated for use on aluminum. (Many cleaners are
too harsh and will result in pitting or other damage to the wheel
surface.) Many car washes use strong chemicals and should be
avoided when that is the case.
Removing road film, contaminants and brake dust (all of
which retain moisture) is critical to ensuring that the wheels will
retain their luster and quality finish for a long period of time. Any
exposure to a hard winter climate, particularly road salt and/or
chemicals, requires immediate cleaning just the same as sub-
mersion in salt water requires immediate cleaning.
NEVER CLEAN HOT WHEELS. Allow wheels to cool or cool
them with running water. If the wheels are too hot, significant damage can occur to the
wheels.
It is also important to seal the wheels with a sealant that reduces static and resists
brake dust. Check at an automotive supply store for an appropriate sealant.
lug nuts or Wheel bolts
Loose wheel mounting nuts (lug nuts) can cause more than just an annoying wheel
wobble—it’s possible to lose a wheel. Before each trip check for loose or missing lug nuts/
wheel bolts.
When tightening the lug nuts, use the correctly sized wrench. The wrong size can
round off the lug nuts and render them useless. If you lose a lug nut, replace it promptly.
The correct size varies with different models, so verify the proper size with an authorized
MasterCraft dealer.
Take special care to ensure that the replacement lug nut is the correct type. While the
threads of the lug nut may match, it may be a size that does not hold the wheel securely
against the hub, even when fully tightened. Be certain a replacement lug nut is an exact
match for the original.
• Ensuringthatlugnutsontrailerwheelsaretightandproperlytorquedisanimpor-
tant responsibility that trailer owners and users need to be familiar with and practice.
Inadequate and/or inappropriate lug nut torque (tightness) is a major reason that lug
nuts loosen during use. Loose lug nuts can rapidly lead to a wheel separation, with
potentially serious safety consequences.
• Checkthelugnuttightnessoften,especiallyduringthefirstfewhundredmilesofthe
trailer’s use. You should always check torque at the beginning of any long trip and
every time a wheel is removed.
• Youmustuseatorquewrenchtoaccuratelyindicatetheamountoftorquethatyouare
applying to the lug nut. Four-way wrenches, ratchets, and similar tools can be useful
for short-term emergency repairs but are not appropriate tools for accurately checking
lug nut torque.
• Keep a record of the date and approximate mileage when the lug nut torque is
checked. Note any lug nut(s) that lost torque. Investigate the reason(s) if the lug nut
torque is not maintained over more than one re-torque application because this indi-
cates there is something potentially wrong with the lug nuts, nut studs, wheels and/or
hubs and that should be corrected.
• ContactanauthorizedMasterCraftdealerimmediatelyifanypersistentlugnutloosen-
ing (or any other lug, wheel or axle problem) occurs.
• Intheeventofawheelseparatingfromthetrailerduringuse,notifyanauthorized
MasterCraft dealer. Seek prompt professional assistance in assessing the trailer and its
MasterCra Trailer Manual • Page 12