ThetrailerisequippedwiththeVAULTbearingprotector.TheVAULTusesonlyHybridOil™
lubricant,whichcombinesthebenetsofoilandgrease.TheVAULTprotectsthe
wheelbearingsinasealed,pressurizedchamberthatisunaectedbyoutside
elements.Foroptimalperformance,onlyUFP’sHybridOilLubricantshouldbe
used in this system.
Thesystemhasanumberofuniquefeaturesnotfoundonconventionaltrailer
axles.Everypossibleleakpointonthefrontandrearofthehubissealed.The
slight pressure inside the hub is needed to keep water out of the hub chamber
when the hub is submerged underwater during loading and unloading.
Inspectionorreplenishmentofthelubricantisnotrequiredaspartoftherou-
tine maintenance.
AddingorchangingthelubricantintheVAULTsystemisneithernecessarynor
recommendedduringtherstveyearsofservice.Afterthattime,themainte-
nancerequirementsshouldbeundertakenonlybyan
authorizedAxisdealerandonlythelubricantspeci-
edaboveshouldbeused.
If the bearings need to be adjusted or replaced, the
workshouldbedoneonlybyanauthorizedAxisdeal-
er.FailuretocontactAxisforpre-approvalduringthe
warranty period will void the warranty.
Thewheelbearingshavebeenpreciselytorque-set
atthefactory.Toassurethebearingsareingood
working order, check the bearing adjustment at least
onceayearbyfollowingthisprocedure:Jackupon
one side of the trailer. (Be certain to use jack stands
and check the trailer wheels to keep the trailer from
movingduringtheinspection.)Griptheedgeofthe
tire and see if it can be rocked or moved. If the outer
edgeofthetiremovesmorethan1/8”,thebearings
may need to be readjusted.
A slight amount of oil seepage at the rear seal is normal and necessary to lubricate the wiper
lipofthesealforlonglifeandsealingcontaminantsout.Ifexcessiveleakageisoccurring,how-
ever,contactanauthorizedAxistrailerdealer.
Because the wheels and hubs
will be submerged in water at
times,theyrequiremoreat-
tention than those found on a
toworregularvehicle.Wheels
should be regularly washed
with mild soap or detergent to
retainthenishandremove
any corrosive elements. Never
use harsh detergent or scrub
brushes that can damage the
appearance. If the boat is stored in an area that
experiencessnow,Axishighlyrecommends
periodically checking and cleaning the wheels
during the winter. Salt and chemical treat-
ments used to remove snow and ice from roads
and parking lots can settle on the wheels and
causedamagetothenish.Suchdamageisnot
covered under warranty.
Axis
Owners
Manual
2019
Page 122
axles
wheels
and
hubs