Section 8 – Inspection, Service & Maintenance
R6 3/30/2017
Page 66
•
Put a new cotter pin through the spindle nut
and axle.
•
Check the adjustments. Both the hub and the
spindle nut should be able to move freely (the
spindle nut motion will be limited by the cotter
pin).
Bearing Lubrication – Oil
If your trailer is equipped with oil lubricated
bearings, check the oil level every 6 months or
6,000 miles, whichever occurs first.
The oil can be filled through the oil fill hole in the
hub or cap. Fill to the level indicated on the hub or
cap.
8.2.15.b E-Z Lube® Bearings
(Standard
Equipment on Axles Rated 8000 lbs.
and Below)
Bearings should be lubricated every 12 months or
12,000 miles, whichever occurs first.
Use only
LITHIUM COMPLEX NLGI
CONSISTENCY #2 GREASE. Other types of
grease may not be compatible.
These hubs and bearings have been lubricated at the
factory. The bearings can be periodically lubricated
without removing the hubs.
Remove the rubber plug and attach a grease gun to
the grease fitting. Apply grease until new grease
comes out around slotted spindle nut. Wipe off any
excess and reinstall the rubber plug.
E-Z Lube® Bearing Shown – Figure 8-5
8.2.15.c Nev-R-Lube™
or
Other
Sealed
Bearings
Bearing should be inspected every 12 months or
12,000 miles, whichever occurs first. Refer to the
axle manufactures manual for information on
checking wheel end play and clearance. See figure
8-6.
Nev-R-Lube™ Bearing Shown – Figure 8-6
8.2.16 Lug Nuts (Bolts)
Lug nuts are prone to loosen right after a wheel is
mounted to a hub. When driving on a remounted
wheel, check to see if the lug nuts are tight after the
first 10, 25 and 50 miles of driving and before each
tow thereafter.
Lug Nut Tightening (Torque)
Being sure wheel mounting nuts (lug nuts) on
trailer wheels are tight and properly torqued is an
important responsibility that trailer owners and
users need to be familiar with and practice.
Inadequate and/or inappropriate wheel nut torque
(tightness) is a major reason that lug nuts loosen in
service. Loose lug nuts can rapidly lead to a wheel
separation with potentially serious safety
consequences.
•
Be certain you have a clear understanding of
the specific wheel maintenance responsibilities
your vehicle manufacturer
requires/recommends you, as the owner, must
perform in order to insure your wheel
equipment is safely maintained. Check the lug
nut tightness the first 10, 25 and 50 miles of
driving and before each tow thereafter. Refer to
the owner’s manual and speak with your dealer
if you have any questions about proper
tightening practices.
•
The only way to be certain you have checked
the tightness or torqued the lug nuts to the
proper value is with a torque wrench. 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. You must use a
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