Wheel Bearing Maintenance; Brakes; Breakaway Switch - Airstream Sport 2017 Owner's Manual

Maintenance

Wheel Bearing Maintenance

1� Jack trailer at marked jack location pad behind axle
on mainframe,
2� Remove hubcap or spindle cover, wheel and tire.
3� Remove cotter pin.
4� Remove dust cap.
5� Remove spindle nut and washer.
6� Remove bearings and hub.
7� Lay down hub with inside grease seal down. Knock
out inner bearing and grease seal using wood or
plastic dowel and hammer.
8� Clean all parts thoroughly with kerosene.
9� Check all bearings and races for chips or
roughness of any kind. Any damaged component
must be replaced.
10� Pack bearing with a good grease (No 2 grade-265
ASTM penetration or equivalent).
11� Install inner bearing.
12� Install new grease seal in hub or rotor using
wooden or rawhide mallet.
13� Install hub and drum on spindle.
14� Install outer bearing.
15� Install washer and spindle nut.
16� While rotating the wheel, tighten the spindle nut
with a 12" wrench until there is a slight tension.
Then back off one notch and install cotter pin.
There should now be from .001" to .010" end play
in hub. If not, back off one notch.
17� Check the lug nuts at 10, 25 miles and recheck at
50 miles of travel. See Specification Section in this
manual for wheel torque ratings.
When packing bearings by hand, place a glob of
grease in the palm of one hand and push the large end
of the bearing down into the grease. Keep turning the
bearing around and forcing it down through the grease
until the grease is extruded up through the opposite
end. Wipe the extra grease in your hand around the
outside of the bearing. It is not necessary to fill the hub
and dust cap with grease.
8-10

Brakes

Due to normal brake lining wear, the brakes and the
controller setting should be checked every six months
or 10,000 miles, whichever comes first.

Breakaway Switch

1� Pin
2� Breakaway Switch
To prevent corrosion within the breakaway switch, pull
the pin out and spray the inside of the switch through
the hole with an electric contact cleaner (such as Spra-
Kleen). Applying a drop of light household oil on the pin
and the groove near the base of the pin will allow the
pin to operate freely. Immediately reinsert pin. Perform
this procedure every 90 days.
CAUTION
Allow no more than 20 to 30 seconds pin
separation as damage to brake magnets may
occur.
2017 Sport