Airstream Excella 1975 Owner's Manual page 21

Break A way Switch
In the event of an accidental separation of the
tow car and trailer, the break-away switch is a
device which will set and lock the trailer
brakes for a sufficient length of time to stop
the trailer. The switch is activated when the
small pin in the front of the unit is pulled out
by the wire attached to it and to the car. This
pin should be pulled out, lubricated with light
household oil and replaced every 90 days.
When the trailer is connected to the tow car,
the break-away switch loop should be at¬
tached to the permanent frame of your hitch.
When disconnecting trailer from tow car,
remove wire loop from the frame; do not
remove pin from switch, because this will
apply the trailer brakes.
Brake Adjustment
Adjusting hole.
To tighten, turn
clockwise.
To loosen, turn
counterclockwise.
Airstream recommends that your brake
system be checked and adjusted by a Certified
Service Center. However, in emergencies, to
adjust brakes:
1. Remove the small rubber plug at the base
of the backing plate on the brake drum.
2. Jack the wheel up so that you can spin it
by hand. Tighten the brakes (using a brake
adjusting tool or a screwdriver that has
been bent to a 90° angle) until the wheel
is locked, then back off until you have a
free spinning wheel, which will be approxi¬
mately 8 notches.
3. Repeat this operation with all trailer
wheels.
The optional Tru Track Sway Control is a
single package system which momentarily
applies the trailer brakes when sway develops
as the result of such occurrences as rapid
maneuvers to avoid road obstacles, air dis¬
turbances caused by passing vehicles and
accidental travel on and off the shoulder of
the road. Because of its design, it will not
react to any normal driving maneuver that is
smoothly performed. However, it will inter¬
pret any maneuver that jerks the trailer as an
indication of sway and the restraint felt from
the short brake application will normally alert
the driver to steer with greater care.
An important feature of the system is an auto
dash mounted light which illuminates each
time the sway control applies the brakes. It
also illuminates when the brakes are applied
by the driver in normal braking. The intensity
of the light increases as the braking effort is
increased.
Frequent operation of the Sway Control
indicates that the car-trailer combination is
basically unstable and prone to excessive
sway. The problem should be corrected;
check for improper load distribution in the
trailer, an inadequate hitch, insufficient or
excessive tire pressure, etc.
Important: If at any time dash light remains
on or Sway Control is continually applying
trailer brakes, disconnect Sway Control unit
at power source and correct problem.