Airstream Excella 1975 Owner's Manual page 23

Trailer Weighing
1. Trailer's Total Weight
(cannot exceed G.V.W.R.)
2. Trailer's Weight
on Axle Assemblies
(cannot exceed G.A.W.R.)
3. Weight on
Trailer's Tongue
may not exceed 1000 lbs (7100 - 6100 =
1000
).
The allowable personal cargo, determined
above, must be distributed in your trailer in
such a manner that the Gross Axle Weight
Rating (G.A.W.R.) is not exceeded.
To determine this, it is necessary to load all of
your allowable personal cargo (example above
1000 lbs total) and variable weights. Then
hitch trailer to tow vehicle with load equaliz¬
ing hitch properly adjusted, see diagram page
25.
Place trailer on scale with both axles only on
scale, see (2). If the weight on the axles
exceeds the axle system G.A.W.R. then some
of personal cargo must be redistributed for¬
ward in order to place some of this weight on
the tongue.
The tongue weight should be between
10%-15% of the trailer's total weight but must
not exceed 1,000 lbs. Some tow vehicle
manufacturers may restrict the amount of
tongue load to a lower value. To determine
tongue load, unhitch tow vehicle and place
tongue hitch post on scale, see (3). The trailer
must be properly loaded, as determined
above, with your allowable personal cargo and
variable weights.
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