Lp Gas System - GMC 1975 Motorhome Operating Manual

CAUTION
LP Gas Tank Controls
LP GAS SYSTEM
effects, however, can be reduced by periodic
flushing of the underbody with plain water. In
geographic areas having a heavy concentration
of such corrosive materials, it is recommended
that the complete underbody be inspected and
flushed at least once each year, preferably after
a winter's exposure. Particular attention should
be given to cleaning out underbody members
where dirt and other foreign materials may have
collected .
If desired, your MotorHome dealer can per-
form this service for you . In addition, he can
provide recommendations on undercoating mate-
rials which will help protect your vehicle from
corrosion . (See "Undercoating" in APPEAR-
ANCE CARE section .
If gasoline or LP gas fumes are noticed
at any time, the cause should be deter-
mined and corrected without delay be-
cause of the possibility of fire .
Bottled LPG (Liquid Petroleum Gas) is safe,
economical, clean and conveniently available .
It operates the kitchen stove and furnace in your
MotorHome, as well as the gas/electric refrig-
erator, if so equipped.
The tank is located on the right side of the
vehicle in a compartment behind the rear wheels .
The tank is accessible only from outside of the
vehicle .
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The knob on the left is the filling connection.
This is where the tank is filled. Next to it is the
outage valve, which is designed to prevent the
tank from being overfilled. The control valve is
next to it. This is where the main LP gas line to
the vehicle can be shut off. On the line leading
out of the control valve is the regulator valve . It
should not be tampered with .
To fill the tank, drive the MotorHome to an
LPG Dealer (DO NOT REMOVE THE TANK).
The Dealer must use a P .O.L . adapter to fill the
tank. The adapter is to be inserted into the filling
connection. When liquid appears at the outage
valve the tank is full .
Always refill empty LP gas tank as soon as
possible. Appliances will stop working when the
gas supply becomes exhausted .
When you are not using the gas appliances,
shut off the control valve on the tank; this will
help prevent moisture from condensing inside
the tank. Having a small amount of Methyl
Alcohol put in the tank when you have it filled
will help prevent moisture in the tank and help
prevent the lines from freezing in the winter.
You may find that in the southern part of the
country only Butane is available for your LPG
tank. It will work fine except that at tempera-
tures below 30°F. Butane is in a liquid state .
In this temperature range no vapor is produced
to fuel the appliances. If you expect to encounter
temperatures below 30°F ., discharge the Butane
from the tank and refill the tank with propane
gas. Propane gas does not vaporize below a
temperature of -44°F.
When opening the valve to operate the sys-
tem, open it all the way, then close it one-quarter
turn . This will enable you to tell if the valve is
open or closed .
CAUTION
BEFORE opening the control valve check
that controls for all gas appliances are in
the OFF position . If this is not done, LP
gas could accumulate inside the vehicle
creating a fire or explosion hazard .
DO NOT alter LPG tank in any way . The
regulator on the tank is pre-set . DO NOT
attempt to adjust it . This should be done
by an authorized service outlet.