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WINTERIZATION
When traveling in winter it is recommended
that the water tank not be filled until the desti-
nation is reached. This will ensure that the ve-
hicle has thoroughly warmed up. The water and
holding tank systems should be drained before
leaving for home. Also, an approved plastic pipe
non-toxic, non-flammable antifreeze should be
put in the sink and shower traps . If equipped
with a recirculating toilet the standard winteri-
zation is to replace one-half of the charge water
with an approved plastic pipe non-toxic, non-
flammable antifreeze . This antifreeze added to
the holding tank will help keep the tank con-
tents from freezing .
See "Vehicle Storage" for additional infor-
mation .
CAUTION
If your vehicle is equipped with a Ther-
masan waste destruction system, it is es-
pecially important that flammable clean-
ing agents, solvents or other highly com-
bustible materials never be allowed to
enter the holding tank via the kitchen
or bathroom sinks, toilet or shower
drains . These materials could create an
explosion hazard in the vehicle exhaust
system . For further information refer to
the CAUTION and text under the "THER-
MASAN SYSTEM" in the section on OP-
ERATION OF LIVING AREA FACILITIES .
VEHICLE STORAGE
Your Motor Home may be stored for consid-
erable lengths of time provided the following
steps are performed :
1 .
SHORT TERM STORAGE
-UP TO 60 DAYS AND ABOVE 32° F.
a.
Fill fuel tanks to reduce excessive build-up
of moisture in the fuel tanks .
b.
Park Motor Home as level as possible, end
for end and side to side.
c. Wash Motor Home . If exposed to road salts
the exterior and underside should be thoroughly
washed and flushed .
d .
Check to make sure battery boost switch
is left in the "BAT NORMAL" position . If left
in the "BAT BOOST" position for extended
periods, battery discharge will occur.
e.
Remove all perishables, leave refrigerator
door open. Be sure controls are turned off.
106
f.
Ventilate the living area, drawers, cabinets,
closets, etc .
g.
Drain the holding tank, toilet and living
area water system as described earlier in this
section . Be sure the water pump and water heater
are turned off .
h.
Turn off LP gas at tank valve.
i . Make sure furnace manual valve and ther-
mostat are set at "OFF," range /oven burners at
"OFF," oven at "PILOT OFF" and gas/electric
refrigerator control at "GAS OFF ."
j . Plug or tape all drains to retard evapora-
tion of residual moisture in drain traps.
k.
Tape over vents to prevent insects from
entering . Be sure to remove tape before operat-
ing LP gas appliances, to help avoid poisioning
by carbon monoxide (see caution at beginning of
section on OPERATION OF LIVING AREA
FACILITIES) .
I . Check Motor Home weekly to ensure that
undesirable conditions are not forming (water
seepage, mold, odors, etc.) . Household air de-
odorizers or disinfectants in aerosol cans may be
used as required, however, do not spray directly
on any surface.
m.
Maintain tire pressure of 60 psi .
n .
Crack one window for ventilation, close
all others as well as roof vents .
o. Check batteries (main, auxiliary and motor
generator, if equipped)
for charge . Specific
Gravity reading of 1 .255 is required to prevent
deterioration . Add colorless, odorless drinking
water, if necessary (see pages 84-86) .
p . Turn off radio, exterior lights, and interior
lights .
q .
If Motor Home is to be moved, run engine
at least two minutes with the transmission se-
lector in "PARK."
r.
Start and run engine for approximately 15
minutes weekly . Check engine, transmission and
motor generator oil levels . Dipsticks should al-
ways be properly seated on tubes to prevent
moisture from entering .
2.
LONG TERM STORAGE
-60 DAYS OR MORE AND ABOVE 32° F.
a .
Perform all of the above steps except for
Step
r.
b.
Motor Homes without automotive air con-
ditioning ; remove spark plugs and squirt each
cylinder with "Super Engine Oil Supplement"
available at your GMC Motor Home service
outlet . Replace spark plugs.
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