7
Maintenance
2017 Interstate 9-15
Restoring Service
1� Re-install the fully charged house battery�
2� Close the low point drain valves, holding tank
dump valves, water faucets, and fresh water tank
drain�
3� Reconnect water pump line�
4� Add water to the fresh water tank�
5� Turn the water pump on�
6� Open and close faucet valves one at a time until
water runs clear at all faucets signaling RV, non-
toxic antifreeze is ushed out of lines. Go back and
recheck water clarity at all faucets�
7� Turn off water pump�
8� Hook up city water, open faucet valves, and
recheck water clarity�
9� Replace water heater plug or close drain valve and
reset water heater bypass to the “in use” position�
10� Fill water heater�
Winterizing Pump
Plan your winterizing and storage ahead, and be sure
the holding tanks are drained and ushed thoroughly.
This is very important, as the frozen sewage and water
could seriously damage the system� After dumping
tanks, add a quart or two of RV, non-toxic antifreeze to
one of the holding tanks and start the macerator pump�
Run the pump until the RV, non-toxic antifreeze comes
out the end of the pump hose� Leave dump valves
open� As extra protection, open the toilet valve and add
a quart of RV, non-toxic antifreeze to the Black Water
tank and pour a quart of RV, non-toxic antifreeze into
a sink drain to protect the holding tanks, valves, and
pump from residual water freezing. Pump to ll the
hose completely�
NOTE
In very cold weather, winterizing the touring coach
is recommending to prevent damage to the waste
systems. Use common sense and winterize as
needed.
Toilet
The RV toilet in your Airstream is a design that has
been used for many years. To ush, press down on the
foot pedal, this dumps the sewage and ushes fresh
water down the side of the bowl� Water will continue
to run into the bowl for a short time after the pedal is
released� Follow the manufacturer’s instruction on
operating, cleaning, and sanitizing toilet�
NOTE
When you dump the bowl of the toilet, make
sure all paper and solids have cleared the slide
mechanism before you allow it to close.
Troubleshooting
1� Leaks:
a� Back of toilet: check water supply line connec-
tion at water valve� Secure or tighten as neces-
sary� If leak persists from water valve, replace�
b� Vacuum breaker leaks while ushing: replace
vacuum breaker or water module, depending
on model�
c� Between closet ange and toilet: check ange
nuts for tightness� If leak continues, remove
toilet and check ange height. Use Thetford
spacers to adjust, if necessary, to 7/16-in�
above oor. Replace ange seal.
2� Toilet won’t hold water:
a� Check for and remove any debris from blade-
ball seal track�
b� Check blade/ball seal compression mecha-
nism� If blade/ball seal is worn, replace�
3� Harder than normal pedal or hand lever operation:
Apply light lm of Thetford Toilet Seal Lubricant &
Conditioner or silicone spray to blade/ball� (Note:
To avoid damage, do not use spray lubricants other
than silicone�)
4� Poor ush: Pedals or hand levers must be held
fully open during ush. A good ush should be
obtained within 2 to 3 seconds� If problem persists,
remove the water supply line and check ow rate.
The ow rate should be at least 10 qt (9.5 L) per
minute�
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