1 Water system: The entire system needs to be drained in order to prevent freezing. Two items are needed, a 7/8” wrench or socket and a gallon of RV antifreeze.
A. Open all faucets including any bathroom shower or sink faucets.
B. On water tank, front left corner is a pet cock valve, Turn it 90 degrees toward the center of trailer. This opens valve and drains tank. This should drain water out of cold water lines. Close pet cock when tank is completely drained.
C. Open service access to gas hot water heater, Take 7/8” wrench and remove white drain plug from lower left of water heater tank. Water will drain out of tank, and also drain hot water lines. Replace plug.
D. Pour RV antifreeze into fresh water tank. Close faucets. If trailer has hand pump, pump until RV antifreeze comes out faucet, pump antifreeze down drain until sink trap is full. If automatic shurflo pump is used, turn pump on. Open cold water faucets only until antifreeze comes out, again filling sink trap. Repeat process in shower. Also fill floor trap in shower. How water lines should already be drained except between pump and tank. Turn on hot water side of sink for several seconds. This will pump antifreeze through the hot water line and into water heater. Amount in tank will be insufficient to cause damage.
E. Pour RV antifreeze down the trap in the bathroom and turn on pump that transfers grey water to the grey water tank. Flush toilet several times until RV antifreeze appears in toilet.
F. Drain grey and black water tanks completely.
2. Battery: To prevent battery from discharging over the winter, disconnect the battery. If in freezing climate, remove battery from trailer and storing indoors can prevent battery from freezing and breaking if discharged. If battery is not disconnected or removed from trailer make sure all twelve volt lights and appliances are turned off.
3. Running gear: Jack up the axle and block it up to take the weight off the suspension. Leaving the weight of the trailer on the suspension for extended periods while stored is extremely hard on the torsion axle. The rubber tends to compress and not relax as fully as before. Relive tire pressure to 10-15 pounds while stored. This extends tire life.
4. Propane: Make sure propane is off at the tank. It is also wise to make sure that all appliances are off.
5. Door and Windows: If the trailer is stored outside, check all windows, service doors, roof vents, and entry door making sure that they are properly closed.