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Old 05-08-2019, 07:20 PM   #975
Brand: Thor Motor Coach
State: Ontario
Posts: 94
THOR #13224

Drain fresh water tank and lines of antifreeze
Turn of all taps and faucets
Fill potable water tank
Mix cup bleach in gallon of water
Pour mixture in tank(s)
Install batteries (2 negative cables on negative 3 positive on positive) (hook up positive first)
Check pump strainer for debris
Prime pump
Run water through all taps and toilet until no more pink antifreeze is seen (hot &cold)
Drive RV for 10 minutes to disinfect tank
Drain potable water tank(s) then refill with clean water
Drain potable water tank(s)
Test all appliances for operation ( stove, fridge, furnace, A/C and whatever else you have)
Check all slides and drawers
Pour mineral oil in grey and black water tanks (grey through kitchen sink, black through toilet) This keeps the seals lubricated
Tire pressure check
Lubricate slide and seals

You may not need to use all of these but have done this on all of my motorhome and has not failed yet.
Regarding the batteries there is a very good diagram on the Thor Owners Resource in the schematics section which also has a wealth of information specific to your model and exact unit, just put in the VIN number
2018 Compass 23 TB
2007 Roadtrek 210 P
1994 Roadtrek 190 P
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