Originally Posted by camper94
The Black Tank washout is one of the most worthless things that Redwood could put on the RV.
The BEST and ONLY way to clean out the Black Tank is with a Home Made Wand! I made one out of 1 inch PVC Pipe with Garden Hose attachments to control the Water. Drilled 4 holes in the bottom of the pipe cap and use it down through the top of the Toilet into the Black Tank. It cuts away all the GUNK and STUCK ON STUFF and After Flushing and Filling the Tank about 3 or 4 Times, it is pretty Clean. I use a Clear Pipe Cap outside when I open the dump valve to see what is coming out and after dumping several full tanks the water runs clear and NO more GUNK comes out.
This is the best way to clean the Black Tank. The Flush Valve is totally useless.
i use both
i have a flex spray wand from wally world works good as long as u dont beat up tank inside with it from old camper works well , occasionally too
the 3" black valve has a piece of plastic or sawdust or organic matter ,TP in blade track or from construction?
From when they built it has trash in it, the cutouts particles r plastic lodged in the valve track,
blade track seal area has deformed the rubber seal which wont allow the blade to close and seal compltely
fixed mine new vavle, rinsed flushed black tank many times till water was clean deodorized bleached re-rinsed clear water came out as a small trickle
jacked camper it up high on drain side so water wouldnt run out, very little dribbled out .clear and clean
installed fresh new 3" drain valve 11 bucks
pulled cable out, cable end was bent around blade hole restraightened and sprayed and relubed it cable was about to pull out of bulkhead wall .
adjusted lenght trimmed wire reinstalled works fine
now bought seal kits to rebuild 1.5 inch drains seals were dried out and showing wear on a 12 36re from use
cooking oil is kinda gummy by nature it become sticky over time soap is better
next time i have belly open for ice maker line repair new grey tank valve service kits in my toolbox