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10-08-2011, 03:20 PM
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#1
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Community Moderator
Winnebago Owners Club Freightliner Owners Club
Join Date: Dec 2003
Location: Weyauwega, WI US
Posts: 8,732
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Lubrication of Holding tank Valves
A few years ago there were some posts about taping and installing grease zerks in the holding tank valves. Has anyone done or heard of this being done? I did several searches and could not come up with anything. If I remember correctly it was done about 1/2 way up on the narrow part of the valve. Any input will be appreciated.
Don
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Don & Bev Morgan Weyauwega WI, 05 Itasca Horizon 40KD, 400 HP Cummins, Adopted by a great couple, Toad 07 Saturn Vue AWD, Air Force One, TST 510 TPMS, Mayor of Weyauwega 2007 - 2013, Waupaca Co Board Supervisor 2010 - 2014
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10-08-2011, 04:20 PM
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#2
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Senior Member
Join Date: May 2011
Posts: 181
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The pictures I saw showed the zerk a little over half way up the side of the valve. I have not done it to mine yet but it is on my list of things to do.
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"A bad day camping is better than a good day of work"
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10-09-2011, 01:16 AM
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#3
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Senior Member
Country Coach Owners Club Solo Rvers Club iRV2 No Limits Club
Join Date: May 2011
Location: Vancouver, WA
Posts: 37,725
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I just use a toilet chemical with coconut oil in it. Have never had a valve seal fail yet or need any more lubrication than that.
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2009 45' Magna 630 w/Cummins ISX 650 HP/1950 Lbs Ft, HWH Active Air
Charter Good Sam Lifetime Member, FMCA,
RV'ing since 1957, NRA Benefactor Life, towing '21 Jeep JLU Rubicon Ecodiesel
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10-09-2011, 08:14 AM
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#4
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Senior Member
Workhorse Chassis Owner
Join Date: Feb 2005
Location: western wa.
Posts: 563
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i have found the shaft seal to be the problem. a little silicon spray works good.
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2018 Jayco redhawk E 22
chevrolet express 4500 chassis
6LT
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10-09-2011, 09:41 AM
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#5
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Senior Member
Join Date: Aug 2005
Location: Full Timers - Where ever we're parked.
Posts: 583
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Similar to Mr_D, I put a half cup of vegetable oil in the toilet maybe once a month, never had a problem with the valve sticking or leaking.
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Paul - WA1IWH
Margaret - She who must be obeyed.
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10-09-2011, 09:44 AM
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#6
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Senior Member
Country Coach Owners Club Solo Rvers Club iRV2 No Limits Club
Join Date: May 2011
Location: Vancouver, WA
Posts: 37,725
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Quote:
Originally Posted by Tincup
Similar to Mr_D, I put a half cup of vegetable oil in the toilet maybe once a month, never had a problem with the valve sticking or leaking.
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Just remember that some oils could attack the "rubber" seals, coconut oil won't.
__________________
2009 45' Magna 630 w/Cummins ISX 650 HP/1950 Lbs Ft, HWH Active Air
Charter Good Sam Lifetime Member, FMCA,
RV'ing since 1957, NRA Benefactor Life, towing '21 Jeep JLU Rubicon Ecodiesel
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10-09-2011, 11:07 AM
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#7
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Senior Member
Join Date: May 2011
Posts: 181
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I use cheap baby oil from the dollar stores or coconut oil in all the tanks ocassionally, valves stay easy to move.
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"A bad day camping is better than a good day of work"
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10-13-2011, 08:02 PM
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#8
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Senior Member
Winnebago Owners Club
Join Date: May 2009
Location: AZ Mountains
Posts: 394
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Another option to be considered is spraying the metal shaft (of course, the valve must be open to do this) with plain ol' silicone spray. That bushing is where the action is. The rest of the valve is generally hollow, and filling that cavity with grease will give you a warm feeling, and some puddles of grease on the floor, but not much else.
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10-13-2011, 08:17 PM
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#9
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Registered User
Monaco Owners Club
Join Date: Jan 2011
Posts: 949
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SPF
Quote:
Originally Posted by Mr_D
I just use a toilet chemical with coconut oil in it. Have never had a valve seal fail yet or need any more lubrication than that.
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Does that have an SPF of 30 or more? 
It sounds like a good idea, where can we buy it?
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10-14-2011, 04:24 AM
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#10
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Senior Member
Join Date: Feb 2002
Location: bel air, md
Posts: 822
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i drilled an 1/8 " hole just beside the handle and squirted some silicone spray in it occassionaly and plug the hole with a small sheet metal screw with a small oring on it.
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09 Winnie 32 h adventurer towing '18 Malibu
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10-14-2011, 05:08 AM
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#11
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Senior Member
Vintage RV Owners Club
Join Date: Oct 2011
Posts: 220
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I worked as an RV tech in the 80's. We packed the area around the seals with vasoline, and greased the shaft with it also. We never had a complaint from a customer. I had a 76 HR Prez that I bought in 86. It had the Thetford valves on it which were three times the price of the generic black ones. Mine were leaking when I bought the coach. I replaced the fittings and the valves with the cheaper ones, packed them with vasoline, and when I sold the coach in 1999 they were still working well.
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10-15-2011, 06:23 PM
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#12
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Senior Member
Join Date: Jan 2001
Posts: 170
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When I winterize, I put some 'plumbers faucet and valve grease' ( Amazon.com: Faucet/valve Grease: Home Improvement) on the shafts of the black & grey tank valves and also around the cover to the outlet.
It keeps everything from drying and in the spring time and most of the travel year, everything works fine.
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2019 Navion 24J
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10-16-2011, 12:24 AM
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#13
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Senior Member
Vintage RV Owners Club
Join Date: Oct 2011
Posts: 220
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Quote:
Originally Posted by Wayneey
When I winterize, I put some 'plumbers faucet and valve grease' ( Amazon.com: Faucet/valve Grease: Home Improvement) on the shafts of the black & grey tank valves and also around the cover to the outlet.
It keeps everything from drying and in the spring time and most of the travel year, everything works fine. |
That sounds like the best idea yet  .
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10-16-2011, 06:29 PM
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#14
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Senior Member
Join Date: Aug 2006
Posts: 343
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I added the grease fittings on all three of my dump valves in 2009 and used them in a fulltime rv environment since. I added general purpose grease to them and immediately noticed a much easier valve movement. After two years, the valves continued to work great and very smoothly. We just traded coaches and I will be adding the grease fittings to my new dump valves. Very easy to do, just get the appropriate size tap, drill a hole, tap the threads, and screw in the fitting.
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Rick
2020 Fleetwood Discovery 40M
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