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Open Roads Forum  >  Tech Issues  > Sticky black tank valve; How to lube? This Topic Is Closed  |  Print Topic  |  Post New Topic  |  Oldest first Newest first  Page of 2   Next joanne0012 • View posts Boston, MA Senior Member Joined: 02/01/2005 View Profile Offline Posted: 04/27/08 05:40am Link  |  Print  |  Notify Moderator Pulling the valve on the black tank has gradually become a twisty gymnastic exercise, and of course I'm concerned that one of these days I won't be able to pull it at all. I can't imagine why it has gotten sticky, since it's only 14 years old. Anyway, I'd rather not replace it, so how do I get it to operate more smoothly? Joanne 1994 Lazy Daze 23.5' TK Dave H M • View posts IL Senior Member Joined: 08/11/2006 View Profile Offline Posted: 04/27/08 06:25am Link  |  Print  |  Notify Moderator Instead of messing with it, I would just replace it in a heartbet and lube the new one. You did not day if it was remote, but put some grease on the blade shaft for starters. At that age remote may need a new cable. Twomed • View posts On the road USA Senior Member Joined: 06/02/2004 View Profile Offline Posted: 04/27/08 08:08am Link  |  Print  |  Notify Moderator Replace it while you have the option of an empty, clean tank. MURPHY SAYS... it will finally break when: it's full, you have company, no place to dump, a long way from parts. Your choice Happy Trails 06 Monaco Dynasty 07 Hummer H3 FMCA 279843 mockturtle • View posts Northwest Senior Member Joined: 05/31/2005 View Profile Good Sam RV Club Posted: 04/27/08 08:30am Link  |  Print  |  Notify Moderator Granted, ours are not that old, but we find spraying them with silicone keeps them workable. 2000 Born Free 24RB Class C 2002 Honda CR-V toad Roadmaster Sterling A/T towbar VIP braking system Eddyline Merlin kayak ryanallie1 • View posts Magalia, Calif Senior Member Joined: 04/12/2005 View Profile Good Sam RV Club Posted: 04/27/08 09:26am Link  |  Print  |  Notify Moderator Hi All. Well, you have a couple of choices. Take it apart, and buy a tube of Plumbers Grease, its safe, and also can be used on any drinking water supply fittings, as it is safe for humans. It also will last you for many mnay years. I use it on our RV, and ours is 12 years old, and you only need two fingers to slide our valves. You can also, carefully drill a hole in the top and bottopn of the Blade housing, and cement in a Zert Fitting, so you can grease it, from time to time. Also, any good brand of a Dry-Lube Sprays works great also. Or you can replace it. Good Luck. Happy Camping, Dan & Jill 1998. 33.5 Rexair SL. 460 Cu In. Ford F-53 Chassis. Hyd Levelers. 5.5G Generac Gen. 3 Burners W/Oven. Convection Microwave. 12 Cu Ft Side by Side Fridge. Water Purifier System. 2 A/C's. Alarm System. 2 Honda EU2000i Gen's W/Kit. Nam-Vet, 66-67-68,& 70-71 portablevcb • View posts Tijeras, NM Senior Member Joined: 05/04/2006 View Profile Offline Posted: 04/27/08 09:43am Link  |  Print  |  Notify Moderator Yep, I'd replace it. When we bought an older RV it had a sticky valve. I figured like Twomed. Better to do it with a clean tank, with the parts and tools at hand. It is kinda like working on toilets. At first it seems like it will be a really messy, ucky, job. I was amazed how little mess there was once I flushed the tank good. charlie 2009 Dodge 2500 Double Cab Cummins 2003 Skyline Nomad 24ft Fiver Me and Wife Maggie the Old English Sheepdog ArcticDodge • View posts Sammamish, WA Senior Member Joined: 05/02/2005 View Profile Offline Posted: 04/27/08 11:27am Link  |  Print  |  Notify Moderator I use water proof grease. The suggestions for replacement are a good option. 2009 Komfort 256TS 2001 Dodge Ram 3500 QC 4x4 Cummins DRW 2005 Dodge Durango Limited AWD HEMI 2001 Sebring Convertible 1995 Miata M-Edition 2005 DRZ400 - 2005 CRF150 - 2001 XR80 1 Wife 2 Boys 1 Trixie (Bichon Frise) Only 26 years to retirement!!!! C5man • View posts West Coast Senior Member Joined: 10/17/2006 View Profile Good Sam RV Club Posted: 04/27/08 12:38pm Link  |  Print  |  Notify Moderator Last season I replaced both dump valves as a simple matter of preventative maintenance, even though they still worked. They are cheap and I hate nasty surprises when traveling, especially surprises of the black water variety. SidKaye • View posts Mt Dora Florida, Montreal QC for the Summer Senior Member Joined: 09/03/2003 View Profile Offline Posted: 04/27/08 04:14pm Link  |  Print  |  Notify Moderator Joanne, is it a cable pull valve OR is it external where you can see the whole assembly? IF you can see it, you can lubricate it. IF it is concealed, thetford makes a blade valve lubricant that you pour in the tank. Instructions on the container. The problem with old valves is that the blade itself can have a buildup of calcium like deposits that coat the blade creating a rough surface. I replaced a cable actuated valve about a week ago and the blade was rough. Sidney 2003 Dodge Ram 3500 SLT,48RE, 4:10,Cummins HO Diesel,Quad Cab,LWB,SRW,PacBrake,Prodigy, X-Monitor Gauges,Line-X,Bedsaver 2002 Excel,Ltd,30RGW,Hughes Autoformer,Honda Eu1000i, Hughes Direcway HN7000S, Satmex5, http://www.kayepics.com joanne0012 • View posts Boston, MA Senior Member Joined: 02/01/2005 View Profile Offline Posted: 04/27/08 04:48pm Link  |  Print  |  Notify Moderator Hi, I'm back. It's a very simple external pull valve, I was LOL at the discussions of cables etc. Since I haven't had any hard-water issues elsewhere in the plumbing system, I guess I'll just try one of the lubricants mentioned above, and plan on buying the right replacement part in the near future. Thanks, everyone! This Topic Is Closed  |  Print Topic  |  Post New Topic  |  Oldest first Newest first  Page of 2   Next Open Roads Forum  >  Tech Issues  > Sticky black tank valve; How to lube?

Search:   Advanced Search Search only in Tech Issues

Jump to Forum Recreational Vehicles  - Class A Motorhomes  - Class B - Camping Van Conversi...  - Class C Motorhomes  - Fifth-Wheels  - Folding Trailers  - Hybrid Travel Trailers  - Travel Trailers  - Truck Campers  - Toy Haulers Camping  - Tent Camping  - Family Camping  - Workamping Forum General Forums  - Beginning RVing  - Rallies, Shows and Gatherings  - General RVing Issues  - RV Lifestyle  - Full-time RVing  - Camp Cooks and Connoisseurs  - RVing with Disabilities and Ge...  - RV Pet Stop Technical Resources  - Towing  - Tow Vehicles  - Dinghy Towing  - Technology Corner  - Forum Technical Support  - Tech Issues Locations  - RV Parks, National Parks, Stat...  - Roads and Routes  - Public Lands, Boondocking and ...  - RVing in Canada and Alaska  - RVing in Mexico and South Amer...  - Snowbirds Other Discussions  - Around the Campfire

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