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Bus won't drop air - Printable Version +- Wanderlodge Gurus - The Member Funded Wanderlodge Forum (http://www.wanderlodgegurus.com) +-- Forum: Yahoo Groups Archive (/forumdisplay.php?fid=61) +--- Forum: WanderlodgeForum (/forumdisplay.php?fid=63) +--- Thread: Bus won't drop air (/showthread.php?tid=5784) |
Bus won't drop air - Bob Lawrence - 10-05-2007 04:09 Hi group, Just a quick question...got back from the shop having had new leverers installed in front and rear. After getting into my spot tried to drop tag and main suspension dump valves and air wouldn't drop. Where do I look for this problem? Bob Lawrence 84 PT36 Tacoma, Wa. (with 21 days left up here before we fulltime south) Bus won't drop air - Bob & Carol Howald` - 10-05-2007 04:25 Bob, My 84 used to do the same thing, not all the time just now and then. I would have to start the engine put the switch's in the air-up position wait a couple on minutes and then everything would work normal when I shut it off. Don't know why. it just happened that way. Bob 93pt 40 warm Illinois. > > Hi group, > > Just a quick question...got back from the shop having had new leverers > installed in front and rear. > After getting into my spot tried to drop tag and main suspension dump > valves and air wouldn't drop. > > Where do I look for this problem? > > Bob Lawrence > 84 PT36 > Tacoma, Wa. (with 21 days left up here before we fulltime south) > Bus won't drop air - mbrund - 10-05-2007 06:09 You might check the fuses, the dump valve is electric operated. On the 1992 model that fuse (SK32) controls the main suspension and tag dump valve, as well as the valve that open/closes the fresh air intake to the drivers area. Michael Brundridge 1992 WB40 Georgetown, TX --- In WanderlodgeForum@yahoogroups.com, "Bob Lawrence" > > Hi group, > > Just a quick question...got back from the shop having had new leverers > installed in front and rear. > After getting into my spot tried to drop tag and main suspension dump > valves and air wouldn't drop. > > Where do I look for this problem? > > Bob Lawrence > 84 PT36 > Tacoma, Wa. (with 21 days left up here before we fulltime south) > Bus won't drop air - Rob Robinson - 10-05-2007 06:13 Both Bobs. My 94 acts up like that now. If I shut the main engine off before I switch the dump valves to dump nothing happens. I have to restart the engine, let the suspension air up a bit, hit the dump valves switches and everything works. I think the valves are getting a little old On 05/10/2007, Bob & Carol Howald` > > Bob, My 84 used to do the same thing, not all the time just now and > then. I would have to start the engine put the switch's in the air-up > position wait a couple on minutes and then everything would work normal > when I shut it off. Don't know why. it just happened that way. Bob > 93pt 40 warm Illinois. > > > > > > Hi group, > > > > Just a quick question...got back from the shop having had new leverers > > installed in front and rear. > > After getting into my spot tried to drop tag and main suspension dump > > valves and air wouldn't drop. > > > > Where do I look for this problem? > > > > Bob Lawrence > > 84 PT36 > > Tacoma, Wa. (with 21 days left up here before we fulltime south) > > > > > -- Rob, Sue & Merlin Robinson 94 WLWB [Non-text portions of this message have been removed] Bus won't drop air - Gregory OConnor - 10-05-2007 06:24 Bob, the dump valve is air operated. the switch on the dash is electric. If there is not 70 psi or more air in the two airbrake gauges , the air part of the switch will not dump or fill the air that is captured in the bags (even if it gets the electric signal to do so). If the electric part of the electric over pnumatic valve is depending on ignition???? that may also be a criterium to operate the valve. GregoryO'Connor 94ptRomolandca --- In WanderlodgeForum@yahoogroups.com, "Bob Lawrence" > > Hi group, > > Just a quick question...got back from the shop having had new leverers > installed in front and rear. > After getting into my spot tried to drop tag and main suspension dump > valves and air wouldn't drop. > > Where do I look for this problem? > > Bob Lawrence > 84 PT36 > Tacoma, Wa. (with 21 days left up here before we fulltime south) > Bus won't drop air - Bob Lawrence - 10-05-2007 12:35 Thanks for all the replys...this has happened twice before..don't know why..my gauges show 120 psi. Probably will start engine tomorrow and totally air up, then will try again. Question, where is the main dump valve? Bob Lawrence 84 PT36 Tacoma, Wa. --- In WanderlodgeForum@yahoogroups.com, "mbrund" <mbrund@...> wrote: > > > You might check the fuses, the dump valve is electric operated. On > the 1992 model that fuse (SK32) controls the main suspension and tag > dump valve, as well as the valve that open/closes the fresh air > intake to the drivers area. > > Michael Brundridge > 1992 WB40 > Georgetown, TX > > --- In WanderlodgeForum@yahoogroups.com, "Bob Lawrence" > > > > > Hi group, > > > > Just a quick question...got back from the shop having had new > leverers > > installed in front and rear. > > After getting into my spot tried to drop tag and main suspension > dump > > valves and air wouldn't drop. > > > > Where do I look for this problem? > > > > Bob Lawrence > > 84 PT36 > > Tacoma, Wa. (with 21 days left up here before we fulltime south) > > > Bus won't drop air - Don Bradner - 10-05-2007 13:07 Just be aware that your system has more than one air system, and the one shown on your gauges may not be (I would say probably isn't) any indication of the pressure available on the air bag system. The main gauge normally shows only the front/rear brake air, which would never be used for dump valves. Don Bradner 90 PT40 "Blue Thunder" 8V92 DDECII 475HP Posting today by satellite from Falcon, Colorado (East of Colorado Springs) On 10/6/2007 at 12:35 AM Bob Lawrence wrote: >Thanks for all the replys...this has happened twice before..don't >know why..my gauges show 120 psi. >Probably will start engine tomorrow and totally air up, then will try >again. >Question, where is the main dump valve? >Bob Lawrence >84 PT36 >Tacoma, Wa. > >--- In WanderlodgeForum@yahoogroups.com, "mbrund" <mbrund@...> wrote: Bus won't drop air - Mike McMahan - 10-06-2007 00:17 My understanding is that their is a saftey on the system that will not let you dump the suspension without x(don't remember how much) pounds of air pressure at the valve. I remember on my 82 PT40 this happening. Once I started the engine and built up some air pressure it would dump. You will probably find an air leak in the system. Mike McMahan 1989 PT40 --- In WanderlodgeForum@yahoogroups.com, "Bob Lawrence" > > Thanks for all the replys...this has happened twice before..don't > know why..my gauges show 120 psi. > Probably will start engine tomorrow and totally air up, then will try > again. > Question, where is the main dump valve? > Bob Lawrence > 84 PT36 > Tacoma, Wa. > > --- In WanderlodgeForum@yahoogroups.com, "mbrund" <mbrund@> wrote: > > > > > > You might check the fuses, the dump valve is electric operated. On > > the 1992 model that fuse (SK32) controls the main suspension and > tag > > dump valve, as well as the valve that open/closes the fresh air > > intake to the drivers area. > > > > Michael Brundridge > > 1992 WB40 > > Georgetown, TX > > > > --- In WanderlodgeForum@yahoogroups.com, "Bob Lawrence" > > > > > > > > Hi group, > > > > > > Just a quick question...got back from the shop having had new > > leverers > > > installed in front and rear. > > > After getting into my spot tried to drop tag and main suspension > > dump > > > valves and air wouldn't drop. > > > > > > Where do I look for this problem? > > > > > > Bob Lawrence > > > 84 PT36 > > > Tacoma, Wa. (with 21 days left up here before we fulltime south) > > > > > > Bus won't drop air - Bob Lawrence - 10-06-2007 14:24 yeah, I'm sure you're right, Mike....someday I'll borrow one of those sound meters and find all the leaks..thanks. Do you know where the valve is? Bob Lawrence 84 PT36 Tacoma, Wa. --- In WanderlodgeForum@yahoogroups.com, "Mike McMahan" <mmcmahan@...> wrote: > > My understanding is that their is a saftey on the system that will > not let you dump the suspension without x(don't remember how much) > pounds of air pressure at the valve. I remember on my 82 PT40 this > happening. Once I started the engine and built up some air pressure > it would dump. You will probably find an air leak in the system. > Mike McMahan 1989 PT40 > > --- In WanderlodgeForum@yahoogroups.com, "Bob Lawrence" > > > > > Thanks for all the replys...this has happened twice before..don't > > know why..my gauges show 120 psi. > > Probably will start engine tomorrow and totally air up, then will > try > > again. > > Question, where is the main dump valve? > > Bob Lawrence > > 84 PT36 > > Tacoma, Wa. > > > > --- In WanderlodgeForum@yahoogroups.com, "mbrund" <mbrund@> wrote: > > > > > > > > > You might check the fuses, the dump valve is electric operated. > On > > > the 1992 model that fuse (SK32) controls the main suspension and > > tag > > > dump valve, as well as the valve that open/closes the fresh air > > > intake to the drivers area. > > > > > > Michael Brundridge > > > 1992 WB40 > > > Georgetown, TX > > > > > > --- In WanderlodgeForum@yahoogroups.com, "Bob Lawrence" > > > > > > > > > > > Hi group, > > > > > > > > Just a quick question...got back from the shop having had new > > > leverers > > > > installed in front and rear. > > > > After getting into my spot tried to drop tag and main > suspension > > > dump > > > > valves and air wouldn't drop. > > > > > > > > Where do I look for this problem? > > > > > > > > Bob Lawrence > > > > 84 PT36 > > > > Tacoma, Wa. (with 21 days left up here before we fulltime > south) > > > > > > > > > > Bus won't drop air - ragster_ga - 10-06-2007 16:04 Bob, I seem to recall reading that the dump valve is located up front. I believe I remember it was on the passenger side somewhere, but it may be the drivers side. Glenn Allen 1986 PT-40 Marietta, GA --- In WanderlodgeForum@yahoogroups.com, "Bob Lawrence" > > yeah, I'm sure you're right, Mike....someday I'll borrow one of those > sound meters and find all the leaks..thanks. > Do you know where the valve is? > Bob Lawrence > 84 PT36 > Tacoma, Wa. > |