| Author |
Message |
Tim Brandt (Timb)
Registered Member
Username: Timb
Post Number: 104
Registered: 10-2003
Posted From: 66.165.176.60
Rating: N/A
Votes: 0 (Vote!) | | Posted on Wednesday, December 26, 2007 - 11:19 am: | |
Hello fellow busnuts. I am having an intermitant problem with the exhaust valve on the treadle sticking closed after I release the brakes. Is the valve something that can be disasembled, cleaned and serviced or should it just be replaced.
Thanks for any advice you have
Tim |
Scott Lacy (Pcifd)
Registered Member
Username: Pcifd
Post Number: 2
Registered: 12-2007
Posted From: 67.142.130.45
Rating: N/A
Votes: 0 (Vote!) | | Posted on Wednesday, December 26, 2007 - 7:17 pm: | |
It depends a bit on which valve you have, but, yes, it's probably possible to repair it. I was able to remove the guts from one that was stuck open and fix it while it was still installed on a firetruck.
But given how important it is, if you have to remove it to work on it, I'd lean toward replacing the whole thing. |
Tim Brandt (Timb)
Registered Member
Username: Timb
Post Number: 105
Registered: 10-2003
Posted From: 74.244.14.221
Rating: N/A
Votes: 0 (Vote!) | | Posted on Wednesday, December 26, 2007 - 10:04 pm: | |
Thanks Scott. I wasn't sure how expensive a part it is but after looking them up it's alot cheaper than I expected ~ $50. I believe I have a bendix E3 but I will uninstall this weekend to verify |
FAST FRED (Fast_fred)
Registered Member
Username: Fast_fred
Post Number: 159
Registered: 10-2006
Posted From: 66.90.229.81
Rating: N/A
Votes: 0 (Vote!) | | Posted on Thursday, December 27, 2007 - 6:20 am: | |
The coach units in SOME coaches limits the air pressure to a maximum.
There are valves with out this .
You may be able to stop a bit faster in an emergency with the non regulated.
Flat spots on the tires is one danger .
FF |
Tim Brandt (Timb)
Registered Member
Username: Timb
Post Number: 106
Registered: 10-2003
Posted From: 66.165.176.60
Rating: N/A
Votes: 0 (Vote!) | | Posted on Thursday, December 27, 2007 - 9:45 am: | |
Thanks for that bit of info Fred. That is definitely somehting I would have never suspecte |
john w. roan (Chessie4905)
Registered Member
Username: Chessie4905
Post Number: 788
Registered: 10-2003
Posted From: 71.58.48.5
Rating: N/A
Votes: 0 (Vote!) | | Posted on Thursday, December 27, 2007 - 6:56 pm: | |
If you search around Bendix on the web, you should be able to identify the one you have. You can get kits for just about all of them. Mostly just o-rings and diaphrams. They also make replaceable inserts for some so you don't have to disconnect and remove whole treadle assembly. Which would be a major PITA in an 04 as it is cramped in the under driver's compartment and has several lines attached which are difficult to put a wrench on and the larger copper lines don't want to be moved out of the way when disconnected. Hopefully, your FLX is easier to service. Bendix makes or made a couple of different valves; one had a more gradual apply rate, helping to avoid putting passengers through the windshield as easy on a light quick stop. Some where on the Bendix site info, it describes all of their air valves and how the different ones work. They used to call it their Air Brake Handbook. Every coach owner should have this along with their coach's parts and service manuals. |