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07-18-2015, 03:21 PM
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#1
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Senior Member
Join Date: Jun 2015
Location: Penticton BC
Posts: 203
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99 DSDP Air leak Spartan Chassis
Hi, I have a 99 Dutch Star. New to me a few weeks ago and it has a leak at a valve that is mounted between the two air tanks at rear of tanks.
It is leaking out of the vent on the bottom of the valve only when park brake is off. As soon a I set the park (spring) brake it stops.
I think the valve is the spring brake valve but do not know for sure.
I tested the rear brake chambers to see if they are leaking through and they are not.
I am a Ford tech but have very little experience with air brakes.
Can anyone confirm what this valve is ?
Thanks Gord
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07-18-2015, 03:38 PM
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#2
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Senior Member
Join Date: Jun 2015
Location: Penticton BC
Posts: 203
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07-18-2015, 03:39 PM
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#3
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Senior Member
Join Date: Jun 2015
Location: Penticton BC
Posts: 203
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07-18-2015, 04:52 PM
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#4
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Moderator Emeritus
Newmar Owners Club
Join Date: Apr 2014
Location: Southern Indiana
Posts: 19,417
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Not sure if Spartan was consistent on their air plumbing back then but on my 2002 red lines are front brake system green was rear brake system and orange is the parking brake system.
Hard to tell for sure if the lines are red or orange in your pictures.
Steve
__________________
Steve
2002 Newmar Mountain Aire 4095
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07-18-2015, 05:16 PM
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#5
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Senior Member
Join Date: Jul 2014
Posts: 35,349
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Probably a relay valve for the parking brakes.
The small line comes from the dash control. The large lines send tank air, to the spring brake chambers, when the parking brake is OFF.( released )
Like a relay ( solenoid ) in an electrical system. small wire, to close contacts, on big cables.
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07-18-2015, 07:29 PM
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#6
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Senior Member
Join Date: Jun 2015
Location: Penticton BC
Posts: 203
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Thanks for the replies guys. Having a better look and paying attention to hose colour
it has to be spring brake valve. Has Green going in one port,Red going in other and orange in and out.
Hope we get all these bugs worked out soon it has become a second job for me.
At least its interesting work though.
__________________
99 Dutch Star Spartan 300 Cummins,Toad 06 Matrix
31 Model A , 2007 Road Glide, 56 Chevy Handyman station wagon (in Progress)
DW Suzie and Georgia Newfie,Cleo Mastiff
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07-18-2015, 07:36 PM
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#7
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Senior Member
American Coach Owners Club
Join Date: Jan 2013
Location: Anyplace Rainbow, USA
Posts: 782
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Quote:
Originally Posted by GBRG07
Hi, I have a 99 Dutch Star. New to me a few weeks ago and it has a leak at a valve that is mounted between the two air tanks at rear of tanks.
It is leaking out of the vent on the bottom of the valve only when park brake is off. As soon a I set the park (spring) brake it stops.
I think the valve is the spring brake valve but do not know for sure.
I tested the rear brake chambers to see if they are leaking through and they are not.
I am a Ford tech but have very little experience with air brakes.
Can anyone confirm what this valve is ?
Thanks Gord
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How did you verify brake chambers are ok?
I would remove the service air lines and release the parking brakes... see if any air comes out of the chambers fitting. There is an internal seal that can fail..
__________________
Ed H
The "Wife" Jackie, and the dog Daisy ( RVM51)
2000 American Eagle ( Jenny), 2013 Jeep Wrangler
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07-18-2015, 07:48 PM
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#8
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Senior Member
Join Date: Jun 2015
Location: Penticton BC
Posts: 203
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With the E Brake on (chamber pressurized) I pulled the service brake hose off both rear chambers and check for leak coming out of chamber.
__________________
99 Dutch Star Spartan 300 Cummins,Toad 06 Matrix
31 Model A , 2007 Road Glide, 56 Chevy Handyman station wagon (in Progress)
DW Suzie and Georgia Newfie,Cleo Mastiff
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07-18-2015, 11:14 PM
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#9
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Senior Member
Join Date: Jun 2015
Location: Penticton BC
Posts: 203
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Make that E brake off. Chamber pressurized.
__________________
99 Dutch Star Spartan 300 Cummins,Toad 06 Matrix
31 Model A , 2007 Road Glide, 56 Chevy Handyman station wagon (in Progress)
DW Suzie and Georgia Newfie,Cleo Mastiff
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