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Having trouble repairing air brakes on semi. when i hook to
Having trouble repairing air brakes on semi. when i hook to trailer the red knob wont stay in and had lots of pressure pushing out. the yellow know will stay in until i try to push knob for emer trail… read more
Daniel Wilson
Daniel Wilson
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When the parking brake is applied, if I push on the foot
When the parking brake is applied, if I push on the foot pedal air leaks from the trailer protection valve exhaust. … read more
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2012 pro star plus international change foot valve and tp5
2012 pro star plus international change foot valve and tp5 valve still have a problem bleeding air through service glad hand when push pull valve on trailer applied and brake on trailer will lock down… read more
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Jeremy
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I need to know which pressure switch in dash of 2007
I need to know which pressure switch in dash of 2007 freighter Columbia works trailer brake lights. I have checked all fuses & relays in truck. I have tested trailer with different tractor and brake l… read more
Wayne
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Have a 2007 Freightliner Columbia trailer ABS light stays on
Hey I have a 2007 Freightliner Columbia trailer ABS light stays on when clip to a trailer I swapped to a different trailer and the light is still on every time I connect the electrical cord I don't th… read more
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2011 Freightliner Coronado no air at red glad hand when
2011 Freightliner Coronado no air at red glad hand when trailer valve is pushed in on dash. if red trailer valve is pushed in on dash and you step on brake pedal then air feed out of red glad hand but… read more
Daniel Wilson
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Auto Mechanics 1&2/diesel mech
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I have 2007 Freightliner Classic. I am having a problem with
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I have a 2006 stetling A9513 single axle road tractor I am
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I Have a 2007 Freightliner Classic XL. I am having a problem
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Wayne
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My 87 Freightliner Trailer Supply Valve won't stay engaged.
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Jeremy
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I have 2003 freigtliner FL70 when foot brake is applied air comes out
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Wayne
Wayne
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don i have a 1987 peterbilt 359 and the tractor protection
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2010 Kenworth T2000. Brake lights come on by themselves at
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my Kenworth 2002 Service brakes wont release when applied.
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there is no current on pin 7 of my pigtail on my 97 fld..this
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JANECZFJ
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Hello, I have a 2000 sterling tractor and my trailer brake
Hello, I have a 2000 sterling tractor and my trailer brake lights are on as soon as the key is turned on and stay on, the underhood relay is getting "switch on' power with key on, also i get power at … read more
Wayne
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i have 1997 freightliner tractor when you push in the button
i have 1997 freightliner tractor when you push in the button to release the maxi brakes the center valve and the right side valve dump air and do not release the brakes at it's conveinence it some tim… read more
Wayne
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I have a 2005 Mercedes Columbia Freightliner.Trailer brake
I have a 2005 Mercedes Columbia Freightliner. Trailer brake lights stay on 100% of the time even though the tractor brake lights are not on and the tractor is completely shut down When hooked to a tra… read more
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Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

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