Medium and Heavy Trucks

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Related Medium and Heavy Trucks Questions
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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This is not a duplicate question. I have a 2004 Freightliner
This is not a duplicate question. I have a 2004 Freightliner century and it has a problem that the air valve that goes under the 5th a lot of hoses go to it is leaking from the round exhaust port when… read more
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Daniel Wilson
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My Driver was driving when his drive tires locked up on the
My Driver was driving when his drive tires locked up on the drivers side. He was able to pull over on the side of the road and called us and said it looks like the abs modulator is out. We purchased a… read more
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I have a 97 Volvo truck with an air brake problem. The relay
I have a 97 Volvo truck with an air brake problem. The relay valve is leaking air out of the exhaust prt when the parking brakes are released. I pinched the lines from the brake chambers to see if I h… read more
spankyjr1
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I sure do 1990 kw dump truck, parking brake valve leaks
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If it this 2007 Columbia When there is a brake application
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Jeremy
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I have a 2000 Volvo VNL 660 and the trailer control valve in
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I have a 2009 mack pinnacle, when I push on the brake pedal
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2000 Sherman and Reilly telephone pole trailer with Wabco ABS.
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Hey spanky its roland again hopefully you can help me i have
Hey spanky its roland again hopefully you can help me i have a 1996 ford aeromax with a 11.1L detriot. seems i dont have power coming out of the junction box on the cab for the trailer brake lights. i… read more
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my Kenworth 2002 Service brakes wont release when applied.
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I have a 1993 Volvo Gm truck. The air brake proportioning
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I have a 1998 Freightliner mt45 (step van) the parking brake
I have a 1998 Freightliner mt45 (step van) the parking brake in not engaging at all when the yellow knob is pulled out. is there a fuse, relay, etc. that could be causing this?… read more
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Hi, Have a Volvo heavy duty truck. jThe dash valve, for the
Hi, Have a Volvo heavy duty truck. jThe dash valve, for the red air valve for the trailer won't stay in when pushed. There are no air leaks. We replaced parking brake valve assembled, but did not fix … read more
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05 Freighliner 33000 GVWR. cat engine 12,000 miles. we have
05 Freighliner 33000 GVWR. cat engine 12,000 miles. we have added a trailer with electric brakes pintle hitch and the electric brake controll as well as the trailer light harness needs a separate feed… 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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