Medium and Heavy Trucks

Have truck repair questions? Ask an Expert

Connect one-on-one with {0} who will answer your question

Related Medium and Heavy Trucks Questions
Parked truck yesterday and everything was fine. Today brakes
Parked truck yesterday and everything was fine. Today brakes wont release. Knob wont stay in when pressed either. Air pressure is normal.… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
4,563 satisfied customers
Trying to hook valve in 97 classic in its back feeding
Trying to hook valve in 97 classic in its back feeding trailer supply … read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
4,563 satisfied customers
I have a semi truck trailer and I just put 4 new slack
I have a semi truck trailer and I just put 4 new slack adjusters on it. Now the brakes aren't engaging at all. When before the slack adjuster replacements they were locking up.… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
4,563 satisfied customers
I have a 2000 Sterling actera that I'm need help with air
I have a 2000 Sterling actera that I'm need help with air brake issues. … read more
Daniel Wilson
Daniel Wilson
13,554 satisfied customers
What would cause my parking brake valve for my international
What would cause my parking brake valve for my international prostar not to pop out when their no air pressure brakes are also not fully releasing Just got new brakes and drums and had my slack adjust… read more
Andy
Andy
truck /coach technician
Vocational, Technical or Trade School
214 satisfied customers
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
Daniel Wilson
Daniel Wilson
13,554 satisfied customers
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
Jeremy
Jeremy
Certified Truck/Bus Technician
4,361 satisfied customers
I have an old Scania truck ( LB81). The New Zealand importer
I have an old Scania truck ( LB81). The New Zealand importer fitted a Eaton tandem axle when new. The park brake will not release. We have established the problem is lack of air in the supply tank eve… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
4,563 satisfied customers
I have an M2 Freightliner Sport Chassie. 2006. The Parking
Ii have air pressure but when I push the parking brake release button it won't release the brakes… read more
Daniel Wilson
Daniel Wilson
13,554 satisfied customers
Just to make myself clear with the park brakes released then
Just to make myself clear with the park brakes released then applying the foot peddle i have no air leaks but with the park brake on and apply the foot peddle i have air coming out the supply/emerganc… read more
Jeremy
Jeremy
Certified Truck/Bus Technician
4,361 satisfied customers
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
Daniel Wilson
13,554 satisfied customers
KW 1995. VIN1XKDDR9X2SS638580 have problem with air break
KW 1995. VIN1XKDDR9X2SS638580 have problem with air break release valves or sonething. Brakes take time before releasing means way longer then normal. Plus air exhausts through exhaust air line even w… read more
Jeremy
Jeremy
Certified Truck/Bus Technician
4,361 satisfied customers
I have a 2000 Volvo VNL 660 and the trailer control valve in
I have a 2000 Volvo VNL 660 and the trailer control valve in the dash board is leaking, ita has never been changed.I bought a new valve which was updated and has the exhaust connection in the valve at… read more
Jeremy
Jeremy
Certified Truck/Bus Technician
4,361 satisfied customers
Wayne i have a 95 freightliner thats been shiting 5 years.
wayne i have a 95 freightliner thats been shiting for about 5 years. brake lights are sticking on and also i i constant air pressure going to my service brakes. i have replaced foot valve and the valv… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
4,563 satisfied customers
my Kenworth 2002 Service brakes wont release when applied.
my Kenworth 2002 Service brakes wont release when applied. it is the same with or without trailers connected the only way to release brakes, is to apply the yellow parking brake then release it. it th… read more
Rudolph Diesel
Rudolph Diesel
Service manager/ Master mechanic
Vocational, Technical or Trade Scho
1,918 satisfied customers
Business Class M2 Freightliner 2006 when you release the parking
Business Class M2 Freightliner 2006 when you release the parking brakes the park brake indicator light stays on and the buzzer is heard only when the vehicle is in motion. the air pressure is running … read more
Toby
Toby
Vocational, Technical or Trade Scho
107 satisfied customers
I have a pneumatic braked vehicle that has 3-5ft roll back
I have a pneumatic braked vehicle that has 3-5ft roll back during 30% slope tests. Roll back is from service pedal release until spring brakes catch. Good vehicles are zero to a couple of inches rollb… read more
Daniel Wilson
Daniel Wilson
13,554 satisfied customers
i have a 07 western star 4900fa.i have a problem with the air
i have a 07 western star 4900fa.i have a problem with the air ride cab.i release the brakes the air valve loses air,but does not exhaust through the valve… read more
JANECZFJ
JANECZFJ
158 satisfied customers
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.

JustAnswer in the News:

Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.

What Customers are Saying:

Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help.

Mary C.Freshfield, Liverpool, UK

This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!!

AlexLos Angeles, CA

Thank you for all your help. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult.

GPHesperia, CA

I couldn't be more satisfied! This is the site I will always come to when I need a second opinion.

JustinKernersville, NC

Just let me say that this encounter has been entirely professional and most helpful. I liked that I could ask additional questions and get answered in a very short turn around.

EstherWoodstock, NY

Thank you so much for taking your time and knowledge to support my concerns. Not only did you answer my questions, you even took it a step further with replying with more pertinent information I needed to know.

RobinElkton, Maryland

He answered my question promptly and gave me accurate, detailed information. If all of your experts are half as good, you have a great thing going here.

DianeDallas, TX

< Previous | Next >

Meet the Experts:

Daniel Wilson

Daniel Wilson

13,554 satisfied customers

Owner at DJ Wilson

Cat Man

Cat Man

Cat Engine Expert

5,293 satisfied customers

I am ASE Master Truck Certified.

Wayne

Wayne

Journeyman

4,563 satisfied customers

worked on, Gmc, Macks, Freight liner,Mercedes Benz,,Ford, sterling

Jeremy

Jeremy

Certified Truck/Bus Technician

4,361 satisfied customers

ASE Med/HD Truck Technician, NATEF Diesel Engines and Electrical/Electronics Technician, Network Engineer specializing in CAN faults, Aftertertreatment, and vehicle communications

cumminsdr

cumminsdr

Mechanic

1,824 satisfied customers

All types of Cummins applications

Curtis B.

Curtis B.

Technician

1,806 satisfied customers

Technician turned service manager on multiple lines of trucks and engines, used in industry.

Chris (aka-Moose)

Chris (aka-Moose)

Technician

462 satisfied customers

24 years of experience diagnosing & repairing

< Previous | Next >

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.

Show MoreShow Less

Ask Your Question

x