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
Was working on an air brake issue with you earlier this
Was working on an air brake issue with you earlier this week. The purge valve is fluttering after purge. I have replaced governor, unloaded, both lines from governor, filter assembly and check valve i… read more
Mike Mcmillan
Mike Mcmillan
Triage Tech/Shop Foreman
Associates
398 satisfied customers
We have a old school bus we are using for our church. It is
We have a old school bus we are using for our church. It is about a 96 model. The air pressure builds to about 18 lbs every time I try to build it up. It doesn't leak off fast and I put a new governor… read more
Andy
Andy
truck /coach technician
Vocational, Technical or Trade School
207 satisfied customers
Front brake air system loses 20lbs air in 2 minutes but only
Front brake air system loses 20lbs air in 2 minutes but only while running no lose of air when shut off … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
4,737 satisfied customers
Cat man, I have a 2006 Country Coach Motorhome with a C-13.
Hi Cat man, I have a 2006 Country Coach Motorhome with a C-13. I corresponded with you last summer re low oil pressure; just trying to find my post and your answer. Today, I took the coach out of stor… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,214 satisfied customers
I have a 2015 international with a Cummins isx.The air
Hello, I have a 2015 international with a Cummins isx.The air system was building up too much air pressure so 3 days ago I replaced my air dryer and govenor with a rebuilt from napa and It fixed the p… read more
spankyjr1
spankyjr1
Retired
Vocational, Technical or Trade Scho
420 satisfied customers
Cat man; replaced oil pan; used old gasket it leaked..
Cat man; replaced oil pan; used old gasket it leaked.. pulled pan down again used new gasket. Black silicone at the corners but I really cranked on them bolts , leaks bad, to much torque? Got another … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,214 satisfied customers
2005 KW T800 with a CAT C-13 Having issues with air dryer
Second opinion] 2005 KW T800 with a CAT C-13Having issues with air dryer purge valve chattering and leaking until air pressure drops to 100 psi. Changed the valve with no luck. Changed the air dryer a… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
4,737 satisfied customers
I have a c11cat and the air system de. I have a 2007
I have a 2007 international 7600 with a cat c_11 and a bendixba291 compressor. Today the air pressure pegged the gauges at 160 psi and the warning lights same on. … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
4,737 satisfied customers
Morning. Hoping Cat Man is available again. A couple of
Morning. Hoping Cat Man is available again. A couple of weeks ago you helped me with a 3126 that had oil coming out of the breather tube. Turned out to be the turbo. Put a new turbo on and the problem… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,214 satisfied customers
I am working on a 2005 Freightliner with a C-7. There is a
Hi. I am working on a 2005 Freightliner with a C-7. There is a large oil leak on the left rear side. The starter and area are soaked. The droplets are forming on the bottom of the ECM. It looks like t… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,214 satisfied customers
Hoping Cat Man can help here? I have a 2008 Pete with a Cat
Hi. Hoping Cat Man can help here? I have a 2008 Pete with a Cat 550 ACCERT, It has had an inframe and then a head gasket later. Anyways, engine is going through to much oil. No external leaks,dealer h… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,214 satisfied customers
Hi. I have a CAT C-13. Twin turbo. My questions are related
Hi. I have a CAT C-13. Twin turbo. My questions are related to the Injector cups. I have the tools and have done quite a few on earlier 3406E engines. Just wondering what tools are needed for the C-13… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,214 satisfied customers
runs great for 3/4 mile then loses power. shut off for 1minute
runs great for 3/4 mile then loses power. shut off for 1minute then same thing.we replaced lift pump and checked all lines for air leakage. P.S. this is a 3406b. thanks Les… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,214 satisfied customers
Hello I got 1985 pete and when we fired it up we got the air
Hello I got 1985 pete and when we fired it up we got the air system to charge to 120psi and now it won't go above 20 psi we thought it was the govenor and the air still won't pump up… read more
Travis A. Wells
Travis A. Wells
Truck Mechanic
Associates of Applied Science
15 satisfied customers
Hey Cat Man I ask you about how to measure blow by earlier.
Hey Cat Man I ask you about how to measure blow by earlier. An engine when new should have little or no blow by correct? So hooking a manual manometer to the dipstick tube shows how much pressure is i… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,214 satisfied customers
Are 1998 Freightlinner, Cummins M11 plus, has just had its
Are 1998 Freightlinner, Cummins M11 plus, has just had its air compressor replaced, along with a (New air dryer), problem is that it will not build air pressure ??… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,214 satisfied customers
I have a question, I turned my fan switch on, and it wont
I have a question, I turned my fan switch on, and it won't turn off. What would the cause if that be ? Next is the air system. Last week it was always making air, and releasing every 10 seconds. This … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,214 satisfied customers
I THOUGHT THE GOVERNOR WOULD RELEASE THE COMPRESSOR OR DOES
I THOUGHT THE GOVERNOR WOULD RELEASE THE COMPRESSOR OR DOES THE COMPRESSOR DISCHARGE EXCESS AIR SOMEWHERE. WITH THIS OPERATING LIKE THIS DOES IT DAMAGE COMPRESSOR… read more
Jim
Jim
Diesel tech.
212 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

4,737 satisfied customers

Owner at DJ Wilson

Cat Man

Cat Man

Cat Engine Expert

10,214 satisfied customers

I am ASE Master Truck Certified.

Wayne

Wayne

Journeyman

4,023 satisfied customers

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

Jeremy

Jeremy

Certified Truck/Bus Technician

2,740 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

1,700 satisfied customers

All types of Cummins applications

Curtis B.

Curtis B.

Technician

1,571 satisfied customers

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

Chris (aka-Moose)

Chris (aka-Moose)

Technician

353 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