Medium and Heavy Trucks

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Related Medium and Heavy Trucks Questions
Having a hard time building air. ISX 15 Cummins 2013
I am. I've put a new air dryer on, a new air compressor on changed the dryer filter, changed the dryer governor. I used shop air to check flow in all of the air lines to both tanks and pushed shop air through the signal air line … read more
Steven
Steven
Triage Tech/Shop Foreman
Associates
184 satisfied customers
I have an international prostar vin BN195258 I'm having air
Hello i have an international prostar vin BN195258 I'm having air issues on my truck. Just couple days ago i had 30lbs of air pressure and we called out a tech on the road. They ended up replacing the… read more
Andy
Andy
truck /coach technician
Vocational, Technical or Trade School
203 satisfied customers
The air brake pressure on my 1998 Freightliner is slow to
The air brake pressure on my 1998 Freightliner is slow to build and when I apply the brake while the engine is running, the air pressure drops to 60psi within 15 pedal pumps. Too fast. I don't hear an… read more
Roy
Roy
shop foreman
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Assist malfunction. 2011 chu613 mack mp8. Not sure what
not sure what happened,brakes locked tried to move forward and lost all air … read more
Steven
Steven
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Requested you because you were so helpful with my volvo
Hey Steven, requested you because you were so helpful with my volvo problem with the EGP. Almost had to ask a really dumb question. I have just replaced the compressor on a 1979 Mack. I had never had … read more
Steven
Steven
Triage Tech/Shop Foreman
Associates
184 satisfied customers
I have a 2007 freightliner columbia mbe4000 i cant get it to
I have a 2007 freightliner columbia mbe4000 i cant get it to built any air at all i replaced the dryer with governor on it I replaced the primary ait tank and check valve on fron of it along with all … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
3,632 satisfied customers
International Prostar with Maxxforce 13. Air pressure not
International Prostar with Maxxforce 13. Air pressure not building even to 1 lb. Getting pressure to dryer (popped off main inlet and getting enough pressure to hose that I can't hold finger over it. Have replaced entire dryer at this point so new filter and governor. … read more
Eddy
Eddy
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GED
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Looking for a diagram for air system on a 2005 Frieghtliner
looking for a diagram for air system on a 2005 Frieghtliner colimbia … read more
Don
Don
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Vocational, Technical or Trade Scho
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Mack ch 612 screw air compressor problem, mack ch 612 not
mack ch 612 not sure of the year vin is1m2aa09y6rw005073 I believe it an 98 … read more
spankyjr1
spankyjr1
Retired
Vocational, Technical or Trade Scho
420 satisfied customers
Wayne 2014 kentworth has the new bendix air dryer with the
Wayne 2014 kentworth has the new bendix air dryer with the short filter it builds air pressure and air dryer purges showing that the tanks are full, but the secondary never does. I disconnect the air … read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
3,400 satisfied customers
2011 Peterbilt 320. Slow to build air pressure. Won't build
2011 Peterbilt 320. Slow to build air pressure. Won't build past 1oo psi at idle. Driving it builds air normally. @1500 rpm. it will build pressure but very slowly. No audible air leaks. By passed air… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
3,632 satisfied customers
1994 international 4900. we have been having severe problems
1994 international 4900. we have been having severe problems with the air freezing up on it and we want to bypass the air dryer. what are the ramifications of bypassing the unit? I would much rather s… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
3,400 satisfied customers
I have 2010 Freightliner cadcadia dd15 , having problems with
I have 2010 Freightliner cadcadia dd15 , having problems with air not building up, secondary usually builds first , dryer pops Off when secondary air builds up, replaced dryer , check valve on 3rd tan… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
3,632 satisfied customers
My 04 freightliner isn't building secondary air. Its a 3 tank
My 04 freightliner isn't building secondary air. Its a 3 tank system with an automatic trans… read more
spankyjr1
spankyjr1
Retired
Vocational, Technical or Trade Scho
420 satisfied customers
Cant get air system to pressure up..no leaks new governor.
Can't get air system to pressure up..no leaks new governor. .I'm able to hold air pressure back with thumb at air compressor… read more
Andy
Andy
truck /coach technician
Vocational, Technical or Trade School
203 satisfied customers
Hi. I have a 2001 Western Star, serial # XXXXX Model # XXXXX
Hi. I have a 2001 Western Star, serial # XXXXX Model # XXXXX I am having a problem with the air system. The truck is slow to build air. At an idle it wont go past 90psi, at 1100 it will slowly build t… read more
spankyjr1
spankyjr1
Retired
Vocational, Technical or Trade Scho
420 satisfied customers
i have 2001 peterbilt and i had a lot of water in air system
i have 2001 peterbilt and i had a lot of water in air system first i changed the cit in the air dryer and still the same then i deside change the air dryer air governor and still i got water in the si… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
3,400 satisfied customers
I am working on a 1991 Pete with a L10. I just updated the
I am working on a 1991 Pete with a L10. I just updated the dryer with a AD-9 dryer. The dryer i took off i could not identify. It looked close and had 3 lines hooked up to it like the AD-9. The proble… read more
Jeremy
Jeremy
Certified Truck/Bus Technician
Associate Degree
2,672 satisfied customers
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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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