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Related Medium and Heavy Trucks Questions
Just replace the air dryer but still getting over 150 PSI in
Just replace the air dryer but still getting over 150 PSI in air system … read more
Curtis B.
Curtis B.
Technician
Associate Degree
1,571 satisfied customers
2017 Volvo Semi Truck vin# ***************** I need the
2017 Volvo Semi Truck vin# ***** I need the location of the governor and the air dryer for the air compressor. Diagrams and or pictures will be really appreciated as I can't find them and not sure wha… read more
Bradey V
Bradey V
Certificate
I have a 2005 Freightliner Columbia not building air
I have a 2005 Freightliner Columbia not building air pressure to the second tank also. I have put in a new compressor, governor, and check valve. Don't find any leaks anywhere... … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
4,737 satisfied customers
I have a Oshkosh the air builds up to 80 psi and stop and
I have a Oshkosh the air builds up to 80 psi and stop and about 3 minutes later it stop to build up to 120 psi … read more
spankyjr1
spankyjr1
Retired
Vocational, Technical or Trade Scho
420 satisfied customers
I have a 1988 pet engine but air build up really slow. 1988
i have a 1988 pet(###) ###-#### engine but air build up really slow … read more
spankyjr1
spankyjr1
Retired
Vocational, Technical or Trade Scho
420 satisfied customers
I have a air pressure problem on my Mac truck. It does not
I have a air pressure problem on my Mac truck. It does not generate enough air pressure on the primary side there is a 40 pound difference between the primary and secondary and when we work the truck … read more
Mike Mcmillan
Mike Mcmillan
Shop Foreman/Triage Tech
Associates
4,083 satisfied customers
Truck Vin H72526 cummins ism air compressor part number..
Truck Vin H72526 cummins ism air compressor part number.. problem started a couple days ago..truck would build way too much pressure 140+ psi. I changed the governor out and it built and stayed perfec… read more
Mike Mcmillan
Mike Mcmillan
Shop Foreman/Triage Tech
Associates
4,083 satisfied customers
2010 cascadia.. air compressor pumping good air .. alot less
2010 cascadia.. air compressor pumping good air .. alot less coming out of drier when not bolted to tank. too fittings off other end no air going throug tank.. i think...there should be coming fron on… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
4,737 satisfied customers
1999 kenworth t600 Cummins n14 red top. Air compressor not
1999 kenworth t600 Cummins n14 red top. Air compressor not building air pressure pass 20 pounds. Replaced compressor and it's the same. Air not coming out from the hole that goes to. The governor.… read more
spankyjr1
spankyjr1
Retired
Vocational, Technical or Trade Scho
420 satisfied customers
Air dryer started purging every minute and a half or so. No
Air dryer started purging every minute and a half or so. No loss in pressure. Swapped the air dryer and new governor. Started doing that I'm very cold weather. Still doing the same thing after new par… read more
Don
Don
fleet superintendent
Vocational, Technical or Trade Scho
1,636 satisfied customers
Working on a 2007 Freightliner Columbia with Series 60 Detroit.
Working on a 2007 Freightliner Columbia with Series 60 Detroit. Builds air very slow and wont purge from new drier. Will build to about sixty psi at idle then when reved to around 800 RPM will build t… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
4,737 satisfied customers
My '07 Kenworth W900 will not build air pressure. I had a similar
My '07 Kenworth W900 will not build air pressure. I had a similar problem last fall and replaced the air dryer with a reman air dryer (Bendix AD-IS) and new governor. That fixed the problem. A few wee… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
4,737 satisfied customers
My air system was frozen due to someone bypassing my air dryer
My air system was frozen due to someone bypassing my air dryer I put new air dry in yesterday and connected everything back up but now compressor has no pressure. I can hold my finger over outlet and … read more
spankyjr1
spankyjr1
Retired
Vocational, Technical or Trade Scho
420 satisfied customers
My air brakes pump up to 135 psi but when I release park brakes
My air brakes pump up to 135 psi but when I release park brakes and supply air to trailer the psi drops to 100psi and does not build backup to 135psi unless I shut it down and drain air tank then it b… read more
Travis A. Wells
Travis A. Wells
Truck Mechanic
Associates of Applied Science
15 satisfied customers
air is slow to air up. not sure how to check the unloading
air is slow to air up. not sure how to check the unloading valves or the governor. There doesn't seem to be any air leak. I can't hear anything. But I know that there is a way to test between the gove… read more
spankyjr1
spankyjr1
Retired
Vocational, Technical or Trade Scho
420 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
2,740 satisfied customers
I have trouble with brake compressor not enough PSI on a 1997
I have trouble with brake compressor not enough PSI on a 1997 freightliner fld 120 with Cummins N14. How long would it take to change the compressor?… read more
Jim
Jim
Diesel tech.
212 satisfied customers
08 ford f 650 6.7 cummins flat bed tow truck , developed low
08 ford f 650 6.7 cummins flat bed tow truck , developed low air pressure for a moment while driving , pulled over reved to 12oo and pressure built back,. Sat overnight and would not build pressure . … read more
JANECZFJ
JANECZFJ
158 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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