Medium and Heavy Trucks

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2010 Freightliner Cascadia vin# 1FUJGLDR2QS9P0529 The purge
2010 Freightliner Cascadia vin# ***** The purge valve keeps popping out so it wont build up air pressure. We're being told the air dryer was changed last week but they didn't change the purge valve. T… read more
james Roberts
james Roberts
Maintenance assistant
Vocational, Technical or Trade School
3 satisfied customers
2014 International ProStar maxxforce no air pressure changed
2014 International ProStar maxxforce no air pressure changed air governor valve on bottom of dryer mechanic says good air coming from compressor line don't know what else to do they found no air comin… read more
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Mike Mcmillan
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I checked the wet tank for a check valve and it doesn't have
Second opinion] Hello I checked the wet tank for a check valve and it doesn't have one and I didn't see any sign of one on the dryer from the dryer to the compressor or the dryer to the wet tank how m… read more
Expert
Expert
7,461 satisfied customers
I checked the wet tank for a check valve and it doesn't have
Hello I checked the wet tank for a check valve and it doesn't have one and I didn't see any sign of one on the dryer from the dryer to the compressor or the dryer to the wet tank how much of a problem… read more
Wayne
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Vocational, Technical or Trade Scho
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I have a 2000 kw 900 with a cat 3406e and I'm having issues
Hi I have a 2000 kw 900 with a cat 3406e and I'm having issues with my air system one is that my air tanks accumulate an excessive amount of water and second is that my front tank psi only reaches 90 … read more
Mike Mcmillan
Mike Mcmillan
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2005 mack granite e7 wont build air. I installed new
2005 mack granite e7 wont build air. I installed new compressor, new govner, new air dryer. Will not build air at idle. Air lines are not kinked. No regulators going into tanks. … read more
Bradey V
Bradey V
Certificate
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
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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
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I have a 2007 international 9400i that is lossing power. We
I have a 2007 international 9400i that is lossing power. We recent just replaced fuel filters about 30 miles ago. What do you think the problem could be?… read more
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truck /coach technician
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Will not build air pressure above 60 lbs. New compressor and
Will not build air pressure above 60 lbs. New compressor and govenor … read more
Wayne
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2007 international 9400i, using lots of water, done an
2007 international 9400i, using lots of water, done an inframe, had head sent off and pressure tested, replaced water pump and radiator, all in attempt to get issues fixed. Only other option I know is… read more
Curtis B.
Curtis B.
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Eaton 10 speed shifts to high range fine but will not shift
Eaton 10 speed shifts to high range fine but will not shift back to low range until air pressure is gone … read more
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I have a 2007 kenworth t800. I won't build air pressure in
Hello I have a 2007 kenworth t800. I won't build air pressure in tanks. But the pop off valve keeps popping off every 15 seconds. Compressor pumps fine. What could be the problem?… read more
Curtis B.
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1999 international 4900 DT466e I cannot seem to get my air
1999 international 4900 DT466e I cannot seem to get my air compressor to build air. There is no air coming to my tanks it seems but the main line off of the compressor and going to the air dryer is ge… read more
spankyjr1
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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
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spankyjr1
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I have a problem with a Kenworth T600, Its a 1997 tractor trailer
I have a problem with a Kenworth T600, Its a 1997 tractor trailer truck. The compressor does not go into unloaded stage long enough to cool and the air dryer unloads about every 30 seconds. The compre… read more
Jeremy
Jeremy
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Associate Degree
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I have a 2008Pete with a C-13 in it. The secondary tank will
I have a 2008Pete with a C-13 in it. The secondary tank will build air but the primary wont. After the secondary hits 90 psi, the primary will slowly build, but never to reach even 90psi. What to look… read more
Jeremy
Jeremy
Certified Truck/Bus Technician
Associate Degree
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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
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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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