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Air system problem new compresser and air dryer air feeds
air system problem new compresser and air dryer air feeds into the main tank but will not feed into other tank … read more
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Daniel Wilson
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I have a 5.9 cummins in motorhome. Air compressor is not
I have a 5.9 cummins in motorhome. Air compressor is not supplying enough air for brakes. I rebuilt air dryer and drained tge tanks so far. … read more
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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
Roy Belding
Roy Belding
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I have an 1999 Peterbilt 379 with a Detroit Series 60 11 1L
Hello, I have an 1999 Peterbilt 379 with a Detroit Series 60 11 1L engine. This morning the air dryer started to purge constantly every 30 seconds. Once the pressure is built up the air dryer purges a… read more
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I have a 93 Freightliner with a N14 Cummins motor and it
I have a 93 Freightliner with a N14 Cummins motor and it builds up too much air pressure. Governor opens to purge air dryer but doesn't seem to stop building pressure. Gets up to 200 or 230 PSI … read more
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Buying a 34 foot motorhome with 5.9 L6 in it, want to pull a
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I have a 2007 freightliner columbia mbe4000 i cant get it to
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Daniel Wilson
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Auto Mechanics 1&2/diesel mech
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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
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Vocational, Technical or Trade Scho
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It is actually a RV but on a Freightliner chassis and it has
It is actually a RV but on a Freightliner chassis and it has rust in the air system. What needs to be done? … read more
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cumminsdr
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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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I have a 2001 5.9 Cummings Dually with a 5 speed 202k miles.Some
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I have a Paccar/Cummins PX8/ISC motor that wont build air. I
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Wayne
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Vocational, Technical or Trade Scho
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d9 dryer on a 2000 fl70 with a isc cummins.... constantly purges.
d9 dryer on a 2000 fl70 with a isc cummins.... constantly purges. new d2, purge valve rebuilt... i want to say a unloader/ head kit but i am unsure… read more
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Meet the Experts:

Daniel Wilson

Daniel Wilson

4,737 satisfied customers

Owner at DJ Wilson

Cat Man

Cat Man

Cat Engine Expert

5,234 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

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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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