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Related Medium and Heavy Trucks Questions
My haldex pure air plus dryer is cycling every 20 seconds
my haldex pure air plus dryer is cycling every 20 seconds and won't allow pressure to build above 60 psi … read more
Bradey V
Bradey V
Certificate
I have a 2014 International Prostar Daycab. It has been a
Good Morning Mike. I have a 2014 International Prostar Daycab. It has been a good truck for me, however there is always air coming our of the purge valve on the air dryer. I changed the purge valve la… read more
Curtis B.
Curtis B.
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Associate Degree
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1998 Freightliner FL80 Cummins 8.3 will not build pressure
1998 Freightliner FL80 Cummins 8.3 will not build pressure past 60 PSI on the service side … read more
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Joe
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Is again. My truck is a 2012 freightliner Cascadia. So I was
Hey this is Keith again. My truck is a 2012 freightliner Cascadia. So I was replacing a hose that goes to the power steering pump on driver side of engine. When finished and stepping away i mistakenly… read more
Roy Belding
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Name is will my primary air gauge gets up to around 60psi
Hey my name is ***** ***** primary air gauge gets up to around 60psi but my secondary is around 100 I drained the tanks already primary still got around 50-70 but then drops when I hit the brakes … read more
james Roberts
james Roberts
Maintenance assistant
Vocational, Technical or Trade School
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I have a t800 KW; my low air pressure light and buzzer will
I have a t800 KW; my low air pressure light and buzzer will not go out even after the air dryer has cycled and im at 120 psi They replaced my starter last week and when they did, they broke some wires… read more
Wayne
Wayne
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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
Mike Mcmillan
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2009 international prostar purges air every 15 seconds
2009 international prostar purges air every 15 seconds already replaced governor, purge valve, air compressor head for the unloader valve and a new signal line from governor to the air compressor. Tes… read more
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My compressor is leaking heavily under load. I used soapy
My compressor is leaking heavily under load. I used soapy water to see if I could find the leak. It was coming from the air governor valve. I replaced the valve but the leak persists. The system still… read more
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Mike Mcmillan
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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
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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
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Mike Mcmillan
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On a 3007 international 9400. The air psi gets to 120 and
On a 3007 international 9400. The air psi gets to 120 and dumps at the dryer. Once it dumps it stays leaking. What do I need to look at?… read more
Curtis B.
Curtis B.
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I have a dump truck that every time the air break relay
I have a dump truck that every time the air break relay valve relieve the pressure coming out with oil, what I have to do to fix it? thank you… read more
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1999 international 4900 DT466e I cannot seem to get my air
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I have a 1990 Country Coach motorhome on a Gillig chassis.
I have a 1990 Country Coach motorhome on a Gillig chassis. On my last trip a few weeks ago, I kept hearing purging of air below the driver's side. There are two needles on the dash instrument panel-a … read more
Roy Belding
Roy Belding
7,582 satisfied customers
I have a 2000 Freightliner fld 120, air system will charge
I have a 2000 Freightliner fld 120, air system will charge up, but will not start pumping back up if air is lost, replaced air govener, and dryer,… read more
Wayne
Wayne
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Vocational, Technical or Trade Scho
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In this same truck I changed out my governor... I notice that
In this same truck I changed out my governor... I notice that while the truck is running the air gauges fluctuate between 100-120. Is this normal? What concerns me is that when it gets down to about 1… read more
spankyjr1
spankyjr1
Retired
Vocational, Technical or Trade Scho
420 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
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