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Old 10-26-2018, 08:25 PM   #1
Skoolie
 
Join Date: Jan 2018
Location: Brunswick, GA
Posts: 150
Year: 1999
Coachwork: Blue Bird
Chassis: TC2000
Engine: 5.9 Cummins
Rated Cap: 84
5.9 Cummins Air Compressor Help

I have a 1999 TC2000 FE with 5.9 Cummins. Have had no issues with air brakes or air pressure since I bought it this spring. Always built pressure quickly - no leaks, no fluids in tanks, etc. All of a sudden, it won't build pressure above around 60. After reading various forums, I replaced the governor - with no change in symptoms. I have bled the tanks to 0, and it still builds to around 60 and stops. I have checked for leakage with engine running and stopped, and haven't found anything. I thought about maybe a clogged intake strainer, but can't figure out where one might be located. As far as I can tell the intake for the air compressor is connected to the engine intake manifold. Don't see any crimped hoses or lines. Any experienced input would be appreciated.

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Old 10-26-2018, 10:45 PM   #2
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Might test the gauge if all else looks right.
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Old 10-27-2018, 06:27 AM   #3
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If the brakes release and are not dragging the it could be the gauge. If not and you replace the governer, then the compressor might need replaced.
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Old 10-27-2018, 07:24 AM   #4
Skoolie
 
Join Date: Jan 2018
Location: Brunswick, GA
Posts: 150
Year: 1999
Coachwork: Blue Bird
Chassis: TC2000
Engine: 5.9 Cummins
Rated Cap: 84
Brakes won't release - was hoping it wasn't compressor since it does build pressure to 60 pretty quickly.
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Old 12-19-2018, 10:54 AM   #5
Skoolie
 
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Year: 2002
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Engine: 5.9 24v
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Sorry im not nay help but curious what the outcome will be. Learning about air systems
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Old 12-19-2018, 11:19 AM   #6
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If it builds quickly then stops it is unlikely an air filter issue or even a compressor issue. If it builds up slowly with the last few pounds taking forever then I would say compressor.

On older stuff the governor can be set to your desired max pressure. Might want to look into that, also check the safety valve. In fact you may want to check the safety valve first, see if when you reach 60 psi if you hear air venting at or near your air tanks
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Old 10-11-2023, 07:36 AM   #7
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Year: 97
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How did you fix it?
Same thing going on for my rig..
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Old 10-11-2023, 07:37 AM   #8
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How did you fix it?
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Old 10-14-2023, 07:35 PM   #9
Skoolie
 
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Year: 1999
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Chassis: TC2000
Engine: 5.9 Cummins
Rated Cap: 84
It was the dryer. I rebuilt it with Ebay parts as best I can remember.
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