start it up and it gets to 50 pounds and stops building air and will go no higher on the air dryer (that is less than a year old) that valve at the bottom opens like its stuck open?
When you drain everything than start it air builds up fast but as soon as it gets to 50psi it stops
2005 freightliner will only build air up to 50psi
Discussion in 'Trucks [ Eighteen Wheelers ]' started by BAYOU, Nov 15, 2011.
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I would try replacing the governor. They are cheap!
rwings Thanks this. -
I also agree, governor
very common problem -
if you can't get a governor, or have trouble getting the old one off; take it apart (after dumping the air pressure) and check/clean the insides. I got away with it twice (couldn't break mounting bolts free) on a common type D2 governor; took a half hour, a pair of inside circlip pliers, soap and water.
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I would start with the governor as others have suggested and work back as necessary. -
Tape the purge valve on the bottom of drier sounds from your post it's sticking open,
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