I have 2010 freightliner cadcadia dd15 having problems with air not building up secondary usually builds first dryer pops off when secondary air builds up replaced dryer check valve on 3rd tank replaced both pressure relief valves on first tank.
Freightliner air tank pressure valve.
2003 freightliner columbia stock 21403400.
Pressure protection valve 1 2 inlet port nptm 3 8 outlet ports nptf 55 nominal opening pressure psi 45 nominal closing pressure psi.
This is done to preserve air for braking in the event that the auxiliary system develops a major leak.
The cut in and cut out range is not adjustable.
Turn the adjusting screw counter clockwise to lower the air pressure setting.
Air tank 54 long 9 diameter.
Be careful not to overadjust.
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Used air tank off a 2005 freightliner columbia 120.
Pressure protection valves pressure protection valves are used to isolate auxiliary air systems from the brake system.
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Freightliner 22 58431 000 air valve new item frt 22 58431 000.
Turn the addjusting screw clockwise to increase the air pressure setting.
Brake valve pressure protection.
Will be pressure checked good condition used take off.
It built up this morning released trailer valve air dropped to 60 wouldn t build up anymore set trailer brakes it finally built up after.
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Each quarter turn of the adjusting screw raises or lowers the pressure setting approximately 4 psi.
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Dimensions are l52 5 x d 9.