Up to 20% cash back kenworth t660 serial 221528.
Kenworth air brake valve.
Check automatic drain valve on wet tank for proper operation (see #5).
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Call the following number for the part.
Check #18a and 18b for back flow into service control line.
It supplies air to service side of brake chamber.
Turn the addjusting screw clockwise to increase the air pressure setting.
It only did it with the tractor brakes on (yellow dash valve out).
If a spring brake is leaking from the the spring brake to the service brake side, that air will travel back up the service line and out the exhaust of the.
I got my annual dot inspection done last week on my '99 kw w900.
Did that and the same problem.
Anti lock brake system (abs) sensor;
/ kenworth heavy duty parts;
The foot brake valve moves, opening channels within the valve that allow the air pressure waiting there to pass through and be delivered to the rear and front
Be careful not to overadjust.
Leaking air through valve mounted on the driver side below 5th wheel.
He said the foot valve needed replacing.
2012 kenworth t800 brake pedal with brake valve assembly.
The guy found air leaking thru the foot brake valve.