What is suspension dump switch?
The suspension dump switch is located in a switch pack. The shuttle valve traps air pressure in the air line to the suspension height control valve to keep the suspension dumped, or blocks air pressure in the air line to the suspension height control valve to keep the suspension inflated.
How does a suspension dump valve work?
Air is dumped from the air bags without affecting the air pressure in the air supply. When the pilot valve is shifted to the Travel position, air pressure is removed from the HCV dump valves. This allows the dump valves to return to the Travel position. The HCV can now inflate or deflate the air bags as needed.
Why is my Freightliner XC air suspension not working?
The chassis is on it’s last year of warranty, but since Freightliner can’t find the problem, the trouble shooting labor is coming out of my pocket. If the air compressor is working properly and air pressure does not come up, there has to be a massive leak. It could be a dump valve hanging up]
How long does Freightliner air suspension warranty last?
When the crack in the line got so that it could be heard, it was discovered. A call to Freightliner identified this area as a problematic area and the fix was to replace the entire air gauge module. It was fixed under 2 year Freightliner warranty and now holds for a few days. Good luck. Thanks all.
How big is the front shock on a Freightliner?
But clearly, going from a stiffer Bilstein to softer one would give an improved ride. But, that really doesn’t help when comparing shocks by different manufacturers. For the front Freightliner says 10″ +/- 0.25″. Redlands measured 10.25″ on both sides.
How to install Jack stand on Freightliner XC?
After safely installing jack stands or comparable, crawl under with some kiddie bubble solution or even dish washing soap solution. Apply some to each fitting and valve– a tooth brush (NEVER your own) helps apply it to hard to reach places.