Kenworth T300 Air Susp. Question

[shadow7663]

I just purchased a T300. I noticed it has a switch on the dash to dump the air out of the back air bags. My question is this. Do I or don't I dump the air after backing up to the dock to get loaded? Or does it matter either way?

 

[davekc]

It is used primarily to level the truck with the dock. Let the air out and then proceed to back up. Doing this while resting against the dock might damage the truck and or the dock. Use landing gear in every instance unless you are throwing something on the back that is light and requires no entry by a tow motor.
Congrats on your new truck.

 

[shadow7663]

Thanks for the quick reply. Its a new used truck. The only problem is with the air conditioner. Can't get it to work. I took it to a shop and they seem to think its a wiring problem. They can power the a/c compressor when hooking power directly to it but if you try to run it from the dash controls it will not work. Has a full charge of freon also, they could not find any leaks either.

 

[davekc]

Since there are no modules, check the AC fuse in the truck followed by the inline fuse for the compressor. Chances are it is in the compressor harness. Not too hard to test.

 

[shadow7663]

Thanks Dave will do!