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  1. Howdy All, The weather in a word here has been MISERABLE, quite cold for this area, the usual rain and here lately freezing ice and snow. I have been doing what I can on the Pete getting ready to eventually drive over to Scrap, Brian's home and do some wiring. I noticed the last time I started the Pete, that I couldn't raise the idle during warmup, I noticed that when I drove the truck home after getting the commercial hitch removed the Jake brake didn't work. It was a couple of days ago when I started the truck I noticed that there wasn't any free travel in the clutch pedal, the pedal was firm right at the top and the pedal sat about an inch and a half lower then it normally did. So I started working the net trying to figure out if any of these things were related, it turns out that they ARE. What I found was that the clutch return spring had broken, this is a simple spring you could probably get at a good hardware store the problem is you can't even see the darn thing from under the truck. I can see the end that is attached to the frame but I can't see the linkage that the other end attaches to. With this spring being broken, it allows the pedal to drop, this in turn actives the clutch safety switch which turns off the Jake brakes and the cruise control. I proved this by starting the truck and then putting my foot under the pedal, pulled the pedal up with my foot and the cruise control worked to increase idle speed. So I thought I had the problem figured out, well I was right about the clutch return spring but then another problem caused the same thing to happen, it turns out that the plunger that activates the air brake when you push down on the brake pedal was sticking. So again I started looking on the net and found that this was a common problem on the Peterbilt's. So I took the brake pedal out, pulled the plunger out of it's casting, cleaned everything up and it now works just like a new one. But that still leaves me with replacing that darn clutch return spring, I have exhausted every thing I can think of on the net; tried youtube nothing, tried the resource guide nothing, looked at every Peterbilt, site I could find nothing, the only thing I did find was where one driver said that to replace his he had to remove the air tank that is bolted to the back of the battery box. I had a heck of a time getting under the truck to take a look in that area and I'll be darned if I can see where removing that air tank would allow access to that area but it might. I'll have to wait until the slush melts before I can tackle that job. In the meantime if anyone can offer any guidance how to replace that darn spring I sure would appreciate it THANKS. Dave