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Mr. Ford95 · Joined: 19 Apr 2005 Posts: 1907 Location: Orange, VA

Keep breaking them on my truck, anyone know a way to stop this or at least keep it from happening regularly?? Tired of taking my foot off the throttle after pulling a hill and it sticks to the floor which I then have to knock the truck out of gear and let'er sing against the govenor while I get to the shoulder to put a new one on. Is it as simple as getting stronger springs or is it the way I'm using the throttle??

Splitshifter · Joined: 19 Jun 2006 Posts: 669 Location: Right here

If you're just hooking a spring to the throttle arm on the pump, the constant swiveling motion is wearing on the hook end of the spring, causing it to eventually get thin and snap.(Been there, done that)

What I did to cure the problem is this: Weld (2) 1/4 or 5/16 washers together, attach the washers to the throttle arm with a bolt thru one hole (use a self locking nut and leave the bolt loose enough so the washers are free to swivel as the arm moves).

Hook the throttle spring thru the hole in the other washer.

Now when the throttle arm moves, the swiveling motion is at the bolt thru the washer, and the spring does not get worn at the end.

BTW, this was on Mack engines, but you should be able to adapt it to others.

yoopr · Joined: 01 Dec 2004 Posts: 12866

Ease up on the foot feed lead foot :P

Mr. Ford95 · Joined: 19 Apr 2005 Posts: 1907 Location: Orange, VA

Splitshifter wrote: If you're just hooking a spring to the throttle arm on the pump, the constant swiveling motion is wearing on the hook end of the spring, causing it to eventually get thin and snap.(Been there, done that)

It keeps snapping at the one end right at the hook. This is on a Cummins in my Ford L8000. I will look into doing that Split.

Sorry yoop, I ain't got very good pulling power when I hit a hill loaded so my foot is flat to the floor pulling them. Seems to be when they like to break, loaded and pulling a hill.

yoopr · Joined: 01 Dec 2004 Posts: 12866

Will a Heavier spring fit?
I've had springs so hard that you really had to push hard on the foot throttle

Mr. Ford95 · Joined: 19 Apr 2005 Posts: 1907 Location: Orange, VA

I would say no on the heavier spring only because the hole it hooks to is rather small and the spring I have barely fits thru it as it is. Guys at the shop have been rather unhelpful, just give me a handful of extra springs to carry in the truck. I don't mind fixing it myself on the side of the road, only takes 10 seconds to put a new one on. It's the fact of one breaking while coming up on stopped traffic, gotta act quick to knock the truck out of gear. I would rather not break one at all.

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