Case 580c throttle lever not staying set

[PaulMckee]

I have a Case 580c backhoe. I replaced the brake master cylinders, which required the removal of the dash console that required removal of the shuttle and throttle levers/assmbly. After reassembling the console and shuttle/throttle levers and beginning to test my brakes, I noticed that the throttle lever was loose and not staying set. Of course this caused the machine to die without either holding the throttle lever in place or keeping the foot petal pressed enough. I have surfed the web and this forum over several times and not able to find any help on this. And I’ve searched the Operators/Service manuals without any discovery. There must be something that keeps resistance on the throttle lever, but I’m not seeing it anywhere in the linkage. And this was working fine before I removed/disassembled the console/shuttle/throttle to do the master cylinder replacement, so I’ve introduced the problem somewhere. Your expertise is welcome. Thanks!

 

[Coy Lancaster]

Tighten nut #6 to put tension on disc #5 that is what holds the throttle lever in place.

 

[PaulMckee]

Thanks Coy! Seeing and hearing your description is bringing back some memory during disassembly. :/) That console is a bear to navigate. Any best practices for accessing that area? Can it be reached by removing the instrument cluster? Thanks again.

Oh, I'm also curious where you located that diagram... service manual? It's resolution is too small for me to see the finer details and reference numbers. Thanks.

 

[Coy Lancaster]

You should be able to get to it through the instrument cluster opening. I looked the diagram up on CNH parts website www.mycnhistore.com

 

[redranch]

If you ever have to take the master out again this is how i did it when i had a C. Take a hole saw and drill a hole on the side of the console across from the master. You can remove it that way, then just plug the hole for next time. Saves a lot with out taking out the console.

 

[Billrog]

Do not get any ( lube, oil ) on the friction disc .

 

[PaulMckee]

Thanks all. I'm not able to get access through the cluster hole. Still a bit baffled how I disassembled this coming off. But at least the problem is identified... just a matter of access.

 

[PaulMckee]

Good idea @redranch In hindsight, for sure the better idea. It was a beast.

I did finally get the throttle resistance mechanism reconnected. And in doing so, understood why I didn’t remember disassembly… because I didn’t. When I removed the throttle lever, it popped free. I remember hearing a pop, but not knowing what it was.

My rpm gauge is no longer working and is pegged out on the high side. Curious now about what may have happened there. I’ll search and post accordingly on that topic.

Thanks again all for comments and this community for willingness to share knowledge and experiences.

 

[AGoebel]

Paul,

How did you get throttle tension hooked back up. Going through same thing. Any help would be appreciated, thanks.

 

[Coy Lancaster]

Paul,

How did you get throttle tension hooked back up. Going through same thing. Any help would be appreciated, thanks.

What part of the throttle are you trying to hook up