What kinda pump

[Trapper]

It was fine this morning when I fired it up but after I set up this 50 ton it wouldn't throttle down. No matter what position by hand or pedal.

 

[Snedge]

AFC Cummins pump.

Make sure the throttle lever on the pump is tight on the shaft.

 

[Trapper]

I will double check.

 

[Trapper]

Cummins pt pump. I wonder if its the idle spring is broken?

 

[RockinRam96]

What is this on? I know on my 73 Kenworth the throttle return spring is on under the floor on the pedal. There isn't a return on the pump itself.

 

[Snedge]

There is a return spring on the lever at the pump.

 

[Trapper]

Ya the spring is there. And it's on the idle stop.

 

[RockinRam96]

There is a return spring on the lever at the pump.

Not on my small cam. If I take the throttle linkage off the lever arm flops around all willy nilly. There are no return springs on the pump itself.