Diesel over-running - throttle?

[flyingace]

I have my 3000 diesel apart, so thought I'd pick brains about this while I have better access.

I can't seem to control the RPM once the tractor is at opertating temp. It will run at high RPMs even if I put the throttle at idle. I have to put the engine under a load to get the engine to slow down. Seems to happen more after going downhill. I have the Simms injector pump.

Any ideas?

Thanks in advance.

 

[jimont]

Have you been changing the oil regularly in that simms pump? If not, try changing that oil first (same oil as you're using in the motor.

 

[flyingace]

(quoted from post at 12:50:49 04/29/12) Have you been changing the oil regularly in that simms pump? If not, try changing that oil first (same oil as you're using in the motor.

I keep the oil changed in the pump. However, it was bone dry when I bought the tractor. Below is a pic of the top of the pump. I've alway wondered if something is missing, but it's hard to tell from the parts diagram if that's true.

 

[Keith Williams]

Where is the cable that comes from the throttle hooked?? Where is the stop cable hooked? I don't see them hooked up?
Keith

 

[flyingace]

(quoted from post at 17:04:59 04/29/12) Where is the cable that comes from the throttle hooked?? Where is the stop cable hooked? I don't see them hooked up?
Keith

The throttle cable is behind the pump. I removed the fuel shut-off cable to take off the sheet metal.