Jinma RPM STUCK

[spambrun]

Hi,
I got Jinma 254 and the RPM get stuck. I rev it to 1500 to move and the it won't go down anymore. I stop and Restart the tractor, still 1500.

I check the linkage is free. Then I when higher 1900, no it stuck at 1900?


Any Idea? Anybody got a exploding view to the Pump?


thanks

 

[greg_g]

If the lack of response you're describing is when using the hand throttle or foot throttle, I suggest you take another look at the linkage before considering any pump repair/replacement. The linkage is a little more complicated than is really necessary. And as a result can hang or stick when not installed or adjusted correctly.

Now if you disconnect the linkage altogether - and have the same problem when trying to increase/decrease engine speed right at the pump - then you're likely looking at a governor issue.

//greg//

 

[greenmule]

Gotta be linkage problem somewheres between hand and foot throttles and pump,,do you know how hand throttle works in connection to foot throttle,[in other words if you pushed hand throttle 1/2 way up,it will stay there untill you lower it,so that makes sense to what you are describing],,

 

[spambrun]

I check the linkage and the lever on the pump is at the beginning position so it is not the linkage

 

[Brad_Blazer]

Make sure there is clean oil in the sump of the injector pump.

 

[greenmule]

Well if its not the linkage,you'll need some smarter minds than mine.
If you disconnected the linkage and just gave it throttle by hand[on the pump],wonder what would happen,to lazy to go out and look at mine to see how,but it should be not hard,course if you say it ain't linkage its not.

 

[greenmule]

Sorry,greg already said that.

 

[valley]

Try increasing the RPM at the injector pump. If when you release the RPMs fall to normal you eliminated the linkage as the problem. Richard

 

[greenmule]

Sorry greg already said that.

 

[spambrun]

Well I open the pump and found some broken part and those piece were behind the plunger