How did Kioti Fix the Injection Pump Gear Problem?

ritcheyvs · Oct 27, 2018

Kioti tractors with the new stop solenoid design built between 2005 and 2008 were vulnerable to injection pump failures caused by broken gear teeth on the injection pump control sleeves. This did not occur in the earlier design that used an external stop solenoid or in later models after 2008. I would like to know what Kioti (Daedong) did to solve this problem? Is it simply a matter of tougher gears? Was the (twice) redesigned stop solenoid a factor?

I have recently replaced all of my control sleeves. Does that solve the problem permanently? Should I also replace the actual stop solenoid with the newest version? Fixing the injection pump (control sleeves) is not that hard or expensive but a broken-down tractor in the field (that cannot run even to remove the loader) is most inconvenient.

Does anyone know?

Fuggley · Nov 1, 2018

..... is that crickets I hear?

xcgreene · Nov 1, 2018

I've had my popcorn ready for this one too. Perhaps an email to a good dealer like MIE would be best suited

Steve_Miller · Feb 7, 2019

Just looking up part numbers on Michigan Iron's site and the stop solenoid shows an updated part number. Would be curious to find out if there is an updated solenoid that has been designed to eliminate the previous one. Would be interested to hear any info on this part as I would be willing to upgrade if it is an improvement other than waiting for it to break again. Anyone have any insight on the newer version? I bought an engine stop cable and installed it hoping I could disconnect the solenoid but the solenoid energizes to open the fuel supply and hold it open so I cant eliminate the solenoid slamming the rack open and close.

Steve

VictorW · Feb 7, 2019

I have a 2004 CK30hst with the older set up. My manual stop cable, factory item then, does pull the fuel lever closed. Otherwise, it's always open and the solenoid only reacts for about 5 seconds to turn off the fuel and stop the engine, going back to open. Is there any way you can have the cable completely control the fuel lever from full open to full close? I would think there is enough travel in the cable to give you what you need. I could make my cable do that if needed and just control open and closed manually. I've never seen the newer set up but think there should be a way to make that cable do what the solenoid does.

MichiganIron · Feb 8, 2019

From our experience, the injection pump rack issue was more related to the gears in the injection pump than the fuel shut-off solenoid. There is a "new" solenoid shown in the parts system due to an update in the wiring harness. The "newer" solenoids have a 3 pin plug, with a ground in the plug. Depending on the serial number of the tractor, if you change to the "new" solenoid, you may also need the adapter tail to use in the older 2 pin harness solenoid plug. If you had a pump rack issue, you probably have the older 2 pin solenoid plug.

Hope this helps

VictorW · Feb 8, 2019

MichiganIron said:
From our experience, the injection pump rack issue was more related to the gears in the injection pump than the fuel shut-off solenoid. There is a "new" solenoid shown in the parts system due to an update in the wiring harness. The "newer" solenoids have a 3 pin plug, with a ground in the plug. Depending on the serial number of the tractor, if you change to the "new" solenoid, you may also need the adapter tail to use in the older 2 pin harness solenoid plug. If you had a pump rack issue, you probably have the older 2 pin solenoid plug.

Hope this helps

That's nice to know. So change the gears in the pump and all should be good instead of different solenoids or manual shut offs. Thank you.

Steve_Miller · Feb 16, 2019

I'm assuming from what I've read that the solenoid opens the fuel and holds it open while the key is on 'correct'? If so, now that I have installed the stop cable, can I prevent the solenoid from 'slamming' the fuel valve by:
1. pull the cable before turning the key on (prevent the valve slamming opening)
2. push cable back in then start the tractor
3. to stop the tractor pull stop cable
4. turn key off.
Would this essentially eliminate the solenoid from working the fuel valve? Not sure if the solenoid is physically connected to the valve or is just a plunger and works to close by spring action as the stop lever is spring loaded from the feel of it. I can't remember when I had it all apart how the physical connects were made.

Steve

Steve_Miller · Feb 16, 2019

As far as the gears being changed, how do you know that new gears (from someone other than Kioti as they don't sell just the gears) would be any better. A new assembly from Kioti is over a $1000. I'm hoping the $60 stop cable can save me that $1000 bill and the day to replace that assembly again. Last time I got lucky and got it to run long enough to get the loader off to be able to work at it more comfortably. Other than this issue the tractor has been all and more than I could have expected. It will be the last one I will own, unless I win a lottery jackpot.

Steve