Recent content by 200mph

FYI... RobertL45 and I spoke about his symptoms in detail via phone and text. After replacing both proportional valves his issues seems to be resolved. It's frustrating there isn't a definitive diagnosis when these proportional valves go bad. Continuity tests on the coil can be within specs...

Can always check for combustion gases using something like this. Combustion Leak Detector (harborfreight.com) I think autozone or advance auto rents this equipment but need to buy the fluid.

Very good point about running the fine calibration process mentioned above by kubotafreak. When going through this process, I experienced error message at times because the servo piston was no longer in the anticipated neutral (center) position. The only way to clear the error during the fine...

It sounds like your problem is very similar to what I experienced and suggest you focus on the HST proportional valves that are used to maintain servo piston position - overall direction and speed control. HST Issue - Jerky Motion - SOLVED | OrangeTractorTalks - Everything Kubota There are...

If your tractor uses proportional valves to control movement, both proportional valves are needed to maintain Swashplate piston position (for forward and reverse speed). With only one PV functioning only one direction will be possible and unpredictable. So if first statement is true, it sounds...

I plan on posting pictures, but it could be a while. During this endeavor, never found any pictures posted on the web. Other than poor operation, there is no evidence they are not functioning as intended.

Problem appears to be solved by replacing both Proportional servo valves for Forward and Reverse. Ran it for 10 minutes and it operated smoothly in forward and reverse. This was very frustrating to diagnose as both coils read within specification and their spools moved freely. What can't be...

Part II Current State: Tractor moves rearward with no HST pedal input Swapped the proportional valves: Tractor moves forward with no HST pedal input Swap back to original position: Tractor moves rearward without HST pedal input. Coils on the proportional valves read the same resistance. The...

Finally, some time to work on the tractor. Installed the new HST Pedal Sensor. Next step is to fine adjustment for the sensors following the procedure outlined in the manual. (See below) Short story: Error 73 during step 1 of calibration process which is for swash plate sensor. Theses errors...

Be aware an o-ring is typically used to seal the filter element to the metal housing. They can be lost or forgotten. Typically o-ring is on ID of filter.

Often times a spring is used between bottom of filter and bowl to keep the filter in place. If the filter drops down, unfiltered fuel could reach the injectors. Some fuel bowls have a feature that stands proud to keep the filter from falling to far within the bowl. Hopefully this is the spring...

Yes, you'll need to calibrate after the swap. Reason: Each sensor has some variability, so the calibration ensures the pedal or cruise operate as correctly. Before swapping, you can view sensor outputs through the panel. Might be interesting to see what the voltage is with change in pedal...

With respect to "Does it happen when cruise is on" I'm not 100% certain, so reluctant to answer... I remember trying cruise lever when it acted up and thought that it continued to be jerky. But it was a while ago and perhaps I'm not remembering correctly. What's your thoughts if acting up with...

Companies that have a monopoly on the replacement parts have little to no incentive to improve long term quality. The replacement part business is simply too lucrative when no competition exists. Case in point. The HST sensor is $125 while a similar auto TPS is under $35 at rock auto with...

Likely the sensor located on the HST pedal (or wiring circuit for this sensor) The cruise control lever and HST pedal sensor are the same part number, so it is possible to swap to see if error code moves with sensor or stays with circuit. Sensor is approximately $125 The sensor can be bench...