L3130 : PSB 2004-055 service bulletin question : hydraulic pump oil starved

[hendr1x]

Hello everyone,
I bought my first tractor over the winter (2004 L3130 Manual 4x4 - 2k hours). Seems like I might have made a bad choice. I just found out that my serial falls into the tractors affected by PSB 2004-055. I attached the bulletin. Apparently when operating the backhoe (BH90 for me) on a hill the hydraulic pump bearing/gears get starved of oil. I don't feel comfortable using the tractor until I can confirm there is no damage and I implement the fix.

I'm interested in any input on this issue. I guess first off, I've attached some pictures...I can't tell for sure if mine was not done. I assume it wasn't but the diagrams etc are hard to match up to what I am seeing. Second, I wanted to make sure that this is something I can do. I'm a pretty good mechanic but it I'm not clear if this requires opening up the actual pump...something I am not confident I can put back together perfectly.

Thanks for any help

 

[jonsstihl]

you can always jack up the front wheels with the loader to keep the tractor level when using the backhoe. the problem seems to occur only when the front wheels are on the ground and the backhoe stabilizers are extended all the way.

I'm not familiar with what is what but sounds like you have to seperate the pump from the pump holder now depending which part is which that could involve partial disassembly of the pump.

I would definitely hose down that area with some soap and water before any disassembly of components.

 

[David_Kb7uns]

Been there done this. The kit has a new pump drive housing with a calibrated hole to bearing and a threaded boss that goes to a new oil filter base with a feed hole going through tubing with mounting hardware to supply the oil. Took half a day to do it was upset because Kubota would not fix it unless it failed, did not want a broken hydraulic pump drive gear.