RTV X900 destroyed hydraulic/HST drive system

iforland

New member

Equipment
BX2350
Dec 5, 2021
2
0
1
UK
I’m trying to repair a 2018 RTV X900 that has completely destroyed part of its hydraulic/HST drive.

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As well as the damage shown above the piston block is totally destroyed as well, parts prices are mounting up but I have a question that I wanted to ask to see if anyone on here has an opinion….

The Swash plate shown above is the smaller of the 2 from the X900 (identical to several of the X-series RTV’s) and is part number K7591-14244, I was searching Messick website and it shows that this is a common part with 60 kubota models, including the RTV500 and RTV900 models.

The thrust bearing, part number K7591-14720 (also on Messicks) is $330 but is only common with 25 models and not the RTV500 and RTV900 models….so I had a look at those models parts lists and they list a different part number for the thrust bearing of K3161-11310, but this only costs $61….can anyone tell me what the difference is???

The only difference I can see is that the plastic ball race is white for the $330 one and black for the $61 one…

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What made me originally search was that the larger thrust bearing for the other half of the drive, part number K7591-14210, which is significantly larger is only $97…go figure