aurthuritis
Well-known member
so you think that part failed because it wore out early? do you think the valve plates were defective also?
Kubota RTV 900 transmission problem - hardley moves in gear!
- Thread starter PACKASAURAS
- Start date
I think the piston was defective from the forge. The plates being wore are a side effect of the metal from the piston wearing away and then being dissolved in the oil. Not unlike cleaning metal filings from sand paper in the oil. The hst compartment holding the oil and cylinder blocks are not filtered once it's in there. The previous owner didn't want to spend the money to replace the parts, so they stuck it back together and traded it for something else. They possibly got frustrated because they got the same crap about try super udt oil and new filters, come to find out it's a real mechanical issue and not cheap. I didn't find any metal in the hst when I cleaned it out, but the damage was already done and I have only put 50hr on it. I'm planning on changing the fluid a couple of times in the near future and watch for metal.
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aurthuritis
Well-known member
that is interesting. but please understand that when someone asks for help on here they usually get the standard "change the oil and filters" line. this is usually better than unbolt and inspect internals because it base lines the problem to something other than a faulty filter. it would be a shame to take a transmission apart when a filter change and oil will sometimes fix things.
aurthuritis
Well-known member
looks like heat damage from friction. opinion
Possibly exposed the defect.
aurthuritis
Well-known member
yep could be. it looks like a heat ring around that hole. good thing you rebuilt it. good as new now? and good that you shared it so others can feel capable and unafraid to get dirty and fix them.
aurthuritis
Well-known member
i predict that he is out riding with the wind in his hair and a firm grip on the steering wheel.
He may even need the seatbelt now.
aurthuritis
Well-known member
i hope so!!!!Ohio_Pawpaw_Grower
Member
I hate to sound ignorant but what is the role of that pictured part of moving the vehicle? I am mechanical but not hydro or diesel mechanical.
aurthuritis
Well-known member
I think that sounds like a good plan.
aurthuritis
Well-known member
Hi, did you have trouble removing the port block in picture number 3. I can move it about half inch then it seams to be stuck on the shaft. Am i missing something or dose it come of with more force? Didn't want to force thing too much in case i missed something!
It wasn't physically difficult, but it took some twisting. It's in a tight spot. It's as bad as some alignment pins. Side note it's not straight and level with the frame.
