Kubota RTV 900 transmission problem - hardley moves in gear!

[dmatlock2]

in order to access this shaft you need to take the rear axle assy out and remove the half shafts then remove the brake and output bearing holders from each side of the front gearcase trans axle remove the ring gear and diff case. then you can get to the splined coupling on the output shaft and inner bearing. if i am understanding you correctly

I will get a dental mirror and check them. Bearing face looks unharmed.

 

[dmatlock2]

What is an acceptable amount of wear on the pistons?

 

[aurthuritis]

you should be able to remove that valve block and pistons as an assembly. you shouldn't see any wear. that doesn't look good to me. you have to replace as an assembly. can't just replace worn pistons but i think you already know that.

 

[dmatlock2]

you should be able to remove that valve block and pistons as an assembly. you shouldn't see any wear. that doesn't look good to me. you have to replace as an assembly. can't just replace worn pistons but i think you already know that.

It's locked on the shaft as far as I know. It's why I asked about removing the shaft being press fit.

 

[aurthuritis]

it has splines. look for a circlip? getting into the front case isn't hard just another step. look at the schematic on messiks

 

[aurthuritis]

that thrust bearing looks galled to me.

 

[dmatlock2]

it has splines. look for a circlip? getting into the front case isn't hard just another step. look at the schematic on messiks

I checked it, my hand will not fit in the fill hole. Unless there's an easier way than removing the whole assembly, that bearing is staying.

 

[aurthuritis]

it is your decision. you may as well save your money on new parts and scrap it. again just my opinion. that crunching you experienced could be that bearing locking up. look at the scoring on the face???

 

[dmatlock2]

it is your decision. you may as well save your money on new parts and scrap it. again just my opinion. that crunching you experienced could be that bearing locking up. look at the scoring on the face???

I will get a dental mirror and give it a good once over. The bearing turns with no noise and no metal was seen during disassembly. I'm considering removing the brake and axle.

 

[dmatlock2]

I will get a dental mirror and give it a good once over. The bearing turns with no noise and no metal was seen during disassembly. I'm considering removing the brake and axle.

The pistons look flawless. I'm not going to remove it.

 

[aurthuritis]

that sounds ok. don't forget assembly lube.

 

[bordercollie]

Taking a look at the picture in post 401 and wondering ... do those "pistons" look slightly out of place? or is it just the camera angle?

 

[dmatlock2]

Taking a look at the picture in post 401 and wondering ... do those "pistons" look slightly out of place? or is it just the camera angle?

It's a combination of camera angle and the springs pushing the cylinder block to the side.

 

[dmatlock2]

Waiting for parts now. Do you think this is a manufacturing flaw?

 

[aurthuritis]

Waiting for parts now. Do you think this is a manufacturing flaw?

no sir i don't. do you want to know what i think?

 

[dmatlock2]

no sir i don't. do you want to know what i think?

Go for it.

 

[aurthuritis]

Go for it.

improper lubrication.

 

[dmatlock2]

improper lubrication.

I only have one reason to say otherwise. The hole in that one piston. It didn't get there by improper lubrication. Although improper lubrication could have led to it's exposure.

 

[aurthuritis]

it will be mostly fixed up now. let us know when you start putting it back together.

 

[dmatlock2]

Still waiting for parts to arrive. So I decided to have some fun. I might have sanded a bit too far. The top is original back of the bearing ,bottom is from sanding.