Rtv 900 x transmission problem

Check your linkages from the shifter all the way back to the tranny.
 
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Doc said:
Check your hydraulic fluids.
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Hi Doc
thanks for the info I’ve just purchased the Rtv x900 with a blown engine so I know nothing about it’s condition or what sort of life it’s had. I couldn’t find a d902 engine so what I’ve done is I’ve managed to install a Kubota d1005 engine in. Done a few modifications to get it to fit along with making a backplate to fit. Thinking this was the only thing wrong with the machine a blown engine but now it’s not showing any signs of moving I’ve changed the oil along with the filters for genuine Kubota ones along with the genuine oil. i know nothing about these machines so I’m learning as I go. The gear selector leaver in the cab seams to go through the gear positions very easily I’m thinking maybe it’s not selecting the gears inside the transmission ? Or do they go in gear easily ?. When the engine is running I looked threw the oil filler cap on top of the gear box and none of the cogs are moving if I stop the engine and push the Rtv by hand the shaft that I can see is turning ? Any suggestions would be much appreciated
 
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did you replace the super UDT2 in the tank under the passenger seat and is that reservoir full? the suction screen can be plugged and the hoses can collapse causing problems.
 
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Armyaviatr said:
did you replace the super UDT2 in the tank under the passenger seat and is that reservoir full? the suction screen can be plugged and the hoses can collapse causing problems.
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Hello yes I brought the genuine oil with the Kubota filters from Kubota and replaced the oil in the tank underneath the passenger seat I haven’t looked at the hoses from that tank to the back pump or the screen thanks for the heads up on this I will look at them hoses. I’ve now removed the main pump from the gearbox and I can turn the input shaft from the engine end by hand and the shaft is turning all the way through the gearbox so I know the shaft isn’t broken. The pump splines are also good on the shaft and where it goes into the pump all look fine. When I turn the top shaft on the main pump by hand the bottom shaft doesn’t turn but I’m guessing that this only turns once it gets to a faster speed than me turning it by hand ??? I can confirm that the gear leaver is also selecting the gears if I put it into gear and push the Rtv I can see the cogs moving threw the oil filter cap. so maybe my problem is in the main pump at the back of the machine that I’ve now got off ? The only thing I haven’t done is the small hydraulic pump that’s bolted to the Kubota engine that is driven from the injector pump isn’t connected as yet the pipe work from the hydraulic tank that goes to that pump isn’t connected to the small pump or where it goes from the pump back to the side of the gearbox I’m guessing this pump only runs the tipping body and the power steering this is the only part that’s not connected I didn’t think this would effect the machine going into gears ?
 
It's been a long time but if I recall correctly, the shifting forks could have popped out an may cause this issue.
Do a forum search here for "forks" or "shifting forks" and see if this issue may be in play.
Here's the first thread I found.

Shifter stuck in reverse, 2004 RTV900W

I backed up to the barn door. It's a grade. Done it several hundred times. I usually flip the lever out of reverse just as I'm stopping. I didn't this time. When I got back in and tried to get it out of reverse, it resisted. I tried all the usual tricks, none worked, then I pushed on the lever...
www.nettractortalk.com www.nettractortalk.com
 
bczoom said:
It's been a long time but if I recall correctly, the shifting forks could have popped out an may cause this issue.
Do a forum search here for "forks" or "shifting forks" and see if this issue may be in play.
Here's the first thread I found.

Shifter stuck in reverse, 2004 RTV900W

I backed up to the barn door. It's a grade. Done it several hundred times. I usually flip the lever out of reverse just as I'm stopping. I didn't this time. When I got back in and tried to get it out of reverse, it resisted. I tried all the usual tricks, none worked, then I pushed on the lever...
www.nettractortalk.com www.nettractortalk.com
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Hi there
nice one thank you from what I can see threw the oil filler cap I can just see part of the shifting fork and it is moving but i can’t see much thanks for your help
 
Armyaviatr said:
they fixed the shifter fork issue on the x models. since you have the hydro unit off it probably makes sense to open it up and check the status of the motor and pump inside. That unit runs between 6 and 7K for a new one. take a look at recent posts by sparks here: https://www.nettractortalk.com/foru...lure-and-rebuild-with-pics.19386/#post-143390 the hydros are almost the same.
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Hi thank you I will have a look into the pump part tomorrow. I did wounded if maybe because I haven’t attached the small hydraulic pump that bolts to the side of the Kubota engine block that runs the tipping body and the power steering would this effect the main gearbox not working ?
 
Armyaviatr said:
I do not think that has any effect on the hydro unit. there is a precharge unit on the hydro that can cause you problems. go to kubotabooks.com I do believe there is a work shop manual there that will walk you through the trouble shooting of the hydro unit. here is the link. last entry on this gage is what you need. https://www.kubotabooks.com/AutoIndex/index.php?dir=Utility Vehicles/
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Thank you this is great information very helpful I will look into this today. When I removed the linkage from the throttle mechanism that goes to the servo regulator on the pump the leaver on the regulator was just flopping about it doesn’t seam to lock into a on or off position maybe this is normal I will inspect this part to. I will also drain the hydraulic tank and remove the rubber hose from the tank to the pump there wasn’t much oil coming from the hose from the tank to the pump body I was surprised the oil only dripped out the pipe there was more oil coming from the pump so maybe the hose has collapsed inside or the filter part in the tank clogged up
 
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Found the problem i opened a cover on the side of the servo regulator and some tiny bits fell out a washer and some tiny parts. So I opened the pump casing and they was my problem the smaller part of the pump that has the rods and springs in it had exploded and the fork part that it sits in has completely split in half the shaft that goes threw the middle is fine. There’s 2 what look like half moon brass shoes that the fork part sits on is scratch they look like there is a screw that holds them in in the middle so I’m guessing they could be replace. There’s a bit of damage on the inside of the pump casing but nothing to bad that wouldn’t clean up. Other than the broken part the rest looks ok in the pump. Looks like it’s the end of this machines life
 
On my X1100 the pump in the hydro unit exploded and damaged the case. Kubota does not sell the case and I could not find one from a salvage operation. One guy told me that is the main reason for these units(x UTV's) to be scrapped. I purchased a new unit from my kubota dealer. I paid $6k for a new hydro unit. I have no regrets, and would do it again. I did find a company in MN that rebuilds them for about $1k less than a new one but figured the extra money was worth the peace of mind that a new unit provides. Forum member Sparks had good results when he rebuilt his. One other issue that I saw was the pick up screen in the reservoir looks clean but was blocked by something , they had to clean it with solvent. good luck
 
Armyaviatr said:
On my X1100 the pump in the hydro unit exploded and damaged the case. Kubota does not sell the case and I could not find one from a salvage operation. One guy told me that is the main reason for these units(x UTV's) to be scrapped. I purchased a new unit from my kubota dealer. I paid $6k for a new hydro unit. I have no regrets, and would do it again. I did find a company in MN that rebuilds them for about $1k less than a new one but figured the extra money was worth the peace of mind that a new unit provides. Forum member Sparks had good results when he rebuilt his. One other issue that I saw was the pick up screen in the reservoir looks clean but was blocked by something , they had to clean it with solvent. good luck
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Hi there thanks for the info I would think the casing would be fine it’s the smaller cylinder block that’s exploded if I could get this part and the fork part it would possibly go again. I think I know what happened to the Rtv now I recon the hydraulic pump went and someone removed the good engine and put a Blown engine in the machine in its place to make it look like it just had engine failure. I was told when I brought it the engine was dead and basically I brought a dummy machine I didn’t pay much for it £2000 I haven’t got the heart to pull it all apart and sell the bits off it was only going to be a wheelbarrow to use in the garden not a machine that I would use every day. I put the bigger engine in because I couldn’t find a d902 so I put the Kubota d1005 engine in. These Rtv do turn up in auctions hear in the Uk I might hang on to it for a bit and see if another machine comes along
 
The parts are readily available here in the US. I would bet Messicks would ship overseas but if you can get them from your dealer they would be cheaper.
 
Armyaviatr said:
The parts are readily available here in the US. I would bet Messicks would ship overseas but if you can get them from your dealer they would be cheaper.
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oh it might be worth me having a look on there websit. When I put the bigger engine in I brought a flywheel from the us on ebay as I needed it to have the correct coupling on it to go onto the gearbox shaft the shipping was only £70 the part was only £60 and it was hear in 5 days. I brought a new headlight new from Kubota in Irland and they charged me £300 for just the headlight so I recon the parts would be silly money hear in the Uk. I will have a look at Messicks thanks for your help with this much appreciate
 
I’ve found a used pump from a Kubota trv 900 the guy that’s got it is saying the parts will fit my Rtv X900 pump. The casing on the 900 is different than my X900 but the parts inside do look the same as my parts. Does anybody know if the internal parts would fit my pump ?
 
They are not the same. I crossed a 900 pump with a x900 pump and they are different. The pistons on the assembly block are lapped into the block, meaning you can not change the pistons around inside the assembly. Even if they were the same I would shy away from that. These hydro units are precision units. Putting used parts into one sounds like a recipe for disaster. Taken care of they will last a long time. It seems to me that most failures on here are due to poor maintenance.
 
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