Kubota RTV900 slow speed

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bozi22

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Hi, I have a speed problem with my RTV900. The engine speed increases, but the speed does not increase. At speed "H" it drives a maximum of 20KM/hour. The brakes are fine, the plates at the hydraulic drive as well. Thanks for the advice.
 
Filters changed, oil too. According to measurements, the RTV has the correct pressures (measured in the service), but it has no power.
 
bozi22 said:
Filters changed, oil too. According to measurements, the RTV has the correct pressures (measured in the service), but it has no power.
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If you did not use Kubota filters and more important Kubota's Super UDT Hydro oil that might be the root of your issues. I have no affiliation with Kubota but have seen others on here with the same problem when using non kubota stuff in these machines.
 
You need specialized equipment flow meters etc. Then you need the specifications to compare to also. The most economical solution would be to change the filters to oem and put sudt2 oil in the transmission. You should confirm that your engine is running 3600 to 3800 rpm also. Things you haven't told us that would help is the tire size and air pressure? And any grade or road conditions during testing?
 
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aurthuritis, are you shur about the 3800 rpm? i just checked my WSM and it says 3200 rpm, for a d902. hate to see bozi22 rod go thru side of block!! Cheers Scotty
 
scottybilt said:
aurthuritis, are you shur about the 3800 rpm? i just checked my WSM and it says 3200 rpm, for a d902. hate to see bozi22 rod go thru side of block!! Cheers Scotty
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So I have to measure the number of revolutions on the engine and it must be at least 3200?
 
scottybilt said:
aurthuritis, are you shur about the 3800 rpm? i just checked my WSM and it says 3200 rpm, for a d902. hate to see bozi22 rod go thru side of block!! Cheers Scotty
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If you wish to stay within oem spec you are correct. The same engine in other applications will run 3600 at full load and 3800 no load. It is a decision that each has to make for themselves. Just putting the info out. I don't know but i suspect the derated rpm spec is for emissions. The hst can be over turned pretty easy also but the 3800 is below that spec.
 
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