Oil Filters

K

KubotaTechnician

Member
There have been reports of a "no drive" condition in RTV's in very cold weather. The apparent cause is that some filters on the hydrostatic transwere plugged with water/ice. I have not seen this, but several dealers reported it. If this happens to you, my recommendation would be to buy at least two filters, change one and keep one spare. The cause wassaid to be condensation, which means this situation should be fairly rare.</P>


</P>


</P>
 
I would think that it would take considerable time to get enough condensation water in the filter. Were the filters in for a long time? Where the RTV's being run for short duration then shut off and left out in the cold? If filter is frozen did the pump run dry or was there enough oil in pump to lube? Glade I haven't experianced this. New filter change at the start of winter a must.
 
KT - Thanks for the info/heads up.

Last week I experienced the "no drive" with my machine.

I store my 900 in a heated barn (50 degrees). The outside
temp was at zero on the day it happened. About the same
time I began analyzing the problem, it returned to normal
operation.

Just finished winching the RTV up a steep hill (in neutral),
rolled the cable back in, put the tree wrap and chains away,
and jumped in to drive off.

Glad to know it's nothing to get concerned over, this was the
only time it has happened and this is my second winter with
the RTV.
 
EZ, I don't know the answers to your questions. This was just one of those bits that gets spread around to help the techs diagnose things. I suggest that perhaps the water in the filter may have gotten there over a period of time, which varies depending on individual operating conditions. It could be the "shock" method (as seen in the above post) or it could be that something happpened over the past maintenance period, and the filter collected it as a matter of routine. </P>


Bottom line is, if you see a situation where your machine goes from a warm/humid environment to a cold one, and it shuts down, swap the filter. Also, take care to at least change the filter (hydro oilintervals vary from 200-250hrs depending on manufacturer) every 50 hours. </P>


Also, Since there are two filters, the filter in question is on the backend, on the hydrostatic drive unit. The one on the side is not only for the lift cylinder, but also has engine coolant immediately next to it in the small cooler.</P>
 
Is it the Suction Filter that clogs or the other one? </P>


I hit 52 hrs today and hadthe wife stop at the dealer and pick up some SUDT and the 2 filters and the filters are $15 bucks a piece!!I was alreadythinking of changing the filters every 50 hrs from here onand Kubota is PROUD of their filters.! Wix has a filter for everything but Suction filter and say they will have that soon and they are about half the price of Kubota.</P>
 
KT, in your previous post you said the filter that clogs was the one on the rear of the RTV, isn't this the suction, orange, filter ? My understanding was the one on the side , with the cooler was the HST, yellow filter. jdh1
 
Friendly Advise:</P>


We all know that the Kubota filters are priced like gold. But, best stay with them, know a man who went to the " dark side " with other filters. And lost ALL his performance on his RTV. He got spanked, and will never make that mistake again !!!!!</P>


Thought I'd just throw that in >>></P>


TAKE A PEEK AT THIS THREAD !!!!</P>


http://compacttractorreview.com/cs/forums/thread/10082.aspx</P>
 
Have nothing to do with this source, except this is where I purchase my Kubota filters. Go to eBay-store-mower parts direct, and look at the kits available for various Kubotas and other brands. I have purchased and they are Kubota filters, the price and shippingare very good. Not trying to get anyone to not trade at Kubota dealer but we all look for other items for price,quality, etc.....lights etc.... I also use Kubota Super UDT, Kubota engine oil and change at the recommended intervals. They also have some RTV 900 scale models that are priced right. Maybe there are other sources that will match this price, if so let me know.</P>


Nick</P>
 
I only use Kubota OEM filters and SUDT. Machine has just 22 hours since the last filter/fluid change.
 
Yup, thats correct, the orange filter on the back is on the input side of the charge pump. Thats the one without any coolant to heat it. To be honest, we were not told which filter, but logic dictates its the one without engine heat. </P>


Its been a long week......</P>


</P>


</P>
 
[quote user="TWO GUNS"]


Friendly Advise:</P>


We all know that the Kubota filters are priced like gold. But, best stay with them, know a man who went to the " dark side " with other filters. And lost ALL his performance on his RTV. He got spanked, and will never make that mistake again !!!!!</P>


Thought I'd just throw that in >>></P>


TAKE A PEEK AT THIS THREAD !!!!</P>


http://compacttractorreview.com/cs/forums/thread/10082.aspx</P>


[/quote]</P>


I'd believe the fluid had something to do with it before the filters had any effect. Kubota has someone make the filters for them. But using fluid that might not meet spec will have an effect.</P>
 
Yes, I will always believe the fluid had EVERYTHING to do with it. But I honestly believe, Kubota has therehigh standards of quality, and it will have to be at their high standards for a company to get the contract to make the filters. So in my opinion, if a operator / owner keeps Kubota Filters & Fluids in their machine, and keeps up with his schedule maintance, Everything should run smooth and trouble free !!! Agreed ?</P>


[;)]</P>
 
KT</P>


I never use anything but Kubota fluids and Kubota OEM filters in my three Kubotas. I have never had any problems of any kind and my oldest Kubota is 20 years old. The filters I referred to are OEM filters. I never looked at any other tractor when I bought the last one-105 HP andit isa finetractor as all have been.I wouldn't even guess how many hours the oldest one has on it.</P>


Nick</P>
 
Nick-America,</P>


A close friend of ours owns two Kubota tractors that are popping close to 20-21 years old. He also has only used Kubota fluids & filters. And I have never known him to ANY trouble out of either one of his machines. May I add, these tractors are as good as the day he purchased them. He's has had many folks who have tried to purchase these old Kubotas from him, and he just laughs, tells people they are like one of his kids ...... He loves his old Kubotas !!!!</P>
 
Two Guns</P>


This one was on a pto irrigation pump for years. Run out of fuel, turn the valve on the fuel line 180 degrees, turn over motor 1 minute, turn valve back, starts. Never been too cold to start either without ether. Never an oil leak either.</P>


Nick</P>


</P>
 
It is amazing how dependable these machines are !!!</P>


To bad Kubota don't have pick-uptrucks in production, I would be a proud owner of one .....</P>
 
The RTV's drive is a piece of engineering marvel, the filters and fluids are part of that. On this machine, more than others, it seems to be very important to stick to the OEM filters and Super UDT.
 
You must log in or register to reply here.
Top