3 Point Hitch

[WVBill]

I'll know how much hydraulic fluid it holds as soon as I get the manual for it. It is a Kubota B-219 loader.
The Hydraulic reservoir is the right rear vertical member of the loader frame. It's about a 4" X 6" X 3ft metal tube. From near the bottom a hose runs to the pump mounted on the the tractor below and in front of the radiator. The pressure hose runs from the pump to the control valves mounted on the top of the reservoir/vertical member. The returns from the hydraulic cylinders are plumbed to near the top of the reservoir. There is a fill cap on the top of the reservoir near the control valves. There is no method of measuring how full the reservior is and there is no filter in the system that I can see.

Unique, huh? This is about a 1978 vintage tractor. 823.7 hours on the meter but my Father in law (who is the original owner) says that the meter stopped "awhile ago".

It may be "unique" but it's mine and, so far, does all I need it to do. Between getting the manuals and advice from this board, I hope to keep it running another 800 hours!

Bill

 

[hayden]

That's a relief. I had visions of gear oil mixing with hydraulic fluid and all h@#l breaking loose.

 

[Kelvin]

Bill,
Somehow I missed out on some of these posts.

Nonetheless, here are some important notes from my B5100/B6100/B7100 operator's manual section 7.3 "Transmission Oil" (page 19). I have left most of the bad grammar intact...

"Use hydrostatic transmission fluid.

KUBOTA UDT oil is now used for the transmission of this tractor. Whenever replenish or replace, use only multi-purpose oil shown below or equivalents.
KUBOTA UDT Hydrostatic transmission oil
SHELL DONAX-TD, DONAX-TM
MOBIL Mobil FLuid 350
EXXON Torque Fluid 56

Do not mix up the other nature of oil other than aboves. When it is necessary to use SAE No. 80 gear oil by some reasons, you must drain oil off completely.

Capacity:

B5100D/B5100E 8.5L (9.0 US Quarts)
B6100D/B6100E/B7100D 11.5L (12.2 US Quarts)

The oil in the transmission is also used for the hydraulic drive system."

I have always used hydrostatic fluid in my B7100D; it sounds like you should too in your B6100D. It sounds like you should avoid the 80 weight gear oil.

As usual, I hope this helps,
Kelvin

 

[WVBill]

Thanks, Kelvin

I'm almost positive my Kubota B5100/B6100/B7100 Owner's Manual does not have the paragraph you quote. Mine is the original Owner's Manual that came with the tractor.

I don't think that the HSE/HSD version of these tractors had come out yet when my B6100DT was new. Is there any mention in your manual of using different Transmission Oil depending on the type of transmission?

So here's the question. If your manual and mine says that it is OK to use SAE 80 Gear oil in a Gear type transmission, that's what I have so I'm safe. But, if your manual recommends Kubota UDT hydraulic fluid in a gear transmission, maybe I should switch.

I don't know anything about oils but it would seem to me that there's a fundamental difference between Hydraulic fluid and gear oil. One's main purpose is to transmit pressure and the other's is to lubricate.

Thoughts?

Bill

 

[Kelvin]

Re: 3 Point Hitch *DELETED*

Post deleted by Kelvin

 

[Bird]

Kelvin, if you ever compare UDT and SAE80W oil, you'll notice the difference right away; about like the difference between maple syrup and honey./w3tcompact/icons/smile.gif

Bird

 

[Kelvin]

Bird,
Thanks.
I noticed that Bill moved the post to a new topic so I deleted my post and moved it over there also. In the process I deleted the paragraph questioning the difference between 80 weight oil and UDT.

Kelvin