Help servicing kubota B20

[kyis]

Borrowed a B20 tractor and want to perform service in trade.
I'm auto mechanic so am just dangerous enough. The engine oil was easy, just not sure where all the hydralic/transmission drain plugs are. I bought 9 gals of kubota udt. It appears to have 2 hydraulic filters. Trans and hyd system I assume. Larger black one hangs horizontal and is very apparent. The other one yellowish in color is kind of hidden and diagonal mounted. Not really sure which is which. Neither has ever been changed, so it seem like its time. About 375 hours on tractor with backhoe and loader.

Any help would be great on the service procedure and location of plugs. Maybe those are plugs on the ends of the tube resivoir?

 

[CCWKen]

The black one is probably the hydraulics filter and the yellow is the HST filter. They can be pricey and hince get their service life stretched beyond limits.

 

[kyis]

Thanks,
Any clue on where all the drain plugs are?

 

[MarkV]

Welcome to the forum. This may be of help. Try TractorSmart.com is your online source for Kubota online parts. for a free download of the parts manual with schematics . Follow the instructions and they will e-mail you the download.

On the B21, replaced the B20 in 1997, there are three drain plugs. One at transmission and one on either side of the rear differential near where the backhoe attaches to the sub frame. I can't say this is exactly like the B20 but I would look for 3 drains total.

By the way 375 hours on a 14 year old machine is really low hours.

MarkV