Kubota O Rings

[boffo]

I have a GR2120 and live on an isolated island.
I need a few o rings and I know there must be a code. All orings seem to start with 04816 and then have a number that gives the cross section diameter and inside or outside diameter ie 00260; 00180; 00160 etc.
Does nayone know what the code is for the size of o ring?

 

[MapleLeafFarmer]

maybe listed in the workshop manual?
I didn't search as dont know exact which ones you be looking for.
let me see if I can find a WSM for you.

found an EU version in english here:

https://www.kubota.cz/data/soubor/WSM_GR2120EU_EN.pdf

edit: o-ring mentioned 59 times in the WSM and only sizing listed is small and large? here is only size relative I could find other than that from the WSM

 

[fried1765]

I have a GR2120 and live on an isolated island.
I need a few o rings and I know there must be a code. All orings seem to start with 04816 and then have a number that gives the cross section diameter and inside or outside diameter ie 00260; 00180; 00160 etc.
Does nayone know what the code is for the size of o ring?

You live in a beautiful place!
Been to Lajes many times....many years ago.

 

[trevoroni]

I'd guess the numbers after the 04816 is the "dash" size of the O-ring. So a 04816-00260 would be a 2-260 O-ring.
It could also be the JIS number since it may be Metric.
I've attached reference sheets that lists O-Rings numbers and their actual size dimensions for the O-rings that you can check this theory.

 

[TheOldHokie]

I'd guess the numbers after the 04816 is the "dash" size of the O-ring. So a 04816-00260 would be a 2-260 O-ring.
It could also be the JIS number since it may be Metric.
I've attached reference sheets that lists O-Rings numbers and their actual size dimensions for the O-rings that you can check this theory.

I think thats unlikely for several reasons. For starters a -260 oring is 6.5" in diameter....

Dan

 

[trevoroni]

Good catch Dan. I didn't realize the piece of equipment he is working on is a lawn tractor.
Maybe a 2-026?
Or there's a good chance they are Metric ones so maybe a JIS B2401 P26?

 

[TheOldHokie]

Good catch Dan. I didn't realize the piece of equipment he is working on is a lawn tractor.
Maybe a 2-026?
Or there's a good chance they are Metric ones so maybe a JIS B2401 P26?

I would be pretty confident they are metric. Less confident that a Kubota part number had any meaning in that regard.

WSM is indicating BSPP (G thread) oring fittings (PFxx) so those should be easy to figure out.

Dan

 

[trevoroni]

I don't think those hydraulic fitting O-Rings are the ones he is looking for.
It looks like maybe one for the oil pickup tube and for the control valve?
The part numbers for bearings in the Kubota parts books the last part is the actual bearing number from what I've seen so it might be similar for the O-rings?
GR2100 Parts Manual

 

[North Idaho Wolfman]

All Kubota Tractor O-rings are metric.
Equipment can vary per location on manufacture.
And as far as I've ever been able to tell there isn't a single instance where a Kubota part numbers correlates to any size.