So I have a new controller for my front end loader a yanmar 336d . called my local yanmar dealer looking for replacement o' rings for the fittings on my old controller .was going to use them on the new one . bought the new controller from hoye. it lists the ports as in/out ports sae #8 o'ring and the same for the work ports . the fittings from valve to jic #6 to loader lift and curl hoses. and fitting from valve to jic #8 inlet and outlet fittings . well this is the third time I have called about parts with no response back . really they just must be that busy. I will just use some sort of sealant if o' rings are bad and hope for the best Monday I will try to find them on line . do you all think o' rings will be ok or just wasting my time . winters coming fast and need tractor for plowing out my camp. thank you bob .v. :confused2::confused2::confused2:
o'rings
- Thread starter robert j
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HoyeTractor
Gold Member, Approved Advertiser
I guess I am not sure what you are looking for. You are looking for the orings for the #8 fittings? Any local industrial supply place should have those. I would not use sealant in place of the oring. Are you saying you have called us 3 times with no return call or your local Yanmar dealer?
HoyeTractor
Gold Member, Approved Advertiser
As long as you don't get something special like air conditioning o-rings they should be just fine for what you are doing as long as you get the right size. The hyd fitting o-rings are usually a slightly harder rubber but I've always just used regular orings on my hydraulic fittings and have never had a problem.
TX mower
Bronze Member
Just FYI if you don't have a convenient local supplier, these folks usually ship very quickly, priority mail for small stuff .... Page with SAE ORB fitting O-rings (the fitting on 99% of FEL valves bodies).
Buna is good for down to -25*F if you live in a very cold climate, Viton is rated for higher temps rarely if ever seen with ag hydraulics but tends to get hard and (relatively) brittle below -5*F (I'd stick with Buna).
As mentioned, you definitely don't want to use some sort of sealant-hack in this application - a pinhole spray of hydraulic fluid under pressure is often difficult to see and a very dangerous thing that easily cuts clothing and skin doing great harm.
Buna is good for down to -25*F if you live in a very cold climate, Viton is rated for higher temps rarely if ever seen with ag hydraulics but tends to get hard and (relatively) brittle below -5*F (I'd stick with Buna).
As mentioned, you definitely don't want to use some sort of sealant-hack in this application - a pinhole spray of hydraulic fluid under pressure is often difficult to see and a very dangerous thing that easily cuts clothing and skin doing great harm.
TractorGuy
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If it wasn't leaking they will probably be okay to reuse. I bought all three assortments (metric, SAE, and AC) from Harbor Freight and usually find one that will fit. I'm not opposed to using AC o-rings if they fit proud in the groove.
clemsonfor
Super Member
Many of these O rings in various places on these tractors are Japanese spec O rings...not even metric but a special size. Several I have had to get from Hoye cause I could not source any local even at big industrial parts houses.
I have pitched the idea to Hoye about making up an oring kit to sell. Something with all the common ones in there. Since I have their ear again with this post I will bring it up again!! Aaron, I know I would buy one if it was availible, the next order I had, nothing worse than not having one when you need it and your part guy is a 3 or 4 day delivery away!!!
I have pitched the idea to Hoye about making up an oring kit to sell. Something with all the common ones in there. Since I have their ear again with this post I will bring it up again!! Aaron, I know I would buy one if it was availible, the next order I had, nothing worse than not having one when you need it and your part guy is a 3 or 4 day delivery away!!!
RickB
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clemsonfor
Super Member
You are correct! And no I am not confusing the issue other than for folks not following well. I know exactly what he needs and there talking about. But I am useing this thread and the fact that aaron has posted here to pitch my idea of a Yanmar specific O ring kit. But thank you for clarifying it for folks who may not be clear on the subject.
rScotty
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An O ring kit is an interesting idea, but luckily it is also easy to order online. Where did you get the idea about special unique O rings? I find it hard to believe that anyone would deliberately design something to use a unique O ring instead of simply changing the part dimension.
rScotty
McMaster-Carr
I completely agree with clemsonfor about the unique O-rings. I have run into that several times on the Yanmars. I have both an sae and metic o-ring kit from Harbor freight and more than once there was nothing in either kit that would fit the Yanmar. The Japanese specs are definitely unique.
HoyeTractor
Gold Member, Approved Advertiser
I have worked on an oring kit a couple times over the years. The problem always ends up deciding what all to include. When you are talking about a normal o-ring that costs $0.05 it is easy to just throw in anything and everything that might possibly be needed. Yanmar uses mostly JIS (Japanese Industrial Standard) orings which are more difficult to find in the US and are more expensive. Some of those o-rings cost me over $1ea and that can make an o-ring kit get expensive pretty quickly.
rScotty's link does have a kit that 'meets JIS standards' so that might be interesting to see how many of them match the orings Yanmar uses. The kit is fairly inexpensive. I might buy one just to check out.
EDIT: I just looked through my top 10 best selling o-rings and the kit only had two of the sizes. It might still be worth having but looks like it will still be missing a lot of the common Yanmar sizes.
rScotty's link does have a kit that 'meets JIS standards' so that might be interesting to see how many of them match the orings Yanmar uses. The kit is fairly inexpensive. I might buy one just to check out.
EDIT: I just looked through my top 10 best selling o-rings and the kit only had two of the sizes. It might still be worth having but looks like it will still be missing a lot of the common Yanmar sizes.
duanew1
Silver Member
If you look into an o-ring size chart then you will realize that the harbor freight kits are a fraction of the available o-ring sizes.
clemsonfor
Super Member
there Japanese spec, not just simple metric on many spots. I put new o rings on the lift arms where they always weep. I looked all over, in my kits SAE and metric, my loggers and even a big parts house for industrial supplies..similar to a grainger but more local. No luck except random places online even knowing size. I just ordered from hoye and waited the 3 days. If you worked on stuff you know what i am talking about. All my loggers have kits for their equipment. Like Tigercat has a kit for all the common o rings on the machine and John Deere also has the same thing for the forestry equipment. They don't have to pull out all sorts or random kits to get the oring for the o ring on the hose to the grapple boom for example its in the JD kit or whatever.
HoyeTractor
Gold Member, Approved Advertiser
Very true! We STOCK about 150 different Yanmar o-ring part numbers right now. I just did a quick report and Yanmar lists about 500 o-ring part numbers in their catalog. Some of those in the Yanmar catalog probably interchange but still...
clemsonfor
Super Member
That is good info, thanks Aaron. I see your point about the kit becoming expensive when you throw in 4 each or random sizes at $1 each. HOw are these things that expensive for you even if they are rare here? i would imagine many are made in china...i would think you could order a lot of 300 of them or whatever and the price would get way down? I am not in purchasing for a company so i do not have these connections nor know what is involved with import fees etc and the hassle with customs if your buying hundreds of dollars of stuff like that but i would think that you do this with other parts? I am hung up on the $1 your price for an o ring thing, that seems like robbery???
I hate to think this wont happen. BUt i guess we just live with the current system, wait till we need it and order from you, and just suck it up if we need it faster. Its not worth driving all over to me just to visit 3 or 4 places and not find it and in 2 of them they look at you like your crazy when you say its not a metric just jap Industrial standard size.
Oh and don't think those JD or Tigercat kits come cheap!! haha
HoyeTractor
Gold Member, Approved Advertiser
That is absolutely true but, with some of those o-rings, 300pc would last me 57 years and the rubber (and me) would have turned to dust by the time the last one was sold. :laughing:
Coda1
New member
Precision Associates is a manufacture of orings. They have a huge selection of orings and there catalog mentions JIS orings. I've used them at work many time but I don't know if they sell directly to the public. https://catalog.precisionassoc.com/Asset/PAI%20Catalog.pdf
TX mower
Bronze Member
Neat catalog but clearly not oriented to small quantity consumer sales: https://www.precisionassoc.com/selling-terms/
"Order and Line Minimums
Invoice minimum is $40.00 exclusive of freight charges
Line minimum is $10 for stock parts, $40 for items that have to be manufactured."
