Leftover hydraulic lines with banjo fittings?

[tomrscott]

I assume that Yanmars use the same hydraulic lines that Yanmar-built John Deere's use. I have discovered that these banjo fittings are almost impossible to find, so I am looking for someone with excess lines they are willing to part with. Maybe you installed a power beyond kit, or made some other mods that left you with some left over lines. I want to unbraze them and braze them to new lines. Yes I can buy these lines from JD, but the cost ends up being about $40 per connector for the shortest line.

Rather than repost the illustrations I've posted over in the JD forum, here are some links:

Here is the type of fitting I am looking for:
http://www.tractorbynet.com/forumfiles/601766-JD%20banjo2.JPG

This is the line installed:
http://www.tractorbynet.com/forumfiles/602785-Banjo%20Fittings.jpg

And these are the hollow bolts they use, 3/4" x 16tpi
http://www.tractorbynet.com/forumfiles/602791-BanjoBolt2LS.jpg

Please private message me if you have something you are willing to part with. I will happily pay something for them.

Thanks!

/forums/images/graemlins/smirk.gif

 

[tomrscott]

So let me try a different approach.

Can anyone tell me if any Yanmar model uses banjo fittings like those described above?

If I could get a Yanmar model number that applies, I might be able to contact Yanmar directly, but the first thing they ask is what model number I have, and I don't know which model might use the banjo fittings.

Again, needs to have 3/4" (19mm) hole, and fit 1/2" OD (13mm) tube.

Thanks! /forums/images/graemlins/smirk.gif

 

[normde2001]

I can't answer your question, but I am sure that Yanmar will not deal directly with you. I suspect you may have a pricing problem with those "hard to find" parts. If I were you I would email any/all of the Yanmar dealers and ask about availability and price.

 

[PoconoMan]

Here's a few sites which may have what you need, or may have somthing you can make work. I always bookmark sites like these cause ya never know when you'll need something you can't find locally. Good luck.

PM

web page

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web page

web page

web page

 

[tomrscott]

Yes, I agree that Yanmar won't deal directly, but it would still help to have a Yanmar model number that uses these parts.

 

[tomrscott]

PoconoMan,

Thanks for all the links!

Most of these only have the common 10mm and 12mm which are used in brake systems. None had anything that was a perfect match to the 19mm I really need, but the Summers Rubber Co. link had rubber hose barbed fittings in 18mm and 22mm sizes that might have enough boss on the side to be drilled out for the 1/2" OD tubing to be brazed in. Then the question becomes can you get enough flow through an 18mm if you drill it out 1mm more, or is there some way to use a 22mm even though it is 3mm too large? I will measure the 19mm copper washers tonight and see how much meat they'd have if they were sitting on a 22mm hole. Once you crushed it down it would become a sort of shoulder washer and tend to keep things pretty well centered, but I just don't know if there is enough OD on a 3/4" shoulder washer or not. I am guessing it will be about 25mm, and might just be enough.

The one thing I did find interesting there is the "double banjo bolt." It allows stacking two banjo fittings on one port. If I have enough vertical clearance on the return to tank port, that would be a GREAT way to TEE in the extra return to tank line! No TEE required, just a longer banjo bolt, and that could be easily fabricated from a fine pitch 3/4x16 bolt 2" long! I just don't know if there is enough clearance in there or not, but I am sure going to look tonight. Return to tank is low pressure anyway so it shouldn't be real critical.

Hummm... /forums/images/graemlins/smirk.gif

 

[JerryG]

<font color="blue"> 3/4x16 bolt 2" </font>
If that is the size, any machine could make you one from a grade 8 bolt. It would be a very inexpensive fix. BTW, are you sure that it is not metric? I know the loaders are SAE, but I thought that the fittings on the tractor side would be British or regular Metric. That would be great for you if it is a 3/4".

 

[tomrscott]

JerryG,

I've known for some time that the threads were 3/4x16 straight threads, (SAE-8). The revelation I had today was that with a longer hollow bolt, you could stack two banjos, one on top of the other, to TEE a second return to tank hydraulic line.

Unfortunately, looking at the tractor tonight, I don't think there is enough vertical clearance to stack a second banjo and longer bolt. They would fit once the bolt was tightened, but I don't think there's any extra room to start the bolt from. Still stacking banjos is a very interesting possibility.

I also thought it was rather odd that the Yanmar John Deeres have SAE ports and threads. I was fully prepared for it to be metric. As it happens, that might have been easier to get parts for. I have found a couple of places that had 18mm and now 22mm metric hose-end banjos. I guess SAE standards must have been a JD requirement to Yanmar.

I am actually considering using a 22mm hose-barb banjo by cutting off the hose barb and drilling the boss out to fir 1/2" OD tubing and braze it on. The 3/4" copper washer OD is almost 27mm, so there would be a fair amount of shoulder over the 22mm bore. I was thinking that if I take a 19mm copper washer, and peen the inside edge over the 22mm bore to keep it centered. Seems like it would work pretty well. Then once the copper washer was socked down, it would form a shoulder and stay centered. I'm thinking it should work fine. It would actually allow a bit of extra flow capacity.

/forums/images/graemlins/ooo.gif

 

[PoconoMan]

I just had a thought, would a 90 degree elbow work with a union on the backside to the line instead of the banjo setup? Just a thought. /forums/images/graemlins/wink.gif

PM

 

[tomrscott]

Well, if you mean a union into the port, it could work in a couple ports, but in one there isn't the height.

I am really thinking that 22mm banjo hose barb fitting might be the ticket. I'm going to call tomorrow and ask for some dimensions on the barb boss. There's one that is 5/16" ID hose to 22mm banjo, and another that is 1/2" ID hose to 22mm banjo. I'm sure the one for half inch ID hose, would have enough room to be bored out for 1/2" tubing, but the 5/16" hose fitting might actually be a better fit. Hopefully they don't want $40 each! /forums/images/graemlins/ooo.gif