JIC fitting size?

[myyaz33]

Hopefully a cross post is ok as the TYM forum does not get a lot of traffic and this is more of a hydraulic specific question than TYM specific. I am trying to determind the size of JIC fitting on the LT200 loader on my TYM T273. The following link goes to the TYM post I made earlier and has a couple pictures of the fitting. Hoping someone can tell me how to identify the size properly.


http://www.tractorbynet.com/forums/tym-owning-operating/356933-lt200-loader-jic-fitting-size.html

 

[BukitCase]

You'll need something a bit more accurate than a tape measure - also, occasionally you'll find fittings that have slightly different sized hex females but the male threads are standard - first thing is to download this

http://www.discounthydraulichose.com/v/vspfiles/downloadables/thread_guide.pdf

In it, you'll find JIC - BUT you'll ALSO find JIS fittings a few pages further along - they look identical to JIC but have slightly different thread diameters and pitches, and are NOT interchangeable with JIC fittings.

The GOOD news - if you don't already have one, a cheapie digital caliper from HF or similar will be plenty accurate to make sure your TYM did or did NOT use the JIC connectors - I heard that some Kubotas use the JIS and others use JIC's so it's easy to get confused.

The trick is to measure across the male threads of the fitting (usually you don't even need to open the connection to get at them) - then compare to the chart above - you'll know right away which type you have, and hopefully they're JIC. The JIS fittings are not NEARLY as available in most places.

HTH... Steve

 

[LD1]

Agree, get a caliper.

5/16 is a pretty uncommon size too

 

[myyaz33]

The other good news is that I already have a caliper so now armed with the knowledge, I can find the right size the first time. Thanks all. I will share my results when I get a chance to get back out to the shop.

 

[SPYDERLK]

Agree, get a caliper.

5/16 is a pretty uncommon size too

Looks like a JIC 4 from the ruler pics in other thread. That would be 1/4.

 

[UniversalHosman]

Like it was said before, it ain't easy trying to measure hydraulics with a tape measure. There are a couple of ways to try to determine size. First look for markings on the hose - for example a 100R16-04 - the 100R16 is the type of hose, the 04 is the size of the hose. I'm sure you've noticed - manufacturers like to put lots of markings on their stuff. Trouble is most of it means nothing to us. So the markings might be different but there should be a telltale "dash size" someplace... IF the markings are not worn off .

Second, look on the fitting itself. Any markings anywhere may help ID the fitting. Look on the nut and on the ferrule. (Note: on two-piece fittings, markings on the ferrule are generally useless) These are usually stamped in. Sometimes they are stamped in well, often the stampings are light and easily covered with grease or grime.

Often the hose and the fitting are the same dash size - such as a 1/2" hose matched with a 1/2" fitting. However it is fairly common to see a fitting markedly larger or smaller than the hose... say a 3/8" fitting on a 1/2" hose or a 5/8" fitting on a 1/2" hose. In most cases you can usually spot this difference by visually inspecting the hose and fitting. This won't help you to actually "size" either one but if you can determine either the hose size or the fitting size it may help you make an educated guess about the other.

Andy

 

[LD1]

Hard to tell using a tape.

I actually thought it looked like the male threads where ~9/16 wide based on the tape, thus making it a -6 (3/8).

But not point in speculating if he has calipers, and the link that Bukitcase posted

 

[LD1]

Like it was said before, it ain't easy trying to measure hydraulics with a tape measure. There are a couple of ways to try to determine size. First look for markings on the hose - for example a 100R16-04 - the 100R16 is the type of hose, the 04 is the size of the hose. I'm sure you've noticed - manufacturers like to put lots of markings on their stuff. Trouble is most of it means nothing to us. So the markings might be different but there should be a telltale "dash size" someplace... IF the markings are not worn off .

Second, look on the fitting itself. Any markings anywhere may help ID the fitting. Look on the nut and on the ferrule. (Note: on two-piece fittings, markings on the ferrule are generally useless) These are usually stamped in. Sometimes they are stamped in well, often the stampings are light and easily covered with grease or grime.

Often the hose and the fitting are the same dash size - such as a 1/2" hose matched with a 1/2" fitting. However it is fairly common to see a fitting markedly larger or smaller than the hose... say a 3/8" fitting on a 1/2" hose or a 5/8" fitting on a 1/2" hose. In most cases you can usually spot this difference by visually inspecting the hose and fitting. This won't help you to actually "size" either one but if you can determine either the hose size or the fitting size it may help you make an educated guess about the other.

Andy

I wouldnt even attempt an educated guess on fitting size based on hose size.

It seems fairly common (at least on my equipment) that the fittings get upsized by 1. Not so common in the industrial places I have worked.

My backhoe is full of 3/4 hoses and 7/8 fittings.
Dads backhoe is 5/8 hoses and 3/4 fittings.
His international loader is 1/2 hose with 5/8 fittings
My kubota loader has 3/8 hoses with 1/2 fittings

I work with hydraulics about every day. I cannot tell the difference between a 7/8 fitting on 3/4 hose vs a 3/4 fitting on 3/4 hose by just simply looking. I still measure to confirm. So I wouldnt even try to think someone with less hydraulic experience be expected to get it right.

 

[myyaz33]

JIC-4 1/4 it was. Just got done measuring with caliper. Order has been placed to get my grapple hydraulics going.

Thank you all for the quick help.

Here is the grapple thread. I plan to get some more pictures loaded from the work that already took place as well as the hydraulic plumbing.
http://www.tractorbynet.com/forums/welding/346463-what-build-72ft-6-wide.html

 

[SPYDERLK]

Hard to tell using a tape.

I actually thought it looked like the male threads where ~9/16 wide based on the tape, thus making it a -6 (3/8).

But not point in speculating if he has calipers, and the link that Bukitcase posted

Yep. ...I thought so too at first looking at the 4th pic, but the 3rd pic shows a better line up and from that one its definitely not 9/16.