Plugs and Caps; JIC or What???

Thanks to those that helped me find some sites for plugs and caps. A part at one auto store that the guy told me is $10 costs less than $2 on one site I was told about. Unbelievable.

I could use some advice/help on what type of fitting I need. I have a lift cylinder on my Allis Chalmers 840 that needs to be taken off for repair. I want to plug and cap the hose connections and don't know what type of plug/cap to buy. I have taken some other hoses off and I am about 99% sure they were all JIC, but is there anyway to be sure without disconnecting and looking? I have a parts manual and repair manual that don't have anything useful on this topic.

Thanks in advance for any help. I appreciate anything I can get.

In answer to your question, NO, there's really no way to tell with 100% certainty what fitting you've got until you get it apart. That said, I've been working on all types of equipment for a long time, and on all of the older equipment the most common fittings are either JIC and/or regular NPT (tapered pipe thread). Years ago Dad gave me a guide to hydraulic fittings that was maybe 4 pages thick. It had things like JIC, NPT, Oring Boss, flange face, and maybe one or two others. The latest book has more like twenty different types of fittings, with most all of them being some engineers different take on a standard design. In other words 30 degree taper vs 60 degree taper, inverted flair vs standard flare, the male taper on the female end vs the male end, and vice-a-versa, a small diameter O- ring vs a larger diameter O-ring, etc, etc.

Like I said, basically the same idea, just some engineer making the design just different enough to get a patent and make money for his company. Because of that it's nearly impossible to tell exactly what fitting you've got until you get it loose....unless it's a machine you've worked on enough before to have an idea before hand what your going to find.....which it sounds like you already do. Good luck.

never heard or something so silly! disconnect the hoses and you will know right away what they are. as you say the cyl. has to come off. and if still unsure take the fitting with you to your napa or where ever. most hyd. fittings are the common jic. post a pic. of the fitting then and we will tell you.

You"re making a mountain out of a molehill. I save hyd hose end caps, and battery terminal caps. Most fit hyd hose ends and pipe/cyl ends. Otherwise, just use a plastic baggie and a wire tie to cap off the end of the hose or cyl.

We have a Gates distributor in town. So, I use Gates hose and fittings. They will give you a Catalog of all the Gates fittings. I just usually need the simple ones. But it is interesting to look at all the different styles and different threads used around the world.

We have a Gates distributor in town. So, I use Gates hose and fittings. They will give you a Catalog of all the Gates fittings. I just usually need the simple ones. But it is interesting to look at all the different styles and different threads used around the world.

Thanks for the response.

I didn't think I threw out that bad of a question to deserve some of the other comments so I wanted to tell you I appreciate the information you gave me. You answered my question and thank you for that.

Have a good day.