Manual tire changer help

[franklin2]

I inherited with a house I bought this manual tire changer. I have never used one before.



After a few trials, I have it down, this thing works great. Except putting the tire back on, that is a problem I haven't figured out yet. It came with a bar, and I finally figured out this end is for taking the tire off. It works beautifully once you figure it out.



This other end is for putting the tire back on the rim. This is where the problems start. My bar originally looked like the one below in the picture, with the curvature of the tool at "A".



I figured the "hook" of the tool went around the lip of the rim, and then it along with the wheel would push the tire back down over the rim. It works till the going gets tough, and then it would rather slide up off the rim rather that push the tire over the edge of the rim. I thought the hook must have been bent at one time, so I decided to bend it around to position "B". I put it in my press and bent it to the new position. It helped it, but it still wants to slide up off the rim. If I go over and hold down on it with my hand, I then can't get enough leverage on the tool to push it around the rim at the same time.

I was thinking about heating the tool and bending it at "C" but thought I had better stop before I really mess it up. Does anyone have a setup and a bar like this? It's a old Coates 3S tireman changer. If I can get this part working, it will be really slick and work on everything except aluminum rims. I got the above picture off the internet, and that is when I found that picture looks like mine before I bent it around. So I might have to bend it back out if someone helps me figure out what I am doing wrong.

 

[M5farms]

are you pushing the tire down on the side opposite of where your working to the middle of the rim so it has enough clearance to slide on. Also use a little soap or grease on the rim and bead . with it slick you can push tire on bottom and top side will slide on once you give it relief

 

[George2615]

I had the same tire machine except the base had 4 bolt down legs instead of a round base. Mine came with a 3' tire bar similar to yours. The flat side (pic 2) is used to remove the tire. vertically hook the tire bead and pull the bar down so the bead is above the rim and walk it around to remove.
The hook side (pic 3) is used to install the tire. Yours looks to have a roller the bead rides on, mine the bead slid on the top. Hook your bar over the rim, lube the tire bead, push down the side of the tire behind your roller so it is under the rim lip then walk the tire iron around. the tire bead should roll on the roller and drop below the rim lip as you walk around.

I now have a commercial air operated tire machine and got rid of my manual changer years ago but I kept the bar.
I use plenty of lube both to remove or install tires.
You should not need to heat and bend the bar. Its designed to work as is.

 

[Redneck in training]

HF Tire Changer - YouTube

 

[sd455dan]

I inherited with a house I bought this manual tire changer. I have never used one before.



After a few trials, I have it down, this thing works great. Except putting the tire back on, that is a problem I haven't figured out yet. It came with a bar, and I finally figured out this end is for taking the tire off. It works beautifully once you figure it out.



This other end is for putting the tire back on the rim. This is where the problems start. My bar originally looked like the one below in the picture, with the curvature of the tool at "A".



I figured the "hook" of the tool went around the lip of the rim, and then it along with the wheel would push the tire back down over the rim. It works till the going gets tough, and then it would rather slide up off the rim rather that push the tire over the edge of the rim. I thought the hook must have been bent at one time, so I decided to bend it around to position "B". I put it in my press and bent it to the new position. It helped it, but it still wants to slide up off the rim. If I go over and hold down on it with my hand, I then can't get enough leverage on the tool to push it around the rim at the same time.

I was thinking about heating the tool and bending it at "C" but thought I had better stop before I really mess it up. Does anyone have a setup and a bar like this? It's a old Coates 3S tireman changer. If I can get this part working, it will be really slick and work on everything except aluminum rims. I got the above picture off the internet, and that is when I found that picture looks like mine before I bent it around. So I might have to bend it back out if someone helps me figure out what I am doing wrong.

I have that same bar - was standard with my Coats tireman - Will try and get a picture-

also do you have the rim on the machine with the recessed side of the rim up? trying to re-mount with the wide flat side of the rim will make it Very hard to get the bead over the rim due to the bead being stretched much tighter

ok here's a couple of the end and the Coats twin air itself

 

[franklin2]

About the recessed part of the rim being up, yes I found that out the hard way.

Do you put that hook over the edge of the rim like the picture below? If you do, how do you keep the hook down around the rim instead of just riding up and off the rim when it hits the tire. It starts doing it when the tire starts getting tight.

 

[sd455dan]

About the recessed part of the rim being up, yes I found that out the hard way.

Do you put that hook over the edge of the rim like the picture below? If you do, how do you keep the hook down around the rim instead of just riding up and off the rim when it hits the tire. It starts doing it when the tire starts getting tight.

Yes over the rim, Once you get it started (do need to Push down on the tire) then and this has happened to me on some of the very stiff sidewall tires (10 plys) .

I use a regular big tire mounting iron or 2 to finish prying the bead over the rim if the factory bar slips off.

Most times it will work without involving any other tools, i also sometimes put a big cheater tube over the end of the bar for more lever effect.

One other thing these old tire machines are useless unless mounted down very securely.

I have 4 concrete expanding anchors on mine to keep it from moving. As has been said before lots of lube can make a huge difference to.


Good Luck - they are very handy machines to have

 

[franklin2]

I talked with a guy that works in our garage today, and he told me it's very important to push down on the tire with your hand as you are working the tool around the rim. I will have to try that, it was mentioned in the previous post also.

 

[Sprinklerman]

A spray bottle with soapy water does wonders

 

[The Fred]

I used the same machine for 10 years as a kid changing tires at my dad's shop until we bought an air operated model in the early 80s.

I was hoping never to see one again it brings back bad memories:laughing:

Regards, Fred