Break tire bead by lowering deuce on tire?

[tie6044]

Tractors is right, if it's an A3 there is probably an internal beadlock so you really aren't separating the tire from the rim you are actually separating the rim half from the tire. Driving on it could wreck the beadlock. I bought a duckbill hammer and it was the best investment I made for tire changing.

 

[clinto]

I agree with all that I'd be fearful of compromising the sidewall by not doing it right.

 

[Rustygears]

Hey folks - the guy used the magic word "grommet". This is a tubeless A3 tire with external bead lock, o ring and internal spreader. It's not a standard Truck rim like that used on an A2. Special technique is required and dropping a 14000 pound truck on a rim is about the most uncontrolled and neanderthal process I've ever heard mentioned. 3 simple words of advice: DONT DO IT!

Search the posts. There is a straightforward and elegant technique using an engine hoist. It's controlled and safe (er). That rim is a bitch to split and a strong back and meat fists won't work. RTFM. The posted document has been tried by many and works. I have 7 successes in a row for both dismounts and mounts using the engine hoist. The guy who originally posted it (not me, I just edited it for clarity) was a genius pure and simple. The money you save on ICU costs can buy another truck for your collection.

High lift jack for A3 bead? NFW.

 

[1 Patriot-of-many]

Hey folks - the guy used the magic word "grommet". This is a tubeless A3 tire with external bead lock, o ring and internal spreader. It's not a standard Truck rim like that used on an A2. Special technique is required and dropping a 14000 pound truck on a rim is about the most uncontrolled and neanderthal process I've ever heard mentioned. 3 simple words of advice: DONT DO IT!

Search the posts. There is a straightforward and elegant technique using an engine hoist. It's controlled and safe (er). That rim is a bitch to split and a strong back and meat fists won't work. RTFM. The posted document has been tried by many and works. I have 7 successes in a row for both dismounts and mounts using the engine hoist. The guy who originally posted it (not me, I just edited it for clarity) was a genius pure and simple. The money you save on ICU costs can buy another truck for your collection.

High lift jack for A3 bead? NFW.

One of the tools I don't have. Of course. Well I took it back to the shop for a redo, they told me the first time they did it they wirebrushed it, had lots of RTV sealant in the groove. Guess Army mechanics try the same stuff some of us do..... Got another new oring yesterday, will head over there Monday to "supervise" as they don't want to touch the wheel valve and plumbing. (I've taken them to the shop without wheel valve ect before)

 

[Rustygears]

Make sure that the grommet was installed with lots of silglyde cream applied. If not, it may not seat properly and will degrade faster. Same goes for the o ring. No RTV or anything else but silglyde rubber lubricant on the o rings & grommets. Also, make sure the rim surfaces for both the o ring and grommet are spotless. The grommet must be torqued per the TM. I think I recall 60 ftlbs, but don't quote me on that. Anything less will leak after mounting.

Harbor Freight has a cheap but very effective 2 ton engine hoist that folds up. That, a 3/4 air impact, a breaker bar with obligatory 6 foot pipe cheater and a gallon of tire mount lube makes the process of dismount and mount a reasonable 1 man job. New tires, grommets and o rings = no leaks on my A3.

Here's the link to the procedure and all the details on how to treat the parts:
http://www.steelsoldiers.com/deuce/73238-a3-tire-change-procedure-1.html. It's post #5 on the page.

 

[1 Patriot-of-many]

Make sure that the grommet was installed with lots of silglyde cream applied. If not, it may not seat properly and will degrade faster. Same goes for the o ring. No RTV or anything else but silglyde rubber lubricant on the o rings & grommets. Also, make sure the rim surfaces for both the o ring and grommet are spotless. The grommet must be torqued per the TM. I think I recall 60 ftlbs, but don't quote me on that. Anything less will leak after mounting.

Harbor Freight has a cheap but very effective 2 ton engine hoist that folds up. That, a 3/4 air impact, a breaker bar with obligatory 6 foot pipe cheater and a gallon of tire mount lube makes the process of dismount and mount a reasonable 1 man job. New tires, grommets and o rings = no leaks on my A3.

Here's the link to the procedure and all the details on how to treat the parts:
http://www.steelsoldiers.com/deuce/73238-a3-tire-change-procedure-1.html. It's post #5 on the page.

Saw that before, good method!

Grommet is fine, oring is leaking. I'm guessing you replied by phone, Silicone was intended as lubricant for the oring? Have the rest of the tools, no problems dismounting, just getting this one tire leak taken care of. They took care of one of two on the first try, been holding air for month or more, this one is being a pain.
Will update on Monday, I'll be there in person. Engine hoist in the near future.