Newbie Tire Change Help

[cg25713]

I just took apart the wheel and here are some pics.

Bolts backed off. Alignment holes. O-Ring in grove. O-ring came out when I took off the top so could not see any issues. Closeup of O-ring at run flat valve cut out. Last is bottom of outside half of wheel.

 

[cg25713]

Doc - I'll try those two as well. Thank you.

 

[TOBASH]

I don't know if you did anything wrong per se.

Place ring in freezer, hold in place to lower half with some rubber cement or silicon adhesive and tighten bolts slowly, opposite bolts 2 at a time.

Best,

T

 

[cg25713]

I just took apart the wheel and here are some pics. Does anything look wrong? Bolts are 1/2"-20 btw.


Bolts backed off.


Alignment holes.


O-ring put back in place. It moved while removing outside half of wheel so I could not see any issues.


Closeup of O-ring at valve cut out on run flat.


Bottom of outside half of wheel.

 

[TOBASH]

You should read old posts to this and other H1 and HMMWV forums like G503.

Seating the "O" rings is sometimes frustrating.

 

[cg25713]

Thanks Doc. I feel like I read everything on tire changes on the internet including on G503. I researched it for a week and now likely have 10+ hours of my own labor into one tire change. It seems the wheels were just not designed to replace the tire - especially in the field.

Without people like you, Action and all the others that helped me - I'd be lost. As an aside - I'm sure with this photo alone I have graduated from newbie status. Most difficult thing I've attempted in a while. Took several hours. Look what you got me into.

 

[TOBASH]

Assuming you’re not too far away, I am happy to go visit you and try to help this weekend. I’m in Brooklyn. I will of course need you to PM an address and tele number.

Let’s remember that since 2017 tons of people here helped and still help me and each other. Just pass it forward my friend.

 

[TOBASH]

I just spoke to the original poster.

He has been trying to fit the tire however has not been supporting the inner rim on top of a 5 gallon bucket or any type of support structure so he has been fighting the tire and he has been fighting the beadlock. When the tire sits on the ground, the tire rubber elasticity pushes the inner rim apart from the outer rim and makes setting the O-ring that much more difficult.

It is my suggestion that the inner half of the rim be supported on top of a 5 gallon bucket. Then the tire with the runflat gets placed over this, so that gravity pulls the tire down and out of the way of the outer half of the rim. Then he can tighten the bolts down to finger tightness and then use to ratchets to tighten bolts that are 180° apart, then 90° apart from that, and so on.

 

[cg25713]

Here is what the above suggestion looks like. It seems promising but I'm not sure it will keep the wheel still as the bolts go lower. FYI - these bolts only turn 1 or 2 times by hand, even with fully greased thread. I will let you all know how it goes.

 

[Mogman]

The last set of rims I did were 24 bolt, I purchased a full set of new grade 8 flanged locking nuts and 24 grade 8 flanged non locking nuts, I was installing new tires and bead locks, no run flats, I would just run all the non locking nuts down a little at a time with a rotating cross pattern, it was much too tight to use just 2 nuts, would have distorted the rim for sure, did 5 of them this way with no glue or silicone, after I got the nuts tight I tested the rim for leaks then blew them down and replaced all the nuts in two passes with the new locking nuts, replacing every other one each pass and torquing them down, had no issues with any of them and about 4 months later they are all within 3-4 lb of each other

 

[Action]

Here is what the above suggestion looks like. It seems promising but I'm not sure it will keep the wheel still as the bolts go lower. FYI - these bolts only turn 1 or 2 times by hand, even with fully greased thread. I will let you all know how it goes.

why are you greasing the studs? Dont freeze your o-ring (in pic). Freezing will shrink it. Snd, is it just me or does that o-ring look thin?

 

[Action]

It looks like you are installing the nuts with an impact gun. If you do that on the first bolts, you may be shaking the o-ring around. I do 24-bolters with a 1/2” drive ratchet and a short breaker bar.

 

[TOBASH]

why are you greasing the studs? Dont freeze your o-ring (in pic). Freezing will shrink it. Snd, is it just me or does that o-ring look thin?

Several posts on G503 and elsewhere talk about freezing the “O” rings as they stay in place better my friend.

 

[Action]

Several posts on G503 and elsewhere talk about freezing the “O” rings as they stay in place better my friend.

i froze mine last 2 because they were slighly bigger than the groove. The OP posted a pic of his on the wheel. Itdoesnt look big enough to reach the groove. If he freezes his, it will be even smaller.

 

[Action]

I just took apart the wheel and here are some pics. Does anything look wrong?

View attachment 823369

View attachment 823370

look at this first pic. If the o-ring in this pic is frozen, it will draw closer to the studs. Until it warms back up.

 

[Edis06]

When an impact gun is used to install the nuts, it will distort the threads in the nut. Then, they can be very difficult to remove. New OEM nuts will spin on and off easily when you install and torque by hand.

You are absolutely correct. I pulled my wheels off many times by hand and once broken free, they would spin off. Once I had my "new" tires installed by a bunch of monkeys with impact guns, I now struggle with the lugs from the tip all the way down. Did I mention they broke 3 of them off?

DO NOT USE IMPACT WRENCHES ON THE HMMWV.

 

[TOBASH]

i froze mine last 2 because they were slighly bigger than the groove. The OP posted a pic of his on the wheel. Itdoesnt look big enough to reach the groove. If he freezes his, it will be even smaller.

I defer to your more extensive experience.

 

[cg25713]

Action: What do you make of these photos? This is the original black o-ring that was in the tire.

 

[Action]

Action: What do you make of these photos? This is the original black o-ring that was in the tire.
View attachment 823456View attachment 823457

how thick is the new o-ring you are using? And where did it come from? And part number?

 

[cg25713]

The red o-ring I tried that did not seal the wheel is 3/16" part #12460338 from hummerpartsguy.

The original o-ring in the wheel was black and although compressed into a triangular shape, measured 1/4" wide.

I'm going to try o-ring part #12342633 which I believe is 1/4". I should get it today and will report my findings with pictures here. Hopefully this might be helpful to others in the future.