No-kidding, Real Source for A2 Horn Button Repair Kit

[Mr. Recovery]

That part # 5703314 is the Part number for the complete kit. Most venders seem to be selling the individual part's from the kit.

dan-2beers.jpg

[lpcoating]

That part # 5703314 is the Part number for the complete kit. Most venders seem to be selling the individual part's from the kit.

dan-2beers.jpg

So is it A1 or A2?

[lpcoating]

I just compared it to my A2. Looks the same to me.

Guy

[Mr. Recovery]

I am almost 99% sure they are the same, all the TMs give the same number for all models of the 151. Keep in mind that the opening in the steering wheel "may" have shrunk over time!

dan-2beers.jpg

[rickf]

So it seems that the horn is the same for both vehicles. It is probable that the steering wheel has shrunk over time since it is plastic. How far off is it? Would it be possible to take a Dremel and a sanding drum and just open up the center just a hair to get it in? Get a caliper and measure the horn and then the hole and especially go around the hole with the caliper and see if it is uniform or if there are high and low spots in the circle.

[acudanut]

So it seems that the horn is the same for both vehicles. It is probable that the steering wheel has shrunk over time since it is plastic. How far off is it? Would it be possible to take a Dremel and a sanding drum and just open up the center just a hair to get it in? Get a caliper and measure the horn and then the hole and especially go around the hole with the caliper and see if it is uniform or if there are high and low spots in the circle.

I agree 100 percent. !!

[lpcoating]

Same horn in A1 wheel.



Guy

[Mutt Hunter]

Rick, funny you should ask...i broke out the "advanced measuring device" tonight, and the diameters are definitely different.

Note the 1966 manufacture date...






The diameter of the button is .03 of an inch bigger than the hole it goes in. That doesn't sound like much, but when you mate the parts up, it feels like a country mile.

So the consensus is just to grind the hole bigger because of "shrinkage"? I'll have to grind a second recess for the ring to hold it in after that.

Makes me wonder how painful its going to be to get the steering wheel back in the MUTT....

dee

[lpcoating]

I'll get a more accurate measurement of mine but it's smaller then the one you have. Even by eye ball measurements.

Guy

[m3a1]

Also, let's not forget there are parts out there that were refused by the government that never made it into the government stock. Parts that are surfacing and being sold as NOS.

Frankly, I don't see how a metal cup "shrinks" over time. I do see quite a bit of damaged metal around the circumference that is going to require some attention.

My advice - embrace the madness. Get a drum sander for your Dremel, do the work, install the horn button and put this behind you.

Cheers,
TJ

[m38inmaine]

The kit I used to repair my A2 horn button was NSN 2590000629840, it was a complete kit.

[muttguru]

Hello folks....

this story has already been done to death....not long ago too.

See here:- http://www.g838.org/viewtopic.php?f=3&t ... on#p105163

Ken

[Mutt Hunter]

Yep, agree with..."done to death." But in that case, nor this one, "death" didn't include a resolution other than boring the steering wheel to a larger diameter. I'm going to chalk this one up to inferior/non-compliant parts since the rest of my steering wheel isn't cracked like they normally are at this age and I'll just Dremel the thing as suggested. Too bad Lean Six Sigma didn't exist with the lowest bidder back in the day.

Thanks to all for the help/opinions.

[rickf]

Hold on there partner! Mark said his was 1 3/4 and that one you have there is real close to 2 inch. You don't want to try to bore it out that far. You need to find the correct horn button. Looking at your caliper you show .991 on the button and .967 on the hole but you are not taking a real reading on the hole. Use the inner caliper measuring jaws to get a true reading and get it in several spots. Be sure you are perfectly straight up and down so the caliper rides smooth on the inner walls. I am thinking that hole is bigger than your eyeball measurement. You have .024 difference as it is which is .012 off all around. That is pretty small but get a true measurement.

[Mutt Hunter]

I knew you'd bust me for not using the inner measurement calipers! I was actually marveling at how i'd gone a complete day without you catching that. Anyhow--the length of my ruler thing makes that impossible as the end of the ruler bumps into the steering wheel and i'd have to bend the ruler to make it work. Confusing, i know, but trust me--it makes using the inner calipers impossible to use for this measurement. I told myself the other day i need to go to Northern Tool and get a much smaller one. I found the one I have in a box of odd, one-off tools at a flea market 10 years ago and never bothered to get a smaller one.

As usual, the advice is sage. WILCO!

dee