[centexrzr]

So the nut on my upper a-arm decided to round itself off while I was removing the bolt. Bolt was getting a little tight and then loosened up again and that's when I noticed the nut spinning in the wrench. Anyone know the part number for this?

 

[K&M]

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Invest in a good set of 6 point sockets or wrenches to prevent this from happening. 12 point sockets and wrenches, especially cheap ones, will round off bolts and nuts quite often.

Also, hold the bolt with the wrench, and remove the nut. Less drag friction that way.

 

[MT4Runner]

Also, hold the bolt with the wrench, and remove the nut. Less drag friction that way.

Agree in general--but if that slippage had been the case here, the bolt head would have been rounded off.

 

[centexrzr]

I had a good 15mm wrench on there. Not a harbor freight one.

 

[MT4Runner]

Some Polaris bolts have threadlocker which can actually act like an "anti-seize" and prevents corrosion.
Some Polaris bolts are dry...and they can easily corrode with time, water, and dust. Not surprised.

I put everything back together with either anti-seize or threadlocker.

 

[centexrzr]

I just had these bolts out 2 weeks ago and everything went back together well with no cross threads and torqued to 42ft lbs. Gonna chalk this up to shit happens and move on. Now to go break these things apart so I can get a new one in place.

 

[centexrzr]

Air grinder, air chisel, cold chisel, sledge, and an hour.

 

[K&M]

Nuts are cheap enough, I’d probably buy a handful of them to have around for the next time. Having them on hand will 100% guarantee that it never happens again.

If it does, it will be a different nut that you don’t have 😂.

 

[MT4Runner]

Honestly with the number of 10x1.25 (15mm hex) bolts and nuts that Polaris uses, some spare nuts aren't the worst idea ever.

I changed the fuel pump in my '93 E150 van, the power steering pump in my daughter's '00 K1500 and bought a RZR in the same week. I never knew how badly I was missing 15mm in my life. I went right down to the pawn shop and bought 4 or 5-15mm sockets (3/8 and 1/2 drive) and 3-15mm combination wrenches. Before that I had a single 15mm combo wrench and a 15mm impact socket. It's not a common size in all socket sets...now I have them on my pegboard, in my toolbox, and in my trail too bag.