Front Radius Arm Bushings... and then oops.

O2batsea

Well-known member
I think you'll be OK with your efforts to split the nut and remove it that way. The arm is probably OK. The nut is made of softer material than the arm. You simply galled the living heck out of the nut. No biggy.
 

Napalm00

Technical Excellence Contributor
I checked my truck and on mine the cupped washer is on the front and the flat on the rear. Maybe I have it wrong ?
 

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SaintPanzer

Well-known member
I checked my truck and on mine the cupped washer is on the front and the flat on the rear. Maybe I have it wrong ?

Not sure. As I said, the holes in the washers are different sizes, and the way I have it is the only way they'd fit. That said, they both have a cup in them, so really don't know what to say. Looking at this photo from a slightly different angle, you can just barely make out the cup in my front one, so I'd say we are the same... except mine is galled, and yours is not.
 

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SaintPanzer

Well-known member
Yes, here is a photo, pre-assembled on the bench. We are definitely set up the same.
 

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Dan kemper

Founding Member
Callsign: KK6ECF
I would just use a cut off wheel to cut mostly through nut, metal chisel to finish it off or gap it alittle and then spin off and service the threads in arm
 

SaintPanzer

Well-known member
I would just use a cut off wheel to cut mostly through nut, metal chisel to finish it off or gap it alittle and then spin off and service the threads in arm

Thanks. That's what I was thinking, except I couldn't find an appropriate cut-off wheel. So I drilled some holes in the flats, and started going at them with the cold chisel. I may still order the nut cracker. Could not get to it today, maybe tomorrow. If I get fed up with the cold chisel, I'll get the nut cracker. That said, any idea on the thread size/pitch? I will need to buy a die.
 

SaintPanzer

Well-known member
Minor victories: I was able to crack the nut with the cold chisel/drill technique, and finally have it off. I do not think I can save these threads with a simple M20 die chase:

So I'm in the market for a new bar. I've already contacted Gwynn Lewis (where I purchased the bushings) to see if they have a reconditioned one available (awaiting reply) and will also contact the previously mentioned site here in Germany.

To answer the question re: the aftermarket nut... yes. A set of nuts came with the bushings, and in my ignorance, I believed the "brand new, virgin" nut would be better than the 22 year old one.

Other note for the record, in case some other rookie comes along doing research before he gets in to this: If you are holding the cold chisel while also cupping the cup washer so that it doesn't "ring", when the chisel cuts through, you run the risk of pinching the meaty part of your hand between the chisel and the washer. When this happens, it's helpful to have a band aid near by, to keep you from getting too much blood on the washer. Just a helpful tip.
 

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Angus

Well-known member
It looks like the threads galled and seized. I put off the shelf M20s on mine with no issues, but as usual, I coat everything with grease to keep from rusting or seizing. I also added the YRM stainless washers.
Front.jpg
 

Napalm00

Technical Excellence Contributor
i mean since you are in a pinch maybe just cut that shitty part off (for now) and put on the old nut until you can get a new arm . look like you will Juuuuuuuust have enough thread to make it work. use some locktite for good measure
 

jymmiejamz

Founding Member
Callsign: KN4JHI
Are you alluding to aftermarket nuts being grade 5.8 or something else?

No, but the aftermarket one looks like stainless steel to me. I never have good luck with stainless steel fasteners. The factory ones could be stainless as well for all I know. I was just curious since the nut looked new.
 

Z.G

Well-known member
No, but the aftermarket one looks like stainless steel to me. I never have good luck with stainless steel fasteners. The factory ones could be stainless as well for all I know. I was just curious since the nut looked new.

I had a similar situation happen with a SS trailing arm nut(same nut, same situation)
 

erover82

Well-known member
Ah yes, that makes more sense. Stainless is more prone to galling. Zinc hardware with thread sealer or marine antiseize are a better option for most areas on these trucks.
 
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