Cotter Pin Installation - 2 applications

[Kenn S.]

When removing the (clearly original) tie rod ends, I noticed the inner tie rod cotter pins were secured using the (AIM) "Type 3" finishing method (image attached). I experimented reinstalling a cotter pin to the same spec using a hammer and punch, but even with light hammer pressure I broke the cotter pin.

So two questions:

1) How to properly apply a cotter pin finish in this fashion? I wonder if using an over-sized 6-point socket would get it started? That wouldn't depress the cotter pin into the castle nut, but it would curve it the right way to get it started. Or is there an old trick?

2) The (1980) AIM isn't specific about how the cotter pin for the brake pad pin is applied. Bend both sides back 180 degrees? Is the cotter pin installed from front to back or back to front?

[Edward J.]

Re: Cotter Pin Installation - 2 applications

Ken, Maybe try a 6 point socket one or two sizes bigger just to get the cotter pin to bend over like the factory.

[Kenn S.]

Re: Cotter Pin Installation - 2 applications

That was my initial thought too.

But I think what I'll try is with the cotter pin sticking straight out, bend the tangs (?) vertically, then bend the pin at the bolt downward into the castle nut. If the bend you make vertically is at a good distance, it should sit down into the castle nut at a right angle. Then the remainder of the tangs could be squared off using the socket. If that description makes sense.

The socket alone won't do it because it won't nestle the pin into the castle nut properly, at least not all by its lonesome.

Anyone know about the brake pins and the alignment/finishing of those cotter pins? Nothing in the AIM, or not that I saw. (Maybe that makes it a free-for-all, but I tend to doubt it...)

[Alan S.]

[Kenn S.]

Re: Cotter Pin Installation - 2 applications

That's a thought. In the '80 AIM, I don't see a drawing of the pin that's of any use. But if I look in the '70 AIM, I do see a picture. Both are attached.

Oddly enough, going through the '70 AIM, most of the brake pics are of drum brakes. Go figure... Like you, if the picture fits, I'd go with it given no other explicit direction. But I'm not putting drum brakes on my '70. (I know, I know...just having a laugh...)