Hi everybody, I ordered new front pad (disk brake on 71 442), and it comes with the 2 bushing for the calipers,
but the one that was installed was short, about 3/4 inch but the new one is much longer,
so which one is appropriate ?

Thanks

 

The shorter of the two is the correct one.....just measured one here and the length is around 0.62".

 

I've never seen that long bushing in any GM application. The mounting bolt isn't long enough for the threads to reach the bracket if you were to use it.

 

Thank a lot, just measured the short one and 0.620 exactly.

 

I see what you mean, at least I have the good pads.

By the way Joe, what would be the best or correct method of installing the front spindle nut without having too much preload on the bearing?

Thanks again

 

You know you need two short bushings per caliper, right? And the thing that is even more important to replace is the rubber o-rings in the caliper ears that the bushings and pins slide in. Lube new ones with silicone grease. I usually use a kit like this that includes the o-rings and bushings. The anti-rattle clips typically come with new pads, so I have a bunch of extra ones.

Just out of curiosity, is the long bushing exactly 2X the short one? I'm wondering if it was made wrong.

 

There's actually a process in the Chassis Service Manual, but to be honest I tighten the nut while spinning the rotor to seat the bearings, back off, then repeat by feel. Obviously the slots in the nut need to line up with the cotter pin hole.

 

Yes 2 bushings, and the long one is exactly 1.150", see pic for numbers on the bag...