The Moser rear end housing has perches that have holes for aligning thast are larger than the heads of the leaf spring locating pins supplied by Hotchkis. I guess this can assist in fine tuning alignment however I am curious if others have used locating pins thast have heads of a larger diameter or other methods to make the fit tighter. TIA for assistance.

You should have pads with a molded in section that fits into the locating hole. Then there is a metal insert (bushing) that goes into the the hole in the pad that aligns the pin properly.

The trick is to get it all to fit together, the bushing likes to get crushed by the pin instead of aligning the pin.

Thanks, I was going to assemble without the poly pad as I have read that it is better to leave it out when using Cal Tracs however I dont know how true that is.

If you don't use the pads then you need to use some bushings to take up ithe space in the holes.

Lorne - I didn't use the pads and went a step further than Freddie suggests with bushings. Because the resources were availble I had the holes in the perches welded up and carefully drilled so the alignment bolt (pin) just fit. This required accurate placement when drilling the holes with a special flat tipped drill so you don't drill into the axle tube...

Thanks, I will work on it this week and see what I can do. I have the Hotchkis poly pads so I could cut off the part that is supposed to be place in the hole and use it, the Hotchkis bushing and the locating pin to ensure a tight fit in the perch hole although I would think metal would be better. I dont have access to a welder so I will have to find an alternative

A machine shop could make you some steel bushings in 15 minutes or less.

Thanks, I think that is what I am going to do. I will get an accurate measurement of the perch hole diameter and depth and get some made.

I have a Moser and new leafs/pads. The metal insert molded into the rubber ones in my leaf install kit wouldn't fit over the pins in my new leafs. I bought the Energy Suspension poly pads for $25. They have a removable metal insert that I cut with a Dremel then drove down over the leaf spring pin with a hammer. Then I pushed the pad down on that and the nub on top popped right into the Moser perch. Perfect fit.

Also if you decide to use pads, you may want to take a razor knife and cut the top corners off the pad down the entire length. Otherwise, they want to bow up while installing the rear and move around because the perch has rounded corners inside.

So I made some bushings that fit over the heads of the locating pins and fit great into the perch holes however found out that the locating pin head height at about 5/16"" is taller than the depth of the locating holes in the perches it looks like there is only about 1/8" depth there so the rearend can rock a bit in the perches as it doesnt sit flush. So I guess I will need a metal spacer on top of the top spring that reduces the height of the pin to about 1/8". This is a learning experience.....

So I made some bushings that fit over the heads of the locating pins and fit great into the perch holes however found out that the locating pin head height at about 5/16"" is taller than the depth of the locating holes in the perches it looks like there is only about 1/8" depth there so the rearend can rock a bit in the perches as it doesnt sit flush. So I guess I will need a metal spacer on top of the top spring that reduces the height of the pin to about 1/8". This is a learning experience.....


Im up to exactly the same point .Im finding the same things.

What about grinding the pin down to about the same thickness of the spring perch?

Yes I was thinking about grinding the pin down however I thought if I needed to add a pinion shim to correct angle once I finish installing it that I may need that extra height. Too bad the locating holes are so shallow.