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LM 2nd Design Front Spindle & Backing Plate Identification
Posted by: Lane66m ()
Date: October 13, 2020 05:26PM

I had a recent request to determine how someone could tell a 1st design front brake backing plate from a second design.

The second design changed the axle spindle, brake backing plate, brake pivot bolt and the pivot bolt washer.

Without removing the drum, there is no way to tell unless yo can find the axle spindle part number on it. I did not look for the part number on one. Maybe I will tomorrow.

Removing the drum, you can determine the second design by the hex plats on the brake pivot bolt. The 1st design has a wide flats on its bolt. The second design has thin flats on its bolts.

Once removed you will see the major changes. The bolt shoulder is not as large. It is 0.616. 1st design is 0.750. The 1st design will thread into the second design axle spindle hole. But it will damage the the 1st design backing plate. (VOE)

I found out about this change the hard way on my More Door when I did all the rework on the front suspension part. I grabbed the 2 best axle spindles and put them on. Then I found the bolt shoulder bending the backing plate when I started tightening. I thought I had not centered the plate. Lower bolts weren't in yet. Took it apart and found the smaller hole on plate and noticed the axle spindles fit the bolts. I grabbed 2 more axle spindles of the 2nd design and swapped them in with the right bolts and the matching plates. These 2nd design plates were the best I had.

Al
Georgia

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Re: LM 2nd Design Front Spindle & Backing Plate Identification
Posted by: jjohnsonjo ()
Date: October 13, 2020 06:07PM

Thanks Al, I was going to suggest you post that PIC to the group, but you beat me to it. I was thinking the ones without the shoulder on the pin side for the retainer plates may be from the rear. Maybe you can confirm.

J.O.

65 Corsa Turbo Vert
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2010 BMW F 650 GS
2003 Bounder 36D
2013 KIA Optima SX turbo-AKA ZIPPY (wife,s car)
69 Newport Holiday Sailboat
Baja 150 dune buggy cart
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2016 KIA Sorento SXL Turbo

Bethlehem,Pa


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Re: LM 2nd Design Front Spindle & Backing Plate Identification
Posted by: Lane66m ()
Date: October 13, 2020 06:13PM

J.O.

The other set of pins I have have a shoulder of 0.646. I thought those were rear bake pivot bolts. I will look again tomorrow and post better photos of all 3 styles.

Al
Georgia

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