Rebuilding Power Lock limited slip unit question

[Cranky]

Been many years and then some since doing one of these and want to make sure the plates are stacked correctly. The way I'm seeing it the first plate that goes into the carrier half is a tabbed flat plate then a conical spline with the cup facing up or towards the side gear then a conical tabbed plate, then a flat splined and lastly a flat tabbed plate.....?

 

[69Bee]

Been a while since I rebuilt mine, but I would suggest to download a manual. They have the correct order in the axle section.

 

[Cranky]

Used to have a PDF file of how it all goes but sure can't find it now and haven't had much luck in finding it on the net after spending some time looking so I figured that trying here would help....

 

[lewtot184]

from what i can see in a service manual; side gear-flat plate-flat disc-dished plate (concave facing side gear)-dished disc (concave facing side gear)-flat plate, in that order. flat plates look like they are the drive plates. clear as mud?

 

[69Bee]

I took a pic of the plate/disc order for you:

 

[lewtot184]

i have a 65 and a 69 service manual. looking at the two manuals they show the order for the disc's and plates the opposite for the 8 3/4 vs the 9 3/4. both were borg warner power-loks,....? makes me wonder if it makes a difference.

 

[Meep-Meep]

If I recall the cupped plates on the 8.75" were farther away from the side gears.

Also as a side note, take a good look at the bolts that hold the carrier halves together. I have seen those badly stretched. The fix, since I was unable to get new ones, was to get extra long grade 8 5/16-24 bolts and cut off the RH thread section. Then using a LH die nut in a holder I cut new threads using my lathe. I installed them in a carrier and they torqued up as you would expect. I have the stuff so let me know if you need a set and I can make them for you.

 

[Cranky]

i have a 65 and a 69 service manual. looking at the two manuals they show the order for the disc's and plates the opposite for the 8 3/4 vs the 9 3/4. both were borg warner power-loks,....? makes me wonder if it makes a difference.

I have a Dana 70 (same size discs?) and it was like what the pic that 69 posted. The 8 3/4 that I'm working on is like what you say and also wonder if it makes a difference. It looked like it had never been into before since the adjusters were not boogered up by someone using a regular punch to set back lash instead of a spanner plus none of the other fasteners looked like they ever had a wrench or socket on them. If someone has been in this thing, I sure can't tell it and I usually can. I put it together like it came apart but I haven't put any Loc-tite on any of the bolts yet.

If I recall the cupped plates on the 8.75" were farther away from the side gears.

Also as a side note, take a good look at the bolts that hold the carrier halves together. I have seen those badly stretched. The fix, since I was unable to get new ones, was to get extra long grade 8 5/16-24 bolts and cut off the RH thread section. Then using a LH die nut in a holder I cut new threads using my lathe. I installed them in a carrier and they torqued up as you would expect. I have the stuff so let me know if you need a set and I can make them for you.

Yup, I know about stretched bolts on these things. Found many over the years but I have a decent supply plus I have a small machine shop too but the bolts from this one are pristine....and I'm glad of that lol but I do appreciate the offer! I also kinda figured DoctorDiff would respond since he's been looking in.