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  #76 (permalink)  
Old 01-16-2014, 10:37 AM
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I didīnt want to install the Powertrax just yet, nor the outer bearings.

Anyhows hereīs another swipe at it.




Quite honestly I donīt think Iīm going to better this.

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  #77 (permalink)  
Old 01-16-2014, 12:11 PM
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It doesn't look bad to me. I'm guessing that you have gone thinner and thicker with the pinion shim and this was the best.

I understand why you didn't want to assemble the Power Trax. I had forgot that you were using that.
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  #78 (permalink)  
Old 01-16-2014, 01:47 PM
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Quote:
Originally Posted by big gear head View Post
It doesn't look bad to me. I'm guessing that you have gone thinner and thicker with the pinion shim and this was the best.

I understand why you didn't want to assemble the Power Trax. I had forgot that you were using that.
I just ran out of combinations on the pinion shims, the one I used was the last chance shim.

I got to the tire dealer just before he closed and pressed the bearing onto the pinion.
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  #79 (permalink)  
Old 01-19-2014, 05:20 AM
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Today I took the bearing off and added a thin shim.
Found out I can use my bearing removal tool to install too.

This is where Iīm at, 0.005 backlash, 25inchpounds on the pinion.



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  #80 (permalink)  
Old 01-19-2014, 12:23 PM
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Looks like it's centered pretty well between the heel and toe, but it's not deep enough. The depth was better in the pictures above.
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  #81 (permalink)  
Old 01-20-2014, 11:56 PM
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Everything has come to a standstill.
My PowerTrax, listed for a series 3 carrier will not physically go in
to my series 3 carrier.
Iīm stumped.
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  #82 (permalink)  
Old 01-21-2014, 06:02 AM
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Did you order it for the 7.5 or 7.6? There is a difference in the case between the two. Even though they both fit in the same housing they are different internally.
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  #83 (permalink)  
Old 01-21-2014, 08:04 AM
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My PowerTax fitted into my series 3 carrier, been there since 1996.
It is listed on Summit for a series 3 carrier.

PowerTrax part PWT-1932-LR

3 carrier.


And here it is snug in the 2 carrier.


Looks like Iīm screwed.
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  #84 (permalink)  
Old 01-21-2014, 08:29 AM
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2 or 3 series doesn't matter. Internally the 2 and 3 series are the same. The only difference is the location of the ring gear flange. Are you using 28 spline axles? Are both of your cases for the same axle splines?
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Old 01-21-2014, 08:41 AM
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Iīm using 26 spline axles, PowerTrax is for 26 splines too..

Description on RockAuto;
"USA STANDARD GEAR Part # USA20088 Standard Open Carrier Case; 3.23 Ratio & up; Matching Hole Size
Rear Diff; RWD; GM 7.5" & 7.6" Rear, '82-'92 - 26 Spline"
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  #86 (permalink)  
Old 01-21-2014, 03:33 PM
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Are you sure both carriers are open dif. carriers?

Maybe the gids are telling you to get a better locker. I'm jaded, I gave up after 3 sets of Lockrites in a 8.5 truck application. Some guys have great luck, I got burned, badly. My application was short 27" tires with stock Vortec 350 power.

peace
Hog

Last edited by Hogg; 01-21-2014 at 03:44 PM.
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  #87 (permalink)  
Old 01-21-2014, 03:43 PM
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Powertrax numbers, last column is the LockRite part number, 2nd over is the No Slip traction system.

GM 7.200 26 OPEN IFS 1935-LR
GM 7.500 10 BOLT 26 OPEN 92-0775-2605 1930-LR
GM 7.625 10 BOLT 26 OPEN 92-0776-2605 1932-LR
GM 7.625 10 BOLT 28 OPEN 92-0776-2805 1931-LR
GM 8.200 10 BOLT 28 OPEN B.O.P. 92-0782-2801
GM 8.200 10 BOLT 28 OPEN 92-0782-2805 1940-LR
GM 8.500 10 BOLT 28 OPEN 92-0785-2805 1920-LR
GM 8.500 10 BOLT 30 OPEN 92-0785-3005 1921-LR
GM 8.600 10 BOLT 30 OPEN 92-0786-3005
GM 8.875 12 BOLT 30 OPEN 92-0788-3005 1910-LR
GM 9.200 14 BOLT 33 OPEN IFS 92-0792-3301 1950-LR
GM 9.500 14 BOLT 33 OPEN 92-0795-3305 1950-LR
GM 10.500 14 BOLT 30 OPEN 92-0705-3000 1955-LR


From here
http://www.powertrax.com/pdf/PowertraxCatalog.pdf

peace
Hog
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  #88 (permalink)  
Old 01-21-2014, 03:47 PM
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Quote:
Originally Posted by malc View Post
Iīm using 26 spline axles, PowerTrax is for 26 splines too..

Description on RockAuto;
"USA STANDARD GEAR Part # USA20088 Standard Open Carrier Case; 3.23 Ratio & up; Matching Hole Size
Rear Diff; RWD; GM 7.5" & 7.6" Rear, '82-'92 - 26 Spline"
But the Lock Rite has different part numbers for all 3 apps,
26 spline 7.5"
26 spline 7.626"
28 spline 7.625"

3 differnt part numbers.

peace
Hog
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  #89 (permalink)  
Old 01-21-2014, 04:18 PM
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There are least 2 different open carrier cases for the 28 spline assemblies. The internal gears do not interchange between the two because the same problem you're having.
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  #90 (permalink)  
Old 01-21-2014, 11:50 PM
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Quote:
Originally Posted by lmsport View Post
There are least 2 different open carrier cases for the 28 spline assemblies. The internal gears do not interchange between the two because the same problem you're having.
Iīm using 26 spline.
I only search parts relative to 26 spline 7.5.
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