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Discussion in 'Transmission & Driveline Topics' started by Camaromurph, May 17, 2020.
definitely OUT of the car. You can make a yoke holder out of MOST anything....and a drill bit.
Link to Eatons instructions.
I’m going to start reassembly this weekend. Thoughts on using the crush sleeve during initial set up? Is it okay not to use it?
Do not install the crush spacer until the final assembly. Use the old nut for trial assemblies and save the new nut for the final assembly. Be sure that you set the pinion bearing preload correctly for every trial assembly. Use an axle to turn everything when checking the pattern. Turn it about 6 full turns in both directions.
So good day today.
Installed the pinion bearing races and the axle bearings.
Got the pinion shims on and the inner bearing pressed on. I didn't have a 0.001" feeler gauge to check but I did have a 0.002" gauge. I was using a press so I'm pretty sure they went on all the way.
Pressed the bearings on the Detroit Truetrac. Then proceeded to try to find the perfect slip fit for the carrier shims. I started with the old shim dimensions and subtracted about 0.004" from both. I could not get the shims in easily so I took the smallest shim out and it slide in. I set up a dial indicator to check for side to side movement. My first try their was about 0.001" movement so I changed up a shim and got it to virtually nothing. This is what I will start my set up with. I did not put the bearing caps on when I did this. I hope this was Okay.
I then got the ring gear mounted to the Truetrac and torqued down.
It was nice having my helper for the day. Tomorrow will be back under the car cleaning off undercoating and on Monday when I get my helper back we will start installing the pinion and gears and checking the pattern.
Nice work! great benefit to your helper to go through all this as well.
Okay, quick question. I set the pinion bearing preload for my first trial run. My Chevy factor repair manual calls for 24-32 in-lbs for new bearings where everything else seems to indicate about 18 in-lbs. right now I have it set at about 27.5 in-lbs. Is that okay?
A bit on the high side, but it would live. I aim for 22 - 25 preload. Make sure you set the same preload on every attempt till you're done.
believe most stuff has been covered... only other thing i could recommend is when setting your backlash.....take note of the indicator TRAVEL direction. (hard to put into words) You want the indicator to travel in a straight line with the gear tooth....not some obscure angle..
see how the TRAVEL of the indicator will make a small CHORD relative to the CIRCLE of the ring gear...also note you are only traveling about .020 ....but consistency in your set-up will allow you to compare APPLES to APPLES when making shim changes.
also when post pics of your pattern for ?'s.....it is better to view when the pic is perpendicular to the FACE of the tooth... like this
as opposed to this
That's too much bearing preload. You should be around 20-21 inch pounds.