problem installing gears
05-11-2009 | 09:19 PM
#11
@ axisT6,
Thanks for helping out here.
I would like to ask more about break in between AAM and other mfg gears. Do the GM OE gears and their claimed 1500 degree heat treating require the same 500 mile deal as the others?
Thanks for helping out here.
I would like to ask more about break in between AAM and other mfg gears. Do the GM OE gears and their claimed 1500 degree heat treating require the same 500 mile deal as the others?
05-11-2009 | 10:48 PM
#12
Oh. Well, ideally you should put 500 miles on the gears before you run them on the track. If that is not possible, then at least drive the truck for 30 minutes preferably down the highway at no more than 60 MPH. Afterwards, park the truck and let the differential cool completely. That will at least get the initial break-in done.
If you choose to fully break them in, after the initial break you should drive the truck as if a cop is behind you. No hard starts, no hauling, no towing till you 500 miles. Keep your speed under 60 as well.
If you choose to fully break them in, after the initial break you should drive the truck as if a cop is behind you. No hard starts, no hauling, no towing till you 500 miles. Keep your speed under 60 as well.
Hey, you forgot to tell him to check the fluid... don't you remember how I broke the bed of the truck going over those damn ramps?
<< Agrees on the 500mi break in period.
05-12-2009 | 08:12 PM
#15
The proper amount of preload for the pinion is 14-19 in. lbs
I am curious, where do you get your specs from??? According to service information, yes I am a GM tech, it is 25-35 inch pounds with new bearings??
Just curious how other people do things, not doubting you....
I am curious, where do you get your specs from??? According to service information, yes I am a GM tech, it is 25-35 inch pounds with new bearings??
Just curious how other people do things, not doubting you....
05-13-2009 | 02:10 AM
#16
The proper amount of preload for the pinion is 14-19 in. lbs
I am curious, where do you get your specs from??? According to service information, yes I am a GM tech, it is 25-35 inch pounds with new bearings??
Just curious how other people do things, not doubting you....
I am curious, where do you get your specs from??? According to service information, yes I am a GM tech, it is 25-35 inch pounds with new bearings??
Just curious how other people do things, not doubting you....
05-13-2009 | 12:53 PM
#17
Eric, I went out and looked at my axle... If you grab the pinion by hand, there will be some slack, I really can't tell exactly how much, but it does turn back and forth... I'd guess its like we talked about, its the pinion moving back and forth in the ring gear slightly.
05-13-2009 | 07:17 PM
#19
Im sorry to sound dumb but how is the preload set? I have put alot of force on the nut to install the pinion and I dont think I have even crushed the crush sleeve yet. I am just wondering if you apply enough force to crush then back off and preload to 25-35 inch pound? Also why so little?
05-13-2009 | 08:03 PM
#20
preload is set by crushing the sleeve. The pinion will move in and out of the diff untill you get the nuttight. When you get it tight, the pinion will not move in and out, then turn very little because you will be adding preload after that. Do not over tighten then loosen it, tighten very litle at the time.
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