[Daox]

Originally Posted by H-Man

http://bgbonline.celicatech.com/6g/t...05%20speed.pdf
The C52 gearbox rebuild
http://discodan.org/gfx/celica/servi.../chassis/a.pdf
Found those searching for 'C52 bearing preload'

My ae92 FSM outlines a similar procedure I think. For torquing, you need an in*lb torque wrench or maybe a spring scale and a wrench with a hole drilled in the handle an inch away from the center of the box end.

I finally read up on this. You need a tool to spin the differential and find the 'starting torque'. I'll quote the service manual in the link you have above:

Using Differential Preload Adapter (09564-32011) and an INCH-lb. torque wrench, measure differential side bearing starting torque. See Fig. 15 . Starting torque should be 7-14 INCH lbs. (.8-1.6 N.m) for new bearing and 4-9 INCH lbs. (.5-1.0 N.m) for used bearing. If preload is incorrect, remove transmission case side bearing outer race, and select new adjusting shim.

When I googled that part number, I found out its really nothing fancy. Looks like something you could pretty easily fab up with some scrap metal. Here is what it is:





With that tool, you stick it in the trans and use your torque wrench to find out at what torque it starts to spin. Based on that torque, you need to adjust the shims that preload the differential's bearings.





So, it looks like I'd have to procure an in-lb torque wrench (checked sears.com and they're ~$135), or figure out a lever + weight like the guy in the other link you posted did. Either way, it shouldn't be a show stopper by any means. Thanks for posting that info though!