Replacing rear pinion seal

bmc52387 · 10-16-2008, 10:06 PM

I need to replace my pinion seal on my rear diff. Any pointers? I have the pinion seal and side differential seals ordered.

Busted Knuckles · 10-18-2008, 11:13 AM

If you haven't done so yet, get the http://www.toyota-supra.info/forums/...9950-tsrm.html

I suggest you get access to air tools, especially a good impact wrench. The pinion flange bolt is a serious PITA without one. The factory torque setting is 134 ft-lbs. And yours has been on there for at least 13 years. It will not come off easily. Did you get a new spacer/crush sleeve? These are also suppose to be replaced when the pinion nut is removed. This guy is important to set the proper pre-load on the pinion bearings. Some shade-tree mechanics go ahead and re-use the old one, but most professionals say it is a No-No, and will lead to quick failure of the pinion bearings. I say, replacing it is cheap insurance. For the rest, follow the TSRM.

P.S. Air tools only to remove. Use a torque wrench to reassemble.

10-16-2008, 10:06 PM	#1
bmc52387 Stock Join Date: Mar 2008 Location: Ames, Iowa Posts: 25	Replacing rear pinion seal I need to replace my pinion seal on my rear diff. Any pointers? I have the pinion seal and side differential seals ordered.

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10-18-2008, 11:13 AM	#2
Busted Knuckles 12psi boost Join Date: Dec 2007 Location: Atlanta Posts: 300	If you haven't done so yet, get the http://www.toyota-supra.info/forums/...9950-tsrm.html I suggest you get access to air tools, especially a good impact wrench. The pinion flange bolt is a serious PITA without one. The factory torque setting is 134 ft-lbs. And yours has been on there for at least 13 years. It will not come off easily. Did you get a new spacer/crush sleeve? These are also suppose to be replaced when the pinion nut is removed. This guy is important to set the proper pre-load on the pinion bearings. Some shade-tree mechanics go ahead and re-use the old one, but most professionals say it is a No-No, and will lead to quick failure of the pinion bearings. I say, replacing it is cheap insurance. For the rest, follow the TSRM. P.S. Air tools only to remove. Use a torque wrench to reassemble.