Pinion Seal

[IceHammer]

I've been watching seepage from my pinion seal for nearly a year now. Now it has become a full leak, there is diff oil all over the underside of the car near the front of the diff, but no drips in the garage.

I've got my haynes and I did some youtubing (theres a good video of a guy changing a pinion seal on a GMC) and I wanted to run a list of what I'll need to do the job by you guys, because I won't have a way to get to the parts store this time while the bird is out of commission.

-New pinion seal
-New pinion nut
-Large socket for pinion nut (anyone know how big - 32mm? auto 2000 3.8L, no posi)
-Chisel / grease pencil for marking pinion, nut, U-joint flange
-RTV for pinon seal and flange splines
-Torque wrench (in-lbf)
-Puller to take u-joint flange off

Anything else? Has anyone who has done one of these have any tips?

[ssms5411]

Re: Pinion Seal

Sounds about right.

[Tom Rs]

Re: Pinion Seal

u sound like you got it covered. My mechanic did mine for free while it was on the lift for exhaust. I guess it is something kinda quick

[IceHammer]

Re: Pinion Seal

Yea it seems simple. But there is the possibility of ruining the diff from under/over tightening the pinion nut at the end, so I thought I'd ask for any pointers. I'll take some pics and do a writeup while I'm at it.

[ssms5411]

Re: Pinion Seal

Just make sure you TQ the pinion bolt to spec.

[Skinny]

Re: Pinion Seal

-RTV for pinon seal and flange splines

RTV?

Use thread sealer on the splines of the pinion and yoke. The pinion seal doesn't require any RTV either.