rear pinon seal

Ask our auto mechanics for help to all your GMC truck questions.
daveswall
Posts: 7
Joined: Sun Aug 24, 2014 11:14 am

rear pinon seal

Unread post by daveswall » Wed Jan 21, 2015 8:32 am

Hello I have to replace my seal on 2002 envoy and would like to know how. How tight to tighten the nut.
do you have to worry about a crush washer? thanks dave

User avatar
carriedi
Posts: 2446
Joined: Wed Apr 10, 2013 12:42 pm

Re: rear pinon seal

Unread post by carriedi » Wed Jan 21, 2015 11:36 am

before you disassemble the diff, mark the pinion, pinion nut and the yoke. A mark that will line up all three components together. You're going to need to have an inch pound torque wrench that measures from 0 to at least 60 inch pounds.

after replacing the seal, put the yoke back on with the pinion and yoke marks lined up. Then put the nut and tighten the nut up and make the mark line up like it was when you took it off. Then using the inch pound torque wrench, see how much torque does it take to rotate the yoke. (the wheels and brake drums should be off the vehicle when rotating the pinion yoke to measure the torque)

see spec chart:
Attachments
envoy diff spec.jpg
envoy diff spec.jpg (191.84 KiB) Viewed 8415 times

daveswall
Posts: 7
Joined: Sun Aug 24, 2014 11:14 am

Re: rear pinon seal

Unread post by daveswall » Wed Jan 21, 2015 1:38 pm

thank you

  • Similar Topics
    Replies
    Views
    Last post