Question about 1996 GMC Sierra

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How to fix and or replace rear seal on brake drum 1996 gmc sierra 1500

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  • brainmush Aug 19, 2010

    im sorry its the rear brake seal , right rear brake drum

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Take off the ring from the hub. The ring holds the locking key in place. Slide out the key. Take out the axel nut with a socket. Pull out the hub. Remove the axel seal with a seal puller, and turn consistently. You can also use a brake adjustment tool. It works just as well. Removing the seal might take some time, so be patient.

Posted on Aug 20, 2010

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Hi, this is a one piece seal. The transmission will have to come out, remove the flywheel to gain access to the seal. You will find a flange that is held in by 5 bolts, I believe. Remove this flange, remove and install the new seal and reinstall the flange.

It should be sealed around the flange to prevent leaking. The new seal should come with the necessary sealant. Use care to not damage the sealing area of the flange. Knock the old seal out and install the new one. Make sure that you lubricate the lip of the new seal before reinstalling the flange.



A good word: Use care when installing the new seal to make sure it goes in evenly all the way around. Don't just hammer it in or it will leak also. A dented or uneven seal will cause more heartaches than you want. Reinstall the flywheel and transmission and you are done. It is really good if you have a transmission jack and someone to help. It would also help to get a good automotive manual such as Haynes for reference.

Posted on Aug 19, 2010

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