Diff seal depth?
 

At what depth into the differential do the outdrive seals go when replacing?

The manual just states to use the SST, and I neglected to note how they looked before pulling.

I assume the outside solid rim of the new seal would be flush with the milled surface the seal is being placed into, but it never hurts to check.


TIA






The reason this is a question, is because there is no rim/seat for the seal to stop against, and if one where to keep pushing the seal in I think it could go all the way into the gearset before stopping

Yeah, just have it flush. That's all it needs.

When it's flush it should be evenly supported all around by the casing which is what you want. I think the front seal has a lip so it can't be installed too deep.

Dale

^Agreed. Just get it flush. I just used the old seal on top of the new seal, oil the outside up really well and tap it in. Just pull the old seal off and check frequently to be sure you're going in evenly and not too far.

FWIW:

http://i1126.photobucket.com/albums/...ent009medi.jpg

I would not oil up the outside of the seal. Friction is what is supposed to hold it in.



Agreed that it just needs to be flush with the diff casting.




John

It will stay in. It's oil, not grease. Without it the seal goes in alot harder. Making it harder to go in evenly and requiring that much more force....more chance to damage. Once the input end of the axle shaft is inserted it won't go anywhere and won't leak because of it.
If you have a seal driver, you might not need to do it, but it's what worked for me.

In most cases it will, but IMHO it is not good practice to do so.

Agreed. I have been a mechanic for over 10 years now. I NEVER oil the outside of a radial seal. And make sure to lubricate the inside sealing surface. The best rule of thumb there is to lubricate the seal with the lubricant that the seal is sealing. I.E. if the seal is sealing a camshaft use engine oil. If it is sealing a diff use the diff fluid. Dont lubricate the outside. Your just asking for trouble.

Where did u get the new seals? My driver side seal is leaking and I need some new ones. I don't know why it leaks because I thought there wasn't supposed to be fluid right there but any help would be appreciated.

You buy the seals from MAZDA. Any dealer should be able to help you. Read the FSM for specific instructions and this might help ..... https://www.rx7club.com/showthread.p...highlight=side You can get the part number from one of the pictures.

wow thanks alot that help out. :D