How do I rebuild my own transmission no a 1990-1991 maxima?

You don't. Transmissions are extremely complicated and if you have to ask, then you really don't have the knowledge or ability to do this yourself.

Transmission

Have you tried the Nissan Dealer... the Factory Service Manuals published by the manufacturers are usually the best and most detailed manuals you can buy.

You asked how to repair it in a different post and I told you that it is not likely that you could do it on your own without any real knowledge of how to do so. Trust me on this... If you have no clue right now, the book will not help you with a transmission rebuild.

If you have a bad trans, best bet is to get another one from a junk yard.

Fine... give me a negative because I gave you an honest and accurate answer. It's too bad and it's not my fault that what I told you is something you don't want to hear.

Have fun trying to rebuild the transmission and come back and let us know how it goes for you.

If you want to do it, ( but honestly it will never work again most likely) You buy a book specificly on your car. Get a ramp lift to raise your car up and a jack that will hold and lower your transmission out and back into place.

Buy a book specificly on your car and its transmission.

Then you sell it all for scrape when it never works again.

*** Sorry but this is not a do it yourself job unless you have been trained in this.

It is not polite to give a negative rating, to first a great expert who is being honest with you. If you come back and tell us you have a full shop, with equipment to lift your car and drop your transmission. If you have years of mechanical experience and work on all of your other car issues, that may be different.

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Originally Posted by Fr_Chuck

It is not polite to give a negitive rating, to first a great expert who is being honest with you. If you come back and tell us you have a full shop, with equipment to lift your car and drop your transmission. If you have years of mechanical experience and work on all of your other car issues, that may be different.

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I agree... ONE single piece of crud half the size of a small grain of sand will kill it. ANY lint from paper towels or cloth towels will kill it... if you can't properly recognize and measure wear and clearances it will either not work... or you make it self destruct.

Its most certainly NOT for someone unless you have the capacity and know-how to properly rebuild an engine, including knowing acceptable clearance and tolerances. You don't just slap parts together and expect it to function correctly.

If you had that know-how, you would have know what books you need, what tools you need, and where to get them.

You are aware the transmission cooler and lines are going to have to be completely flushed and cleaned or the crud from this failure would kill even a professionally rebuilt unit shortly after being put into service? This is nothing like changing a flat tire or a set of spark plugs. Its arguably one of the most difficult things to repair outside of a chassis after a major accident.

That's reality... transmissions are precision items.

Automatic transmissions today are electro-mechanical marvels. They are more sophisticated and intricate than engines. Being the weak link on FWD vehicles, they need to be very well maintained to go the distance. I drop and clean the pan and magnet, change the filter, and refill with full synthetic ATF every 30,000 miles. I do this so that I never have ATX problems. Manual transmissions I will work on--ATXs no.

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Originally Posted by Tymax

how do i rebuild my own transmission no a 1990-1991 maxima?

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By the niavety of your question, you are not prepared either by skill or by tool to undertake a trans rebuild yourself.
I have rebuilt tons of transmissions, auto and manual and have invested blood, seat and hard cash to learn the tricks and trade over decades.
If you looking here for a book, walk away from this car and look for another one. You better option would be simply replace the trans with a known, good working unit then experiment with the faulty one. You'll be very surprised what you find inside...
While I appreciate an honest attempt by a DIYer, this task isn't for the beginner.
BTW: there is no such thing as a 90-91. It's one or the other.