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Transmission disassembly

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#1
gtphillips72

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Hi All,
New guy here. I am using a community college evening class to rebuild my '92 transmission and install a new clutch. We got the 41mm nut halfway down the mainshaft off with an air hammer, expecting the synchros to simply slide off as implied by Rod's book. Not so. Even with some pry bar pressure they do not budge. Help please.

#2
FTodaro

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if I recall correctly once you remove the 41mm nut the gear that is behind it has to be taken off the shaft with a puller, its pressed on the splines of the shaft. Read Rod's book carfully. If your like me, with that fine print i need my good reading glasses. You may have to fabricate a puller that will get you down the shaft and to the gear. Or you may be able to use a bearing seperator on it, I have always used my home made puller.

Frank
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#3
Jamz14

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Rods book????!!!! I'd be very interested in obtaining this book. I've thought about attempting my own tranny rebuilds but have always been a bit intimidated by the trans.
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#4
FTodaro

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Rods book????!!!! I'd be very interested in obtaining this book. I've thought about attempting my own tranny rebuilds but have always been a bit intimidated by the trans.

The bible of DIY http://books.google....id=8eNAb48HomAC
it gives you a step by step picture by picture process. Best to talk to someone on the phone before you dig in. I had some help and lent me the special tools you need to do the job. All of the tools you need you can fabricate. tube wrench to remove the 41mm nut on the main shaft, Long gear puller to remove the gears off the main shaft.
I would buy the book as its a good investment and study it first to see if your up to the task.

Some people may not think its worth the work vs. buying a rebuilt one, I just enjoyed the challenge.

Frank
TnT Racing
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Make it Rain - Made Paypal donation of $100+ We have a Winnah! - Won their 1st race... Congratulations! Bona fide - A bonafide Spec Miata driver Donor - Made PayPal donation

#5
gtphillips72

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In step 33, picture 5/33, of Rod's manual, after getting the 41mm nut off, the clutch hub with syncro mechanism is seen to slide off the mainshaft. Mine doesn't slide, or even move with considerable prying pressure. Does it need to be taken off with a puller, or is something wrong?

#6
FTodaro

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I sent you a PM to send me a picture on my email so I could confirm where you are but bottome line if it does not slide off your going to have to pull it off one way or the other.

this is where you are:
this has to be pulled off the shaft. this is the 5/R shift Hub
Attached File  Garage fun 028 (Medium).jpg   57.36KB   35 downloads


you need to fabricate the two long tube pullers the first is a 41 mm tube wrench, which your past this point but you will need it to get in back together.

the other is a gear puller that will reach over the shaft to pull the gears off the shaft.

Attached File  Garage fun 035 (Medium).jpg   46.19KB   39 downloads

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Frank
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#7
dstevens

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Rods book????!!!! I'd be very interested in obtaining this book. I've thought about attempting my own tranny rebuilds but have always been a bit intimidated by the trans.


Yep, the Grainger book is great. Got mine at Amazon. How I learned to work on trans and rear ends on the circle track cars was to get old carcases and learn to take them apart with whatever manuals and tools I had then reassemble what I could. It's good practice and you aren't out a race worthy piece of gear if you make a mistake. In fact, once you get the hang of it you can use those cores to build something you can race.

#8
gtphillips72

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Yes, that is where I am, thanks very much for the picture of the tools. Rod's book has been very complete up to now.

#9
gtphillips72

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What are the dimensions of the puller and tubewrench in the picture?




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