Guide How To Remove/Install Tranny and LSD or Disassemble Gears

[mightyray]

Thought this might help for those looking for the lsd bearings:

LSD bearings G5R0-27-350B

I'm having trouble finding the part number for the axle seal(s) that should be replaced. Can someone help?

Is this it? F00327238B

 

[TurfBurn]

the oil seal in the first post is the axle seal. F003.... looks right.

 

[mightyray]

Ha! Thanks for pointing that out.

 

[mightyray]

Also, is it absolutely imperative to replace both LSD bearings. I just looked up the cost and it's over $60 for 2 of them.

 

[TurfBurn]

I have swapped diff's multiple times without replacing bearings. If you PULL them you HAVE to replace them, but if you are just moving the differential assembly with the bearings on it you are fine. You should technically check the lash, but many people get away without doing as such.

 

[ItsSlow]

I never replaced any of the bearings unless they were damaged.. and I had mine apart a few times..

 

[Prodigy]

The main thing is to check for scoring.

 

[mightyray]

Alright fellas, I need your help. I'm in the middle of this and when we cracked the case open we found a broken piece on the magnet and realized later that the part below the diff was broken. I've circled it in this picture. It's the piece held in tension with the spring. Can you guys tell me what it is and where I can find it?

 

[Prodigy]

it's the reverse gear lockout

 

[mightyray]

Oh thanks! Can I take it out, or do I need it?

 

[TurfBurn]

you need it... and you can't buy just that part...

 

[mightyray]

Damn. Turfburn, I just emailed you through your site. Can you give me a call? The welder needs to know what alloy the lsd is so he can tig weld it. Also does anyone have a part number for the lockout assembly? When I cracked the tranny open, the piece that I circled was broken in half but everything was working just fine?

 

[mightyray]

Well I ordered the part from my dealer at $40 and it can't get here until thursday so I'm without a car until then. I did some more research and I found that people on the forums used 1/16" nickel rod to weld the lsd.

 

[Prodigy]

cool. could you post the part number when you get it?

 

[mightyray]

It's called the guide plate and the number is F520-17-480K. That search program that the mazda dealer has is unreal. Why can't that stuff be open to the public!?

 

[steven giampino]

Some tools you will need for the project:

Drain Pan
4 Jack Stands
Jack
Impact Wrench
Torque Wrench
Creeper (optional)
14mm - sockets and wrenches
12mm - sockets and wrenches
19mm - sockets and wrenches
1-1/4" socket (or 32mm is the same size)
17mm - sockets and wrenches
10mm - sockets and wrenches
Instant Gasket
Pickle Fork Set
Liquid Wrench (WD40 or the like)
Grease
3 quarts of manual tranny fluid of your choice. (I personally like Redline Shockproof Lightweight)
Tranny Jack or a buddy to help you (Tranny weighs 95 lbs and fits in tight)

The install time will range between 8 hours and 24 hours of labor depending on how smoothly things go.

Parts I recommend you replace when doing this: LSD bearings, tranny seals, throw out bearing

I VERY highly recommend that you label each bolt and part when you take it out. So have a permanent marker and some masking tape handy.

some necessary part numbers courtesy of Prodigy:
G15M-R Part #'s ('01-'03 Mazda Protege manual transmission)
Oil seal
F003-27-238B
Transmission locking nuts
F520-17-628
F521-17-628a

when you did your diff did you have to dismantle any gears or have any problems with that...i hope i dont have to mess with any of that thats a risky take...and juss curious after reading the whole write up i diddnt notice you mentioning the torque wrench in any part...which parts should i be useing the torque wrench for ?????

 

[thepope540]

sub

 

[Prodigy]

When swapping a differential, you do not have to remove any gears (unless you need the ring gear for a Quaife LSD).
You need the torque wrench for every nut & bolt that is removed. (ie. outer case bolts, locking nuts, etc)

See my sig for a better understanding of the gears vs. the diff..

 

[joesalinger]

Thanks so much man! I think/hope I'll be able to do this on my own. Doesn't seem too hard...? Wish me luck

 

[A louie]

Do you need to drop the whole transmission when you do the clutch? or can you just drop half?

And where exactly are the 2 12mm bolts for the clutch actuator? Cant find them or I am just blind