Subaru Legacy Forums

Subaru Legacy Forums (http://legacygt.com/forums/index.php)
-   Transmissions (http://legacygt.com/forums/forumdisplay.php?f=79)
-   -   DIY 5EAT Transmission Rebuild (http://legacygt.com/forums/showthread.php?t=156141)

ClimberD@HexMods 02-21-2011 12:23 AM

DIY 5EAT Transmission Rebuild
 
Thanks to some simple words from Rao :eek: and some timely motivation from Apex-GT, and of course the Factory Service Manual, I feel confident now that I can tear down and rebuild my 5eat, which suffers from a worn clutch packs= and perhaps some other issues that I believe are limited to wear parts. I may screw it up altogether, but you never get to find out if you don't try.

I have some other very exciting 5eat stuff in the pipeline, but one thing at a time is enough :)

So it's time to pick a kit. I will contact FBP to see what they would sell a 2005 LGT 5eat rebuild kit for. There are other ones online. Please weigh in if you know anything about this kind of thing.

Parts needed:

Snap-ring plyers
Transmission spring compressor used to get the snap ring out of there (example http://store.boxwrench.net/KD-Tool-2...-DVD_p_84.html)
OR some people just borrow or buy a cheaper one, or use a couple C-clamps if you are very careful.
Angle feeler gauges
A perfectly flat bar of some sort (to measure tolerances off the transmission front end)
Caliper or depth gauge to measure distances to .0001"
E-Star wrench to separate front diff case from main AT case
A home-made wrench to twist off the front diff bearing seals
Lead pen for checking front diff ring/pinion fitment.
Vaseline

E20 torx socket - $10 shipped, eBay
Various male torx sockets (I don't remember what size(s) you will need once in the trans, but there is one needed for removing a bolt that holds on the front pinion.

Subaru 5AT manual:
http://www.spooledupracing.com/downl...to%20Trans.pdf or
http://guibo.com/~guibo/subaru_doc/I...to%20Trans.pdf

Vacation Pics: http://legacygt.com/forums/showpost....&postcount=300

Subaru 5eat part numbers: http://opposedforces.com/parts/legac..._transmission/

Aftermarket Spare Parts:

Raybestos Catalog (Ctrl+F, type in Subaru, and there is a 5 speed EAT listing of products towards the bottom of the PDF) http://www.raybestospowertrain.com/p...os_catalog.pdf

RE5405A Spare Parts (many are interchangeable with Subaru 5eat) http://www.automaticchoice.com/Catalogue/re5r05a.pdf
Courtesy of rubberman.

Replacement solenoids, Repair manual (claims full teardown/rebuild instructions for RE5R05A):
http://www.makcotransmissionparts.com/RE5R05A.html
Courtesy of rubberman.


Rebuild Kits:

AutoTransSpecialists $340 + Ship http://www.autotransparts.com/cart.p...t_detail&p=891
This is a 7-bay trans shop in NJ, who get their rebuild kits from Precision International. I called them and talked to a head tech who is looking into getting thinner steels and maybe thinner clutch packs in order to fit more of them in. More clutches = more grip.
See the 5eat rebuild kit section from Precision International here bottom of page 53 http://www.transmissionkits.com/catalogs/fknd.pdf
See the 5eat individual parts section on page 319 http://www.transmissionkits.com/catalogs/PI_Parts.pdf

IPT $830 + ship http://www.importperformancetrans.co...-kit-1717.html

Alto (jump to PAGE 416) http://www.altousa.com/images/upload...iveCatalog.pdf
For reference, the different Alto kit levels http://www.altousa.com/am/automotive

Makco http://www.makcotransmissionparts.com/5EAT.html


Additional Info:

5EAT manual from the 2006 Nissan 350Z: http://www.myzroadster.com/files/200...0manual/AT.pdf
Courtesy of Apex-XT

Titan forums (several pdf's with some useful part info & a few recommendations from a trans shop for what to look/watchout for, adjust, etc:
http://www.clubtitan.org/forums/showthread.php?t=30192
Courtesy of rubberman

An exploded view of the Subaru 5EAT
http://www.makcotransmissionparts.co...g-pdf/5EAT.pdf

An exploded view of the Jatco RE5R05A (Nissan) 5EAT (for comparison)http://www.makcotransmissionparts.co...df/RE5R05A.pdf
Courtesy of Apex-XT

Solenoid Info:
http://www.sonnax.com/system/pdfs/14...pdf?1289926276
Courtesy of rubberman

Ford DIY AT rebuild youtube series http://www.youtube.com/view_play_lis...9D572AAF5C7959

There are tons of other trans rebuild videos on youtube, but I have not found any specific to the Jatco 5eat family.

Some 350Z fluff reading http://www.freshalloy.com/forums/sho...d.php?t=150651

underground000 02-21-2011 03:12 AM

Good luck. Ive took apart and put back transmissions when I was school, easier when you try to keep track of how it came apart. You are also gonna need lots of room to lay everything out

Cant wait for a brief walkthrough or at least pics, fellow 5eat here

may do the same to if I need to in the future

rubberman 02-21-2011 06:00 AM

Good thread ClimberD! This could give us the opportunity to collectively pool all of the tech/repair info that's out there on the JATCO RE5R05A trans.
I've found a few links that provide a little more tech info (parts, function, etc):

Trans Spring Compressor tool (seems to be something like this...):
http://store.boxwrench.net/KD-Tool-2...-DVD_p_84.html

Titan forums (several pdf's with some useful part info & a few recommendations from a trans shop for what to look/watchout for, adjust, etc:
http://www.clubtitan.org/forums/showthread.php?t=30192

Solenoid Info:
http://www.sonnax.com/system/pdfs/14...pdf?1289926276

Replacement solenoids, Repair manual (claims full teardown/rebuild instructions):
http://www.makcotransmissionparts.com/RE5R05A.html

Parts:
http://www.automaticchoice.com/Catalogue/re5r05a.pdf

rao 02-21-2011 06:28 AM

Sucker :lol:

I am not sure that I would buy a rebuild kit until you know what you want to replace. Spend a lot of time here http://opposedforces.com/parts/legac..._transmission/ to see what parts are available from Subaru.

Also, while you will need some of the specialized tools, a lot of times you don't so spend a lot of time studying the service manual - it will tell you exactly what to do and DO NOT skip ANY words - it is translated so it reads weird, but there isn't a lot of extra stuff in there so make sure you understand what they are saying or you will miss things.

Apex-XT 02-21-2011 07:53 AM

Way to go ClimberD!

I'm in. I'll give it a go as well. I'm researching kits at the moment and your lead to Alto looks pretty good. They have a wide variety of kits. I'll give them a call on Tues to go into variations and pricing. Anyone up for a group buy?

On another note, I used FreeSSM to reset the learned memory (Memory 2) on the 5EAT and took it for a drive. The shift personality did change. I have to drive it a bit more for it to relearn. Then we'll see whether that solves anything.

BAC5.2 02-21-2011 07:57 AM

I've rebuilt more than my fare share of manual transmissions, but never a 5EAT.

Absolutely the most critical thing to do on disassembly and reassembly, is to measure EVERYTHING. If you don't have a high quality digital caliper, get one. The very last thing you need to do is get the trans apart, rebuilt, and put back into the car only to find out that something is binding.

Apex-XT 02-21-2011 09:12 AM

More interesting stuff....

upgraded / performance valves for a valve body rebuild. Note the Instructions link...

http://www.sonnax.com/product-lines/...ion/parts/1944

(source:http://www.clubtitan.org/forums/show...t=30192&page=3)

and this info on the 5EAT implementation in the 2006 Nissan 350Z: http://www.myzroadster.com/files/200...0manual/AT.pdf

and finally, an exploded view of the Jatco RE5R05A 5EAT - what a monster! http://www.makcotransmissionparts.co...df/RE5R05A.pdf

ClimberD@HexMods 02-21-2011 05:33 PM

Hey everyone, thank you for all the replies. It is a lot to digest, so it will take some time before I can reply individually.

But in order to steer this a bit more the right way, I just wanted to comment that the Nissan/Jatco RE5405A 5eat and the Subaru 5eat are in fact a little different in the main case (my bad). By comparing this
Quote:

and finally, an exploded view of the Jatco RE5R05A 5EAT - what a monster! http://www.makcotransmissionparts.co...df/RE5R05A.pdf
vs the blowouts I have seen for the Subaru 5eat, I see now that SOME of the MAIN CASE INTERNALS are different. For example, there is a band for the front drum in the RE5405A, which I have never seen in LGT 5eat blowouts.

However, many parts are still the same.
Example, if you find that you only burned up the "High, Low & Reverse Clutch" (long name for one single assembly), then you could buy this Nissan/Subaru 5eat interchangeable part from Raybestos http://www.raybestospowertrain.com/p...an/R573575.pdf

All the part numbers for each "clutch pack" assembly are right where Rao said:
http://opposedforces.com/parts/legac..._transmission/

Thus, a RE5405A kit would leave you with extra pieces and missing pieces. Just an FYI so I don't mislead anyone about that any longer.

ClimberD@HexMods 02-21-2011 05:46 PM

Quote:

Originally Posted by Apex-XT (Post 3283942)
and this info on the 5EAT implementation in the 2006 Nissan 350Z: http://www.myzroadster.com/files/200...0manual/AT.pdf

This thing is a freaking gold mine. It is almost exactly the same format as the LGT version, but at first glance it explains all the gaps that are left in the Subaru 5eat version.

I need to reverse engineer all the stock TCU settings so I can implement them in a stand-alone TCU, and this manual may save a lot of trouble.

ClimberD@HexMods 02-21-2011 11:54 PM

Alright, first post underwent major update. And my wife has "given me" a small corner of the apartment to do this, since I gave up my garage for uptown life.

planelazy 02-24-2011 07:33 AM

Quote:

Originally Posted by ClimberD (Post 3285002)
Alright, first post underwent major update. And my wife has "given me" a small corner of the apartment to do this, since I gave up my garage for uptown life.

I'm in the same boat... except I'm not uptown, but my apartment is on a golf course :D

That's why I'm going to rent out a 10x15 garage for a year or so.. it'll cost me only $60/mo

BAC5.2 02-24-2011 08:29 AM

Quote:

Originally Posted by planelazy (Post 3287876)
I'm in the same boat... except I'm not uptown, but my apartment is on a golf course :D

That's why I'm going to rent out a 10x15 garage for a year or so.. it'll cost me only $60/mo

Really?

Does it have a lift?

ClimberD@HexMods 02-24-2011 10:58 AM

Quote:

Originally Posted by planelazy (Post 3287876)
I'm in the same boat... except I'm not uptown, but my apartment is on a golf course :D

That's why I'm going to rent out a 10x15 garage for a year or so.. it'll cost me only $60/mo

Funny, $60/mo is what I pay for a 10x10 climate controlled storage unit to hold all our nice junk we have no room for. Can someone PM me if you know how to sell 1980s art at a decent price without too much trouble?

Anyways, great move on the garage. Can't fit a car in there though.

ClimberD@HexMods 02-25-2011 03:05 PM

I called Fred Beans Parts. They do not offer a "rebuild kit" or anything like that, but they will sell individual clutch assemblies or random parts. The Subaru FSM says each clutch assembly cannot be disassembled. This is of course not true. You need a spring compressor and a snap-ring plyers, and then each one can come apart.
Instead, Subaru sells individual pre-assembled clutch packs (ex: Direct clutch assembly for $~300).

Also if you are like me and might have burned up your torque converter clutch, a new torque converter is $509. Many shops can cut open the existing torque converter, replace the clutches, and perhaps braze the fins for around that cost or somewhat more (though we really don't have an issue with the torque converter fins folding over).

ClimberD@HexMods 02-25-2011 04:32 PM

Updated 1st post with Precision International as a rebuild kit manufacturer distributed by this shop named AutoTransSpecialists.

I would love to know the quality and performance of the overhaul kits from each of these companies.


All times are GMT -6. The time now is 04:47 AM.


LegacyGT.com