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Old 06-17-2013, 05:15 PM   #151
Muzza80
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Hi all,
I'm from the UK and have this exact issue on my 2006 WRX.

I had to get the bearings from the US as Subaru UK wanted 255 for the 4 of them! ($400!) so I picked them up delivered with the oil seal and also the transfer case gasket for 120 delivered, great!

Regarding the transfer case cover, I got a gasket for it? It's a very thin paper type gasket but it's the right one according to everything the dealer can find on their system but I'm just wondering why nobody has used this and instead goes for the threebond liquid gasket?

GASKET CASE R - Part#: 32145AA030

Is there any reason I should not be using this pre-made gasket?

Thanks!
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Last edited by Muzza80; 06-19-2013 at 12:41 PM.
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Old 06-19-2013, 12:42 PM   #152
Muzza80
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Quote:
Originally Posted by Muzza80 View Post
Hi all,
I'm from the UK and have this exact issue on my 2006 WRX.

I had to get the bearings from the US as Subaru UK wanted 255 for the 4 of them! ($400!) so I picked them up delivered with the oil seal and also the transfer case gasket for 120 delivered, great!

Regarding the transfer case cover, I got a gasket for it? It's a very thin paper type gasket but it's the right one according to everything the dealer can find on their system but I'm just wondering why nobody has used this and instead goes for the threebond liquid gasket?

GASKET CASE R - Part#: 32145AA030

Is there any reason I should not be using this pre-made gasket?

Thanks!

Anyone?
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Old 06-19-2013, 04:26 PM   #153
Ryan314
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You don't need it. We used gasket sealer on mine with no problems.
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Old 06-20-2013, 04:03 PM   #154
Muzza80
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Quote:
Originally Posted by Ryan314 View Post
You don't need it. We used gasket sealer on mine with no problems.
Thanks for the reply.

I get that but I guess my point is why do they make a gasket at all if you're supposed to use Threebond? I have the gasket and will use it if it will work, saves waiting 24 hours with my car on stands.
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Old 06-23-2013, 06:31 PM   #155
Muzza80
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So I did mine this weekend.

Started it Saturday evening and took me about 2 and a half hours to get the car jacked up and everything stripped off then about another 4 hours today to remove the old bearings, replace them and assemble everything. I was working alone under axle stands which made things pretty tricky.

For the record you DONT need a bearing press at all, I put the shafts in freezer for a hour and the bearings in the oven at 120C for 10 mins the bearings literally dropped on to their seats. The centre diff bearing came off and back on very easily with a brass drift and a few taps with a hammer.

I found the bearing race inside the transfer box was hard to get in, access is tight and it took a while with the hammer and brass drifts to get it seated but got there eventually.

I almost had myself convinced that I'd miss-diagnosed the noise as my bearings all looked ok to be honest, there was no obvious deterioration to be seen but thankfully I continued and the noise is gone, very pleased
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Old 06-25-2013, 01:28 AM   #156
Hellchaser
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I used this website for part numbers: 2004 sti 6spd

http://opposedforces.com/parts/impre...llustration_1/

I just ordered part numbers:

806245030 /bearing with flange x1
806417020 /needle bearings x4
806330062 /cone bearing x1
806330061 /cup for above bearing x1
806322032 /cone bearing x1
806322031 /cup for above bearing x1
806735210 /oil seal for transmission to driveshaft

$200 total.

Now I can't wait for it to get here. Good thing I have 2 cars. Hopefully me & my buddy can complete this same day, if not ill pull an all-nighter
Correct me if I ordered wrong parts. I was researching for like 4 days straight. This thread is awesome!
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Old 06-25-2013, 10:10 AM   #157
klinebau
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Quote:
Originally Posted by Muzza80 View Post
Hi all,
I'm from the UK and have this exact issue on my 2006 WRX.

I had to get the bearings from the US as Subaru UK wanted 255 for the 4 of them! ($400!) so I picked them up delivered with the oil seal and also the transfer case gasket for 120 delivered, great!

Regarding the transfer case cover, I got a gasket for it? It's a very thin paper type gasket but it's the right one according to everything the dealer can find on their system but I'm just wondering why nobody has used this and instead goes for the threebond liquid gasket?

GASKET CASE R - Part#: 32145AA030

Is there any reason I should not be using this pre-made gasket?

Thanks!
I didn't look up the part number, but from your description, I believe this is the gasket that goes between the main case and transfer case. As stated previously, there is not supposed to be a gasket between the transfer case and extension case (back cover).
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Old 06-30-2013, 05:27 PM   #158
Hellchaser
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I can't connect the case back to the transmission. I've tried everything. I am so frustrated I threw a wrench at my car. I stayin up all night until it gets done
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Old 01-10-2014, 11:49 PM   #159
bkrathwohl
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Well as of Monday I started having some terrible noises from my transmission. After reading this thread I had decided to get a low mile center diff and set of bearings.

Well tonight I actually pulled the rear half of the transmission off and this is what I got:




The snapring had failed and was just demolished in those gears. There is about an inch left of the snapring that I was able to recover. Chances are there are bits of metal in other parts of the transmission but I can't rip the trans out of my car right now as its my DD. Luckily my roommates brother works at a Subaru shop and they had a junk transmission missing first and second. I asked if he could get the transfer drive and driven shafts as well as the shims and they said 50 bucks for them, and they will even put on my new bearings. So that is my day tomorrow.
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Old 01-11-2014, 07:29 AM   #160
ride5000
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holy hell!
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Old 01-11-2014, 11:33 AM   #161
bkrathwohl
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Here are the revised part numbers for the bearings:

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Old 02-08-2014, 11:42 PM   #162
Kng Nothg
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As many have said before me, this thread is/has been a great help. I've decided to tear down mine tonight.

This is from the transmission that was in the car. I purchased another used transmission and may perform this to that one as well. Wish i had ran across this thread before I bought this other trans.

Many thanks to those in this thread. those who provided pics, tips, and part numbers. Here is the damage from mine...











-
--
---
Would anyone recommend replacing the bearings on the front diff as well? Since I already have it torn down this far...

::EDIT:: I may have to end up replacing the center diff as well... the unit doesnt appear to spin freely. Taking a bit of force to spin. Perhaps this is what caused the damage from above.
-Rob

Last edited by Kng Nothg; 02-08-2014 at 11:48 PM.
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Old 02-09-2014, 06:52 AM   #163
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The center diff shouldn't spin without an incredible amount of force. Unless you're talking about the bearing, which should e replaced. You might not need to replace the diff.
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Old 02-09-2014, 10:42 PM   #164
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Quote:
Originally Posted by drewmob View Post
The center diff shouldn't spin without an incredible amount of force. Unless you're talking about the bearing, which should e replaced. You might not need to replace the diff.
Appreciate the reply. I wonder what caused the failure. The bearings seem fine (I will be replacing them). as well as the 2 on the front diff.
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Old 03-18-2014, 07:03 PM   #165
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Quote:
Originally Posted by klinebau View Post
I didn't look up the part number, but from your description, I believe this is the gasket that goes between the main case and transfer case. As stated previously, there is not supposed to be a gasket between the transfer case and extension case (back cover).
Incorrect as a blanket statement
Not sure on a 2006 wrx BUT there are 4 gaskets on 95-99 Legacys. The rtv stuff is just easier to use. BUT remember..that rtv that you see ooozing outside the case is ALSO ooozing INSIDE the case. So if you have any oil passage or flow holes nearby the rtv flow area..one is better off with a gasket.
And one should not use rtv AND a gasket. use one OR the other.
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Old 03-19-2014, 02:13 PM   #166
klinebau
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Quote:
Originally Posted by Kng Nothg View Post
Appreciate the reply. I wonder what caused the failure. The bearings seem fine (I will be replacing them). as well as the 2 on the front diff.
Some of those pieces look like the "snap ring" from the back of the center diff. This ring holds the center diff together and has been known to separate. When it comes in contact with the gears, it destroys them.
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Old 03-24-2014, 10:00 AM   #167
Kng Nothg
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Default You got it

Totally missing the snap ring. Good call!

Going to post up a WTB now for those broken parts!
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Old 03-24-2014, 02:51 PM   #168
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This forum is awesome. My '07 Impreza 2.5i just started making the whirring/whining noise last week. I'll be propping it up on jack stands and using the stethoscope to confirm, but it looks likely that I'll be replacing the center diff bearings.

Big thanks to those that have taken the time to post all the info, especially with the pic by pic tutorial.
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Old 03-28-2014, 06:25 PM   #169
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Quote:
Originally Posted by Muzza80 View Post
For the record you DONT need a bearing press at all, I put the shafts in freezer for a hour and the bearings in the oven at 120C for 10 mins the bearings literally dropped on to their seats. The centre diff bearing came off and back on very easily with a brass drift and a few taps with a hammer.
This is brilliant by the way. I tried it myself and they slide on with absolutely no effort. Thanks for saving me from buying a HF press! For those of us that use the outdated American system, 250F works nicely.
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Old 04-06-2014, 03:34 PM   #170
mtg
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I have my car up on stands, using the stethoscope for diagnosis, which sure seems to be the same center diff bearings referenced in this thread.

Anyway, my shifter rod linkage seal has also apparently been leaking oil, which looks common as well. Anybody think there's a correlation between that seal going bad and subsequent center diff bearings going bad not long after?

Reference thread of shifter rod linkage seal: http://forums.nasioc.com/forums/show...1118420&page=2
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Old 04-06-2014, 08:30 PM   #171
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No, they seep from day 1 and failures don't have correlation with fluid level or maintenance frequency.
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Old 04-26-2014, 12:35 PM   #172
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Would these center bearings cause deceleration grinding noises, which are mainly heard in 3rd and 4th gear around 2k RPM? My WRX has been making nasty sounding grinding noises on decel only since I bought it last year. The sound seems to emanate directly from under the shifter. Setting the rear tire pressures 6-8 psi lower than the front helps to reduce the noise. Depressing the clutch also stops the noise instantly. It's not a whine, it's a pronounced GRIND! I do have a light weight flywheel, and fresh clutch from Exedy (the OEM one). Any opinions or general input would be greatly appreciated.
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Old 04-27-2014, 04:57 AM   #173
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^on the same page as Bryan82, also have whining when acceleration
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Old 04-27-2014, 08:50 PM   #174
mtg
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So I have my car up on stands, and have everything out of the way, trying to remove the transfer case/center diff cover with the transmission in the car.

All bolts are out, the seal is broken, but I can't get the cover off to save my life. I've tried carefully prying with a screwdriver and hitting with a hammer & punch and a rubber mallet. This thing will not come off.

Any advice?
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Old 04-28-2014, 08:05 AM   #175
ride5000
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Quote:
Originally Posted by Bryan82 View Post
Would these center bearings cause deceleration grinding noises, which are mainly heard in 3rd and 4th gear around 2k RPM? My WRX has been making nasty sounding grinding noises on decel only since I bought it last year. The sound seems to emanate directly from under the shifter. Setting the rear tire pressures 6-8 psi lower than the front helps to reduce the noise. Depressing the clutch also stops the noise instantly. It's not a whine, it's a pronounced GRIND! I do have a light weight flywheel, and fresh clutch from Exedy (the OEM one). Any opinions or general input would be greatly appreciated.
decel only noises with lightweight flywheels are very common.

basically you're hearing the gear lash due to compression braking.
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