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10-20-2015, 04:14 PM | #226 |
Scooby Newbie
Member#: 316535
Join Date: Apr 2012
Chapter/Region:
TXIC
Location: The Woodlands, TX
Vehicle:2007 WRX (Sold 2.0i) Silver |
If it's only an hour of work I'll gladly pay someone an hour of labor to do it right...
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10-20-2015, 04:16 PM | #227 |
Scooby Guru
Member#: 67004
Join Date: Jul 2004
Chapter/Region:
SCIC
Location: (818) 300k+ ej205 ppg 5mt
Vehicle:02 vf30 pnp wagon silver and cf |
They will do a full bearing rebuild and charge $800+
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10-20-2015, 04:21 PM | #228 |
Scooby Newbie
Member#: 316535
Join Date: Apr 2012
Chapter/Region:
TXIC
Location: The Woodlands, TX
Vehicle:2007 WRX (Sold 2.0i) Silver |
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10-21-2015, 12:50 PM | #229 |
Scooby Guru
Member#: 67004
Join Date: Jul 2004
Chapter/Region:
SCIC
Location: (818) 300k+ ej205 ppg 5mt
Vehicle:02 vf30 pnp wagon silver and cf |
Ok think about this. Your bearings got ground up in the tail housing. It's making noise now, bringing it to your attention that there is a problem. So that metal has to be going some where in your trans. So the shop will tell you. While your here we need to replace all the bearings that were damaged. So your bill just massively grew by hundreds because you didn't find it before other bearings were damaged. You may not hear all the bad bearings. But they were damaged once the other ones started making noise. So the problem with the wrx and sti. The trans is so long. When the torque is put through the tail housing part it tends to flex and put a hard load on those bearings causing bearing flex and damage. It might start off as pitting and crumbles from there. The more torque the more the problem grows.
So if your a reasonable mechanic you might have caught this early. So this thread helps those who are a reasonable mechanic, who caught the problem early. As well have some skill to pull it off. So while this is an easy fix if you have gone to far then your other bearing now have to be replaced. With that being said. This is where things get complicated. As the front t of the trans requires special tools and exact measurements to get this right. So this might cover trans repairs a. It for those questioning doing this repair. In my case it was a bandaid that gave me another 6 months before the front bearings were finished. So hopefully this will cover many questions people have about trans bearings repairs. Note if you have a carbon drive shaft this sound will be drastically muffled and you may miss hearing the warning sounds. |
01-04-2016, 04:21 PM | #230 |
Scooby Newbie
Member#: 421504
Join Date: May 2015
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I'm dealing with this issue on my '06 Legacy GT. I don't think I'd be able to do this myself, and am unsure of how much damage has occurred, so I'm trying to decide what the best course of action would be...
Backstory Transmission was rebuilt at 86,000 miles 3 years ago (lost 5th gear). Sold to previous owner at 110,000 miles, I purchased at 125,000 miles 6 months ago. I had the transmission fluid changed at the beginning on December. https://i.imgur.com/Pc3OQja.jpg A few weeks later, I heard some speed related scraping noises that went away after a few minutes. My first thought was wheel bearing. On 12/26, I start hearing a whining noise, like a wheel bearing would make. It changes pitch and intensity as wheel speed increases, no changes on acceleration, deceleration, steering, gear change, or neutral. I was hoping it was a wheel bearing, but the fact that it didn't change when steering had me concerned. Here's a video of the noise. In the following days, the noise would come back after about 10-15 minutes of driving. Took the car into my shop on 12/31 and had them check it out, the sound is coming from the center differential. On the way there, the noise didn't seem to come back while I was on the thruway, but when I got on the side roads, I could hear it again. The range and pitch of the noise/speed seems to have changed. Diagnosing I'm not sure exactly what is causing this noise. My main guess is the rear bearing on the transfer driver gear (output shaft) of the center differential. A lot of the people with center diff noise say that the noise is only during acceleration or deceleration, but that's not what my problem is. Decision Time They recommended that I purchase a used transmission and swap it out. Their rationale is that it's highly unlikely that one bearing is the only issue with the transmission, and that doing the service might end up being a waste of money. I've been doing a bit of research online, and this seems like a somewhat common issue. People are writing up DIY center differential bearing replacement guides. LegacyGT.com guide The only used transmission in the area would cost $1,400, free delivery, 30 day warranty (parts only), and has 114,000 miles. Labor would be about $650. If it's just the center differential bearings, parts would be about $175, labor about $400. If the differential's viscous coupling is damaged, the cost would end up around $1,100. To just open the center differential and see what it looks like would be about $250. I'm leaning towards having the shop open up the differential and proceed from there. If it looks like there are worse problems then just the bearings, I'll purchase the local transmission, or order one with less miles and pay shipping, then have them install it. Questions What would you do if you were in my shoes? With the noise being consistent with the wheel speed, and not changing depending on other factors, would that lead you to believe that it's the differential bearings, or the differential's viscous coupling? I would think if there's noise on load, that it's the viscous coupling, whereas if the noise happens all the time, it's a bearing. Thanks in advance for any advice you can give! Last edited by adwinistrator; 01-04-2016 at 04:42 PM. |
01-04-2016, 04:32 PM | #231 |
Scooby Guru
Member#: 67004
Join Date: Jul 2004
Chapter/Region:
SCIC
Location: (818) 300k+ ej205 ppg 5mt
Vehicle:02 vf30 pnp wagon silver and cf |
Could also be the transfer gears. Being I don't see chunks on the drain plug makes me think it's something other then the bearing or you caught it super early.
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01-04-2016, 05:51 PM | #232 |
Scooby Guru
Member#: 32792
Join Date: Feb 2003
Chapter/Region:
NESIC
Location: lincoln, ri
Vehicle:2003 GGA MBP 12.9 / 105+ |
how mechanically inclined are you? do you have access to basic tools?
years back i was certain my cdiff/xfer bearings were going out. speed dependent noise, no relation to gear or rpm, not a wheel bearing or cv joint. sounded like it was coming from directly aft of and beneath the shift lever. bought the replacement bearing set, got the car in the air, removed the tail housing, inspected the transfer gears and... they were utterly perfect. so everything got buttoned back up again. then with the car still on jackstands i put it in 5th gear and carefully crawled underneath to listen to where the whine was coming from. lo and behold it was the snout bearing in the rear diff. just decided to give up the ghost, had done all maintenance over the last decade myself and nothing of note ever. sourced a rear diff from a guy who went sti for $50 iirc. swapped it in and problem solved. for a **** of a lot less than $2k for a new tranny... |
01-04-2016, 06:34 PM | #233 |
Scooby Specialist
Member#: 330625
Join Date: Aug 2012
Chapter/Region:
NESIC
Location: MA
Vehicle:2006 WRX WRB |
If I were you I'd pull the driveshaft out and check the U joints. I had the exact same noise you describe and I ended up changing the bearings out even though they didnt have any visible issues, since I already opened it up and bought the parts but the drive U joints were shot on my driveshaft.
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01-05-2016, 03:58 PM | #234 |
Scooby Newbie
Member#: 418749
Join Date: Apr 2015
Chapter/Region:
SWIC
Location: Albuquerque, NM
Vehicle:2002 RS PSM |
I was having a similar problem for a while, it was driving me crazy. I recently replaced my U joints and for now it seems to have solved the problem.
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01-09-2016, 08:37 AM | #235 |
Scooby Guru
Member#: 108051
Join Date: Feb 2006
Chapter/Region:
AKIC
Location: Oneonta, NY
Vehicle:2005 WRX STi WRB |
Help with Center Diff Transfer Drive Gear Bearing R&R
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01-09-2016, 09:49 AM | #236 | |
Scooby Guru
Member#: 32792
Join Date: Feb 2003
Chapter/Region:
NESIC
Location: lincoln, ri
Vehicle:2003 GGA MBP 12.9 / 105+ |
Quote:
I guess when you "repair" things they never fail again? that 50 bucks was some of the best money i've ever spent, my friend. |
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01-09-2016, 04:07 PM | #237 |
Scooby Guru
Member#: 108051
Join Date: Feb 2006
Chapter/Region:
AKIC
Location: Oneonta, NY
Vehicle:2005 WRX STi WRB |
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01-20-2016, 08:22 PM | #238 |
Scooby Specialist
Member#: 344329
Join Date: Jan 2013
Location: Summit County
Vehicle:2008 Wrx, 6mt |
Finally got around to pulling the tail shaft off my 2004 6mt, and replaced the 4 bearings I could get to.
Its winter storming out, and traffic was creeping along at 20 MPH, so I couldn't really get a good test run. at least it still shifts haha. It was all pretty straight forward, except for those two 1/2 needle/roller bearings that sit on the center diffs shaft-UGH-what a pain sliding the tail shaft back on with those things popping off every time. Finally it just popped on, wonder if they just fell off-hope not. I don't ever want to do that again, just because of those two 1/2 bearings… 9 hours total. |
01-20-2016, 10:10 PM | #239 |
Scooby Guru
Member#: 108051
Join Date: Feb 2006
Chapter/Region:
AKIC
Location: Oneonta, NY
Vehicle:2005 WRX STi WRB |
Use a tacky assembly lube like Lucas they'll stay in place better.
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01-21-2016, 07:05 AM | #240 | |
Scooby Specialist
Member#: 344329
Join Date: Jan 2013
Location: Summit County
Vehicle:2008 Wrx, 6mt |
Quote:
Drove it around a bit more on the highway. I had a bearing noise/growl on deceleration with any level of center diff lock. It appears to be gone now |
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02-21-2016, 12:20 PM | #241 |
Scooby Newbie
Member#: 140297
Join Date: Feb 2007
Chapter/Region:
RMIC
Location: Denver, CO
Vehicle:'07 2.5i Wagon 5MT Crystal Gray Metallic |
Here we go again
I had this issue just about exactly two years ago @100k miles, fixed it, and now @120k miles, the whining is back.
I think I noticed a pattern in what has accelerated the wear, based on the timing of both times the whining started. Has anybody else picked up on a pattern or know the root cause? |
02-21-2016, 12:53 PM | #242 |
Scooby Guru
Member#: 67004
Join Date: Jul 2004
Chapter/Region:
SCIC
Location: (818) 300k+ ej205 ppg 5mt
Vehicle:02 vf30 pnp wagon silver and cf |
Root of the problem is 3 things. 1, to much power going through it. 2, you have metal shavings in the trans still. Or 3 you did something to the bearings when installing.
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02-21-2016, 11:11 PM | #243 | |
Scooby Newbie
Member#: 140297
Join Date: Feb 2007
Chapter/Region:
RMIC
Location: Denver, CO
Vehicle:'07 2.5i Wagon 5MT Crystal Gray Metallic |
Quote:
Incorrect installation is certainly a possibility, but I took my time to do it to the best of my skill. The design is known to do this, so there's likely to be something other than (or in addition to) a mistake of mine at play. The pattern I noticed is cold weather. A couple years ago, my driving patterns changed to include parking outside, and my drive home from work includes an interstate entrance ramp about 100 feet from my office. The whine is worst when transmission is cold, so it seems either as the parts expand, or as the oil thins and reaches the back of the trans easier, the noise reduces. I'm wondering if anybody else has noticed a similar trend. |
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04-12-2016, 11:25 PM | #244 |
Scooby Newbie
Member#: 140297
Join Date: Feb 2007
Chapter/Region:
RMIC
Location: Denver, CO
Vehicle:'07 2.5i Wagon 5MT Crystal Gray Metallic |
I'm getting ready to replace my bearings for the second time and want to verify the shim thickness needed. Last time, whatever was in there from the factory went back in there.
Does anybody know what to measure and what the spec is supposed to be to determine shim thickness? |
04-17-2016, 01:06 AM | #245 | |
Scooby Newbie
Member#: 140297
Join Date: Feb 2007
Chapter/Region:
RMIC
Location: Denver, CO
Vehicle:'07 2.5i Wagon 5MT Crystal Gray Metallic |
Quote:
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05-07-2016, 11:13 AM | #246 |
Scooby Guru
Member#: 67004
Join Date: Jul 2004
Chapter/Region:
SCIC
Location: (818) 300k+ ej205 ppg 5mt
Vehicle:02 vf30 pnp wagon silver and cf |
Never noticed shims on my 02. But just do it the same way it was before.
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05-11-2016, 04:24 PM | #247 |
Scooby Guru
Member#: 32792
Join Date: Feb 2003
Chapter/Region:
NESIC
Location: lincoln, ri
Vehicle:2003 GGA MBP 12.9 / 105+ |
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10-22-2017, 01:35 PM | #248 |
Scooby Specialist
Member#: 453872
Join Date: Sep 2016
Vehicle:2005 wrx wagon 48w |
im about to do this in the next week or so. my wrxy sounds like a diesel ford with single mass flywheel when i let off the gas.
i have a download of the FSM for 2005 (my year car). the shim formula for the tapered roller bearings seems to create some interference which actually makes sense. you subtract distances giving the actual clearance, then it says ADD .2 to .3 mm which gives you a shim thicker than the space measured. but people in this thread are saying you need some play? i have never seen any tapered roller bearing system that had any play in it unless it was shot. they usually (always) have preload. so what is the correct thing here? |
11-29-2017, 08:29 AM | #249 |
Scooby Newbie
Member#: 403329
Join Date: Oct 2014
Vehicle:2003 wrx stage 3 |
Just Read through this thread. I am rebuilding my 5MT right now and am doing the transfer gear bearings as a preventative maintenance since I am in there replacing the center diff and 5th gear needle bearing in input shaft bearing.
My symptoms where car hoping and binding when warmed up (center diff) and a rattling bearing noise at a stand still that would go away when the clutch is disengaged. My throwout and pilot bearings are fine, and they would only make noise when the clutch is disengaged anyway, my problem was the opposite. My question is: How do people get the transfer gear (driven) bearing races out of their housings (ext. case and cover), they are a blind hole. Is warming the case enough? special puller? Cut it out? Thanks! |
11-29-2017, 08:54 AM | #250 |
Scooby Newbie
Member#: 433950
Join Date: Nov 2015
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I think mine just jiggled out. Maybe tap the back with a rubber mallet a bit.
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