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Subaru Center Differential Repair (Manual)

Оценок: 48 | Просмотров: 12779
99 Forester with 268K miles. Center diff and bearing was bad. This doesn't cover the disassembly and reassembly in detail. There are other videos that do that. Frankly it's like any other job, you remove the stuff in the way to get to the problem.
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Текстовые комментарии (16)
Ethan Lau (2 дня назад)
I think I need to replace my center diff and bearing in my 2003 WRX. Above 25 mph it begins to make a whining sound that increases in volume and frequency with speed. The sound persists regardless of gear, and clutch in/out. I have not experienced binding in low speed turns however. The sound is definitely coming from the transmission area as I ran the car on a lift to listen. Based on these symptoms does this sound like the problem in the video?
Allen Hansen (2 дня назад)
Ethan Lau - This sounds like the center diff bearing. If the diff is bad it'll make noise when you turn sharply, such as in a parking lot. You should just need a bearing, gasket, and trans lube which should be about $100 verses $500 for the diff assembly. There's a couple of videos out there on how to change the diff bearing.
ShazamMafia (1 месяц назад)
Only Honda has a tranny, the rest or the cars have transmisions. Btw replacement is not a repair :)
Pablo Arthur (1 месяц назад)
Hello, that also happened to me, the problem is not the snap ring, is the ball bearing. Ball bearing goes bad, and then the Center differential is not longer rotating in the center, it destroy everything else. My center differential was intact but the two transfer gears where completely destroyed.
Allen Hansen (1 месяц назад)
As I said, my bearing was also bad. I caught it before it tore up anything else.
Renan Augusto (8 месяцев назад)
Hi mate, sorry for asking, but it's Snap Ring what's called that ring which you said that fails? I'm having the same issue you said on the video, only when parking, i hear some clec clec clec and it goes away when I'm over 10 mph more or less. It's possible to find that ring? Or some equivalent? Thanks.
Allen Hansen (8 месяцев назад)
If the bearing on the center differential is bad it'll make noise no matter if you're going straight or turning. It's more of a grinding noise that increases with speed. The reason I took mine apart was for the bearing. I (incorrectly) assumed my clunking was from a bad CV joint because it started about the same time I changed a CV with a really cheap one. It was only after I had it apart and discovered the broken snap ring that forced me to replace the center diff too. This turned out to be the cause of the clunking noise.
Renan Augusto (8 месяцев назад)
By parking I mean when i'm trying to park my car when I arrive at some parking lot, or such, got it? Parking Maneuvers, when turning the wheels, going straight there's nothing wrong. Or very low-speed maneuvers, that's when i hear the clunks. Aside from that, above 10 or 15 mph my car's absolutely fine, I don't feel any vibrations or such. That's why I'm thinking if my problem really is the whole center differential or only the ball bearing or something there... Also, thanks for the fast reply.
Allen Hansen (8 месяцев назад)
Not sure what you mean by parking? The limited slip differential has to slip when the front and rear axles are going different speeds. Unless you're going in a straight line and the front and rear tires are exactly the same circumference there must always be some slippage. But there's a great difference if you have the front tires turned to the max left or right. This is when the clunking happened. The speed didn't matter; the clunking was just faster if you drove faster. As far as I can tell Subaru doesn't sell any of the differential components separately. They describe it as a non-serviceable unit. If you have one like mine where just the spring they use for a snap ring has failed it might be possible to re-compress the limited slip unit with a press but then you'd need to find a snap ring to fit in the groove where that spring was. I threw mine away but I think that grove was narrower on the original unit so a standard snap ring wouldn't fit, which means you'd have to machine the grove a little wider. That would take a lathe. That's a lot of if's, and then it still may not work correctly when you reassemble it. I don't have those tools and I knew the snap ring would eventually break off and the parts would eventually find their way between gears so I replaced it. The real reason I tore mine apart was the bearing was bad. Hope that helps.
Shadow Builder (8 месяцев назад)
Dude! This is not a repair! This is a replacement for a broken spare part!
Shadow Builder (8 месяцев назад)
I have not yet broken thank God! But as soon as this happens, I will definitely make a video ;-)
Allen Hansen (8 месяцев назад)
Please post video of you repairing (not replacing) cage bearings.
Mick Redman (8 месяцев назад)
Mate, don't throw it out! They cost about $1600 -2k over here in Aust to replace, and are becoming rarer then rocking horse poo to find. I found that they are repairable for only a couple of dollars using 100,000 CST - 300,000 CST silicone oil "Wink wink". will cost you approximately $5 - $7 dollars to repair. Basic instructions as follow: - Prior to disassembly, weigh the complete unit eg 5.7Kg - Remove retaining clip ( the damaged one you found) - push the Viscous coupling (with your hands!), looks similar to a motorbike clutch pack - Clean out all the old silicone oil (very messy) - Weigh the complete unit again (minus the oil eg 5.6kg) and subtract from the original complete weight above. (will give you the weight of oil you removed eg 100grams). - then weight out the new silicone oil using your calculation above (100grams). Original weight of the diff minus the second weight of the diff. - place the oil into the viscous coupling and allow the oil to settle until air bubble are gone. - Drill out the staked ball seals on the top side, (inside of the retaining clip you found damaged) and tap to fit a threaded screw. - Reassemble - Life is sweet, and now I can spend that extra cash on beer ;-) I have two spare center diffs for my 99 WRX that I cycle through when needed, and have had not issues with either. Sorry if my description above was hard to understand, I've been spending my extra cash on Beer...
Allen Hansen (8 месяцев назад)
Do it anyway.
Michael Redman (8 месяцев назад)
Allen Hansen, been meaning to video a rebuild, unfortunately no-one understands our accent.
Allen Hansen (8 месяцев назад)
Good info but it's too late for me. I disassembled the unit just to see what was inside it. You're right about that old silicon goop being very messy. There were a bunch of fine wires holding things together, which I damaged so it wasn't rebuildable at that point. I think the only thing wrong with mine was the broken snap ring and the bearing, which is replaceable. I wasn't sure and new units weren't hard to come by in the US, so I just replaced it. I think the total cost with the unit, gasket, and new transmission lube was just over $500US. The next time you rebuild one you should video it for youtube. I suspect there'll be a lot of interest in doing this.

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