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Discussion Starter · #1 · (Edited)
Well, after much procrastination, I eventually got around to swopping the leaking half-shaft oil seal on the drivers side.
It's a biggish job only insomuch as most of the nuts and bolts are large sized and, if your
Matiz is like mine, quite rusted (but mine were also covered in Waxoyl) so very messy!
The first thing was to get the car jacked up, onto axle stands and the nearside wheel off. Then I had to put together
a "plug" spanner from assorted sockets and extensions to reach the gearbox filler and drain plugs. I used 1/2" extensions, long and short, and a 12mm, long reach socket into which I put the hex end of the gearbox plug (it's a 3/8" square) secured with gaffer tape and total length about 2 feet! I still needed to use a power bar to crack both plugs as they were secured with blue loctite! What a job. The gearbox oil was then drained.
The suspension components came off after much huffing and puffing. I slackened the track rod end, but then left it on until I'd slackened the rest. Next I took off the complete caliper with the linings held in place with an expanding brake tool and left it on a large plant pot, still connected by the brake hose.
I then took off the ABS sensor and attacked the two large bolts which hold the hub onto the strut, copper easing them for the future! Next was the small ball joint going into the hub at the bottom. The hub came off after a bit of jiggling and a screwdriver between the ball joint and the lower suspension arm. The halfshaft eventually slid out with a little help from a large screwdriver between it and the transaxle casing to pry it out. It eventually it all went back together with the new seal and lots of copper eased nuts and bolts. Putting it back in is a little tricky due to limited space. I used the time-honoured socket and hammer method..
Seal info. I eventually used a 35x52x10mm seal from Simply Bearings, Leigh, UK.
1921
1922
 

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Discussion Starter · #2 ·
Not sure why the photos are doubled up, but couldn't find a way to delete them.
 

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Excellent job. Where did you source the oil seal from ?(for the benefit of others).

Also like your 1970's/80's HiFi set up, much like my own, a mixture of Akai, Sony and Wharfedale! That tape deck looks like a 1982 Sony.

I think the double images come from clicking thumbnail and full picture. I could find no way of deleting duplicates when I did that.
 

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Discussion Starter · #4 ·
Thanks Metro 1000.
I've ammended the post to include the oil seal info.
The tape deck is actually a Sharp, and the tuner amp you can see on the bottom is a (retired) Rotel! I've also got Wharfedale Denton speakers, a Cambridge CD player and Yamaha RXV350 home cinema type tuner/amp. All ancient but functioning!
 

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Good job @Bikerpete51 Don't mean to be nit picky but have to ask, when you wrote ".... assorted sockets and extensions to reach the gearbox filler and drain plugs. I used 3/4" extensions, long and short....." surely you don't mean 3/4" drive, the ones I see look like 1/2" drive or maybe even 3/8" drive? But well done and good with the photos, makes all the difference.
 

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Discussion Starter · #6 ·
Good job @Bikerpete51 Don't mean to be nit picky but have to ask, when you wrote ".... assorted sockets and extensions to reach the gearbox filler and drain plugs. I used 3/4" extensions, long and short....." surely you don't mean 3/4" drive, the ones I see look like 1/2" drive or maybe even 3/8" drive? But well done and good with the photos, makes all the difference.
Doh!
Didn't I put 1/2" drive? ;)
 

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Discussion Starter · #8 ·
Victor, having been involved with the printing industry for many years I agree that a fondness for alcohol runs throughout the industry. It may be too much time spent around alcohol damped printing presses.. 😒
 

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Discussion Starter · #9 ·
Further update:
Well after driving my Matiz with its new oil seal I got home and looked underneath to see if it was sealing, and...
Oil was coming out a lot faster than before!
I've pulled it apart again and looking at the seal it's no wonder why. The new seal was 35x52x8mm but compared side by side shows the difference. The original seal that I took out has a 9.5mm width, plus an additional sealing ring so it's actually 2 seals, one is just over 35mm and the inner ring is actually more like 34. I'm no seal expert so I've ordered one which is actually 10mm, not sure if this one will have the "double ring" like the original. If not I'll put the old one back in.
I think the real reason it's started leaking in the first place though is excessive wear in the transaxle bearing on that side.
I'm undecided at the moment whither to get shut of the car for not much money, or buy a used gearbox and try and fit that in. I'm just wondering what could have caused my original to go, because the gaskets show that the 'box has been off before, so this seems to be the second time there's been a problem with it. Watch this space...
 

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I feel gutted for you mate, all that work for nowt basically. If the bearing is knackered then it's gonna go again but I hope you get better luck with the wider seal and give you a bit more time.
 

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Discussion Starter · #11 · (Edited)
Well yesterday I received the two seals I ordered from "Simply Bearings" in Leigh. One was 9.0mm wide and has a single sealing ring at 35mm. The second was 10mm wide and has 2 sealing surfaces, both at the specified 35mm inner diameter, whereas the original seals rings were one at 34 and one at 35.2mm. I'm not sure what the purpose of this larger additional ring is but it's obviously not primarily a sealing ring.
I've fitted the 10mm seal yesterday with plenty of grease, and eased the half shaft in, all back together again and refilled with oil. Guess what, not a drip! I have ammended the post to include this seal. The original is however 35x52x9.5 which I guess might be available somewhere, but I didn't manage to find one on any of the sites I visited. Since the original seal lasted almost a year I'm hoping I have a similar period with this one to decide what to do with the car.
 

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........ I've fitted the 10mm seal yesterday with plenty of grease, and eased the half shaft in, all back together again and refilled with oil. Guess what, not a drip! I have ammended the post to include this seal. The original is however 35x52x9.5 which I guess might be available somewhere, but I didn't manage to find one on any of the sites I visited. Since the original seal lasted almost a year I'm hoping I have a similar period with this one to decide what to do with the car.
Mybe the next site you should visit is Ebay Cars for Sale:)
 

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What a nightmare. I feel for you. Maybe use the time to track down the exactly correct seal? The Matiz has been made and sold all over the place and especially in less well off countries so they must exist even if GM have abandoned us. I can't see that Indians would dump a car because of an oil seal...

I already have a list of bits to buy for my Aveo, for "stock", clutch, exhaust, lower arms, etc.. since its piling on the miles again, expected to reach 100,000 in a month or so.
 

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Discussion Starter · #14 ·
Victor, that's a definite possibility! Well at least I'm not losing oil at the moment.
Metro 1000. The seal I've got in now is doing a great job, I'm just not sure for how long. But the underlying problem is obviously the worn bearing. I need to decide if I want the challenge of swopping the box over on my driveway. Oh, and a second-hand box will be at least £150. My insurer recently told me the cars market value is only £250....
Pete.
 

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Discussion Starter · #15 ·
Well it's now started leaking with the 10mm seals, so I'm going to try to get the original seals which are 35x52x9.5mm and maybe go up a bit on the oil viscosity to minimise the leakage. I've tried lots of sites and nowhere seems to sell genuine original Daewoo or Chevrolet oil seals. Most sites just lead you to adverts for oil! Isn't there a Chevrolet dealership in the UK? Does anyone know of international sites which might sell these parts? There are millions of Matiz's on the roads (Mainly Russia and India?) as well as uk. Someone must sell them.. Any suggestions gratefully received...
 

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There are two Chevrolet dealerships in UK Virginia Water & Stockport who are primarily there to market the Corvette. You'll Find them online..
There are parts suppliers in India for Matiz. Type 'Parts for GM Matiz in India' into your search engine (ie Google) Buy Daewoo Matiz Car Spare Parts / Accessories Online India | Parts Big Boss | Parts Big Boss. Note however that even the Indian Forums express concern about availability of parts.
You have the scope to do this research.
 

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Discussion Starter · #17 ·
Thanks Ed. I'll give these links a try, although the dripping oil is only part of the problem as the bearings are now making
quite a bit of noise. I've been given a reasonable price part ex. so will have to decide..
Regards
Pete
 

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Discussion Starter · #19 ·
Ed, thanks for the link.
Looking at the dimensions, this seal is narrower than the original (8mm iso 9.5) but the cross-section looks identical to the original seal, so it might be worth a punt. I think the second, slightly wider ring is to better accomodate the slight increase in diameter on the shaft as it slightly tapers wider in section before the step, if you know what I mean. :unsure:
As an aside, I have been looking at a Kia Picanto in a local dealer, and can't help noticing how much better in design and quality it is compared to the Matiz (and more expensive!) on the other hand if i could get another 'box locally I would have another go at it just for the satisfaction..
 

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I think that the variations in the depth of the seal housing are a red herring here. It's the 35 x 52 dimensions that are the most important. You have hinted earlier that excessive bearing wear/movement may be the underlying cause, and since it keeps chewing seals I have to go along with that possibility. You can get 10 seals for about £12, non OEM of course, but who wants to keep changing seals?


Back in the day, Austin Metros leaked very badly from the driveshaft seals, and the few survivors still do! We just used to put a tray of oil granules underneath.

What did spring to mind though is the weird service requirement that Chevrolet put on the Aveo, that the gearbox oil be changed at 10,000 miles, and then every 20,000 miles thereafter. I wonder if was the case for the Matiz as well. The early oil change is suggestive of a need for "running in" and to remove debris arising from that, the subsequent ones seem to be an acceptance of vulnerability to poor/ out of grade lubrication. I say this because 50k miles is frankly very low mileage indeed.

If you are going to the trouble of pulling the gearbox, then you might just as well strip the diff down and renew the bearings, which will almost certainly be of a standard size. Been a while since I stripped and re-bearinged a gearbox though...
 
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