Omega Owners Forum
Omega Help Area => Omega General Help => Topic started by: Black Knight on 12 March 2009, 13:04:40
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Hi,
Had a rather annoying whining sound from the back end. Though it was the autobox but it's much further back and I've topped up the box fluid this morning, well...mainly poured it over myself...but there you go!
Could it be the brake shoes sticking? Don't get the noise on 'P' or 'N' but do hear it as soon as you pull away.
p.s it did have rear pads in about 1K ago.
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Is the diff pinion seal leaking at all?
the diff can whine if low on fluid.
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Is that what sits at the back end and sets the drive to the wheels??
I did notice a little oil there, amongst other places. i'll jack it up and see if I can get a pic tommorrow morning.
Big job??
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Ok, here are some photos taken at 6am this morning! Neighbours must think i'm crazy!
I've never noticed any oil dropped where I park it or anywhere else. The noise could well be the diff and it's clearly leaking oil but I'm not sure how bad a case that is compared to others??
Is it a similar top up to the gearbox sump?
What is the correct oil to use?
(http://img.photobucket.com/albums/v420/Stealthdog/RHdiff.jpg)
(http://img.photobucket.com/albums/v420/Stealthdog/LHDiff.jpg)
(http://img.photobucket.com/albums/v420/Stealthdog/Under2.jpg)
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There is a filler plug somewhere on it...I will have to have a look at the LSD one sat in my garage to see where it is...looks like its leaking quite badly,might need to get the seals sorted at some point...
Might not be any fluid on your drive if its all leaked out lol SAE 90 is what you need for the diff unless you have an LSD :y
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i would have thought perhaps EP90 oil would be nearer the mark to be honest but dont quote me as im not 100%, but cant imagine a diff running on atf ;) ;)
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just had a look in the haynes book & it lists sae 90 for top ups [unless you have LSD] in which case its a special oil from vx apparently :y
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SAE 90 is what you need for the diff unless you have an LSD :y
Thats what I said! lol :y
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sorry mutant, im still waking up & my typing is too slow as im eating readybrek at the same time, readybrek used to be good to quieten the diffs on 1.6 cortinas ;D ;D ;D
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AHA! My mig is doing exactly the same thing - whining frm the rear, with increasing pitch the faster I go.
I'd better jack the back up and have a look - at least I now know what i'm looking at. :y
EDIT: Diff oil change guide is here: http://www.omegaowners.com/forum/YaBB.pl?num=1161520937
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Thanks all, a picture does paint a thousand words, how did we ever get on before the digital age. Oh yeah, the boys learnt mechanics, girls learnt cookery!
I'm thoroughly skint after settling my final tax bill so it's going to have to be a top up for now and a hope it doesn't just piss straight out the bottom.
I read it's a T50 torx which i think I have, I can get the oil easily. Is it the same as doing the gearbox oil, fill till it spills?? Approx how much does the diff hold??
Thanks
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Rear final drive unit (Diff to you and me) holds 1 litre altogether :y
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Rear final drive unit (Diff to you and me) holds 1 litre altogether :y
Ahh thats brilliant, was thinking it would be 6 or 7 litres like the front.
Thats my Saturday morning planned then, Stuck under a car, covered an oil with a stinking hangover ;D
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Make 100% sure you have something under the diff if you take the cover plate off to empty the oil and replace it all...and wear really old clothing...the stuff REALLY stinks and stays on you and your clothes for 100 washes as the oil generally only gets changed every 60-100k
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Make 100% sure you have something under the diff if you take the cover plate off to empty the oil and replace it all...and wear really old clothing...the stuff REALLY stinks and stays on you and your clothes for 100 washes as the oil generally only gets changed every 60-100k
Couldn't agree more Chris! that stuff smells like stale cat pi55 and you can't get rid of the smell no matter what you do!
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I drained the gearbox fluid form the motorbike at 16K and that was absolutely rancid. I can't wait to sample the delights of 10yr old 130K fluid. If I sniff it will it send me :D??
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Believe me, get it on anything and you will be able to sniff it forever more on whatever it touches!! Burnt nasty foul smelling stuff...definitely worse than stale cat pee and thats pretty bad stuff!!
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Check the diff output bearings too. Just grab the drive shaft next to the diff and push up and down.
eddie
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Quick question....
When topping up the diff oil should you have the engine running throughout as you would when topping up the gearbox??
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When topping up the diff oil should you have the engine running throughout as you would when topping up the gearbox??
I can't see that helping.
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Right, all done, fairly easy but really need to get myself a proper jack. The one that comes with the car is no good for doing maintaince.
Oh, and the squeaky noise is still there! >:(
I'm sure its something to do with the drive system or brakes as you can hear it as soon as you pull away and it's on/off as the wheels turn but regular.
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Right, all done, fairly easy but really need to get myself a proper jack. The one that comes with the car is no good for doing maintaince.
Oh, and the squeaky noise is still there! >:(
I'm sure its something to do with the drive system or brakes as you can hear it as soon as you pull away and it's on/off as the wheels turn but regular.
Keep us all updated on your progress please, as this seems to be a common case on most omega's. :)
I have asked garage to check oil level and oil condition tomorrow, so I hope things turns out positively for me..:)
And YES, the default vauxhall/opel jack supplied with the car is embarrasing........