Dave J
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| posted on 3/4/06 at 02:57 PM |
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LSD and bearing adjustment
Hi all,
I have a Sierra 4x4 LSD fitted to my car. I've noticed an excessive amount of vertical movement on the offside output shaft.
Either the play needs taking up in the bearing or the bearing is shot.
Can anybody advise me of the easiest way of adjusting the bearing play.
This is causing excessive backlash in the diff to the offside drive shaft. Not good for the longevity me thinks.
How do I go about this?
Many thanks for your help.
Dave
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NS Dev
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| posted on 3/4/06 at 03:25 PM |
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sounds odd, never heard of that before!
has someone rebuilt the diff and not seated the bearing cups properly?
To adjust them you remove the locking tabs and screw the big castellated adjusters, in to tighten, out to loosen, but they need the correct preload
etc which is not a 5 min job to sort.
what sort of noise is it making when driving????
Retro RWD is the way forward...........automotive fabrication, car restoration, sheetmetal work, engine conversion
retro car restoration and tuning
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Dave J
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| posted on 3/4/06 at 04:01 PM |
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Thanks for the reply,
Seems to whine on overrun, although it is difficult to hear with all the wind noise etc.
It's the play in the shaft and the excessive backlash which is the concern.
The castellated ring would need a special tool wouldn't it?
I tried moving this but it seems hellish tight.
Back tomorrow.
Cheers
Dave.
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NS Dev
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| posted on 3/4/06 at 04:31 PM |
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Yes, the ring is supposed to need a special tool, though you can often shift them with a piece of flat bar through opposing slots with the driveshaft
taken out.
Retro RWD is the way forward...........automotive fabrication, car restoration, sheetmetal work, engine conversion
retro car restoration and tuning
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Dave J
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| posted on 4/4/06 at 08:29 AM |
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Thanks again for the info.
Am I correct in my assumption that the drive flange is held within the diff by a special circlip that sets the correct load for the output bearing?
I've a horrible feeling that this is where the problem may lie as I cannot really see how the bearing could have become 'loose'
I'm wondering if in it's previous life someone has stripped it out and either mixed the circlips up (offside, nearside) or something even
more hideous.
Can these still be obtained?
I'm getting a definate 'clonk' when going from deceleration to acceleration as there is far too much play in the pinion on the
offside drive flange, due to the fact the flange is not seated within the bearing as well as it should be.
The nearside is fine BTW.
Does any knowledgeable person know the correct procedure for dismantling the diff and setting the preload or even have a decent workshop manual on the
subject?
The Haynes manual chickens out at this point saying it's best to seek the services of a Ford garage if the Diff needs renovation.
Thanks again for your help.
Cheers,
Dave
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MarkLambert
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| posted on 5/4/06 at 11:07 AM |
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Checkout this site for Diff overhaul details, taken from Ford Service CD.
www.fordscorpio.co.uk/manual/rearaxle/DiffOverhaul.pdf
My LSD rear diff has a small amount of backlash on the O/S output but no up and down movement as you describe.
www.raceline.co.uk sell all the bearing etc.
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Dave J
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| posted on 5/4/06 at 11:38 AM |
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Thanks Mark, I'll check it out
Dave
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Liam
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| posted on 5/4/06 at 03:17 PM |
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The circlips are just circlips. Nothing to do with the bearing preload. That is set by rotating the castellated bits in and out as NSDev says.
Liam
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Dave J
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| posted on 5/4/06 at 03:47 PM |
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Thanks Liam.
Mark, sorry to say the link no longer seems active. Have you been on it recently and maybe have a copy of the pdf file you can email to me?
Thanks,
Dave
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omega 24 v6
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| posted on 5/4/06 at 04:03 PM |
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the link was active for me at lunchtime. I'll try again just now and save a copy.
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omega 24 v6
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| posted on 5/4/06 at 04:04 PM |
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Yep cut and paste in the browser and it works ok. Do you want me to save it and email it to you? U2U me your email address.
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Dave J
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| posted on 5/4/06 at 05:46 PM |
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For whatever reason the link would not work at work. I've managed it no probs at home.
It's brilliant, just what I've been looking for.
Thanks for the offer of the U2U. I shall not need to trouble you.
All the best,
Dave.
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tks
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| posted on 5/4/06 at 06:27 PM |
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wtf
Quet a big operation you need to do.
Hope you have got the tools...
pff if i was you i would just tighten the thing up...
else it would be gauge stuff..
Regards,
Tks
The above comments are always meant to be from the above persons perspective.
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NS Dev
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| posted on 6/4/06 at 10:32 AM |
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my concern would be why is it loose to start with unless somebody has messed about with it, not a common problem area with these diffs!
Retro RWD is the way forward...........automotive fabrication, car restoration, sheetmetal work, engine conversion
retro car restoration and tuning
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tks
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| posted on 6/4/06 at 10:47 AM |
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mhhh
what if the diff have been used in his previous life turned over???
Tks
The above comments are always meant to be from the above persons perspective.
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