AlanT Posted October 23, 2022 Report Share Posted October 23, 2022 Hi All, I’ve got oil pouring out of one side of the diff on my Spit 1500, enough to splash the rear box! There is also a horrible sound of bearings when first setting off (if the car has sat all week) This goes after half a mile. Rear hubs are good, UJs are new. Thoughts? thanks Alan Link to comment Share on other sites More sharing options...
johny Posted October 23, 2022 Report Share Posted October 23, 2022 Check oil level first thing however there must be at least a problem with the seal. Alternatively the bearing may have failed and so the shaft can move and the seal leak. You could see if theres any play in the output shaft flange.... Link to comment Share on other sites More sharing options...
AlanT Posted October 23, 2022 Author Report Share Posted October 23, 2022 Thanks @johny. Oil was maxed a couple of hundred ago. The diff had been sat 20 years (as had the car) so I suspect a failed bearing. Can I change these without taking the diff off? Link to comment Share on other sites More sharing options...
johny Posted October 23, 2022 Report Share Posted October 23, 2022 The ouput shaft assembly comes out very easily by undoing the four allen head bolts but the problem is the half shaft is in the way and under tension. Really youll want to do both sides and clear out any debris from inside the casing so I would remove the diff and open it up... Link to comment Share on other sites More sharing options...
AlanT Posted October 23, 2022 Author Report Share Posted October 23, 2022 Thought you might say that! Joy!!! Other than the output bearings are there any other sources of bearing squeal that can arise from the diff? It felt smooth when I’d checked it over, but you know how it is when you actually drive these cars! Link to comment Share on other sites More sharing options...
johny Posted October 23, 2022 Report Share Posted October 23, 2022 The symptoms are a bit strange so maybe if someone can confirm a way of getting the output shaft out in situ (your car has a swing spring so this might be easier) you can verify the condition of the bearing. Note: replacing the seal the bearing is normally renewed at the same time. 1 Link to comment Share on other sites More sharing options...
Pete Lewis Posted October 23, 2022 Report Share Posted October 23, 2022 you can generally move the undon shaft & coupling away enough to extract the short shaft to change the seal you do need to remove the bearing to release the seal carrier and the bearing is a sod good fit and will take some serious bashing to get the shaft out of the bearing there is no room to fit any puller legs these shafts take all the suspension thrust so thye do a lot of work and do fail from time to time squeals could be a siezing UJ there is no gasket between the retaing plate and the main diff casing i would smear some sealer on a refit you will need a hex key which has to access the bolts via the holes in the coupling Pete Pete Link to comment Share on other sites More sharing options...
AlanT Posted October 23, 2022 Author Report Share Posted October 23, 2022 Fab. Thanks @Pete Lewis Will take the hubs and shafts off so can check UJs again and sort the oil seals. Always something to fix at the moment! Link to comment Share on other sites More sharing options...
Pete Lewis Posted October 23, 2022 Report Share Posted October 23, 2022 you can give the coupling UJ a good wiggle whe you discon it i wouldnt remove the whole shaft and hub thats a bit OTT Pete Link to comment Share on other sites More sharing options...
Pete Lewis Posted October 23, 2022 Report Share Posted October 23, 2022 when I was a 20 yr hairy yoof my 948 sheared a output shaft so in a dark garage and a torch , pre war screw jack and some blocks i dropped the whole diff only to find the short shaft nearly fell out on its own i could have saved lot of cursing when the spring comes up to meet the floor made a good learning curve no such thing as haynes in 65 afaik well i didnt have one pete Link to comment Share on other sites More sharing options...
AlanT Posted October 23, 2022 Author Report Share Posted October 23, 2022 Well if I get the output shafts off it should be fairly obvious if a bearing has failed. Have already taken one side hub off this afternoon as a UJ was my first thought. One was tight when fitted (a month or so back) but it seems ok, albeit looser in one direction than the other. Got to sort the ridiculous amount of oil coming out anyway @Pete Lewis Link to comment Share on other sites More sharing options...
johny Posted October 23, 2022 Report Share Posted October 23, 2022 Let us know the outcome Alan as all adds to the hive knowledge😂 1 Link to comment Share on other sites More sharing options...
Pete Lewis Posted October 24, 2022 Report Share Posted October 24, 2022 when you hold the bearing in a good vice and knock seven bells out the shaft let us know how you get on Pete 1 Link to comment Share on other sites More sharing options...
AlanT Posted October 29, 2022 Author Report Share Posted October 29, 2022 On 23/10/2022 at 18:01, johny said: The ouput shaft assembly comes out very easily by undoing the four allen head bolts but the problem is the half shaft is in the way and under tension. Really youll want to do both sides and clear out any debris from inside the casing so I would remove the diff and open it up... Hi All, Mine is undone but won’t come out! Any ideas? @johny Link to comment Share on other sites More sharing options...
johny Posted October 29, 2022 Report Share Posted October 29, 2022 The bearing is a push fit in the casing and sometimes needs a bit of assistance to pull out. Be careful not to damage or bend the sealing faces as they use no gasket. A bit of tapping with wood on the flange should knock it out.... Link to comment Share on other sites More sharing options...
AlanT Posted October 29, 2022 Author Report Share Posted October 29, 2022 Thanks @johny I think we’ve found the problem!!! 1 Link to comment Share on other sites More sharing options...
AlanT Posted October 29, 2022 Author Report Share Posted October 29, 2022 How that could happen, I’ve no idea! Link to comment Share on other sites More sharing options...
johny Posted October 29, 2022 Report Share Posted October 29, 2022 oh dear, think diff needs to come out for an internal clean🙁 Link to comment Share on other sites More sharing options...
AlanT Posted October 29, 2022 Author Report Share Posted October 29, 2022 Advice on how to remove the inner race from the shaft is most welcome. Circlip is off. Thanks Link to comment Share on other sites More sharing options...
johny Posted October 29, 2022 Report Share Posted October 29, 2022 some sort of wedge in there and keep tapping it in all the way round - old screwdriver or chisel? Link to comment Share on other sites More sharing options...
AlanT Posted October 29, 2022 Author Report Share Posted October 29, 2022 Not enough angle to get to it that way. Think it needs a puller of some sort. May need to get specialist help to change the bearings (will do both sides). Link to comment Share on other sites More sharing options...
Peter Truman Posted October 29, 2022 Report Share Posted October 29, 2022 Proper bearing puller the one in two halves that bolt together with thin inner edges should work that’s how I got mine off Link to comment Share on other sites More sharing options...
johny Posted October 29, 2022 Report Share Posted October 29, 2022 An old chisel down at right angles to the shaft between the flange and outer race? The problem with normal pullers is having the space to get the jaws in place. I think you need to at least get it started before you can use a puller.... Link to comment Share on other sites More sharing options...
AlanT Posted October 29, 2022 Author Report Share Posted October 29, 2022 Taken the other side out. It’s fine. But will change anyway. Link to comment Share on other sites More sharing options...
AlanT Posted October 29, 2022 Author Report Share Posted October 29, 2022 19 minutes ago, Peter Truman said: Proper bearing puller the one in two halves that bolt together with thin inner edges should work that’s how I got mine off Hi @Peter Truman thanks. I’d be grateful if you can point me at a pic of the right one so I buy correctly. Thanks Alan Link to comment Share on other sites More sharing options...
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