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Car Forum / Volkswagen / Water Cooled Volkswagen Cars / May 2007T reg 1.6 Polo CL Driveshaft
Investigating an unusual rattle from the front of the car I discovered that the driveshaft had sheared where the nut fits to hold the brake disk. Whether through over tightening or not I dont know as I have never maintained this car. So the drive shaft needs replacing ... any comments on whether this is a DIY task and the potential difficulties of doing this myself? TIA Geoff (3 wheels on my wagon). > Investigating an unusual rattle from the front of the car I discovered that > the driveshaft had sheared where the nut fits to hold the brake disk. [quoted text clipped - 6 lines] > > Geoff (3 wheels on my wagon). By the sounds of it you should get away with just the CV joint, not the full driveshaft. Do-able by competent mechanic (so I take mine to the garage), but from what I've watched/helped in the past, jack up, wheel off, unbolt the big castle nut on the end of the driveshaft, unbolt the bottom ball joint, split the bottom arm from the suspension, you should now be able to tap whats left of the cv joint through, release circlip on back of cv boot, tap that off. Now put on new CV joint/boot, use plenty of grease. Reassemble. Full driveshaft as above, but usually (VW) they are hex bolted on at the gearbox end.  SignatureJon B Above email address IS valid. <http://www.bramley-computers.co.uk/> Apple Laptop Repairs. >> Investigating an unusual rattle from the front of the car I discovered that >> the driveshaft had sheared where the nut fits to hold the brake disk. [quoted text clipped - 16 lines] > plenty of grease. Reassemble. Full driveshaft as above, but usually (VW) > they are hex bolted on at the gearbox end. They're spline-head, not hex, on anything later than an early Mk1 Golf. Not done the job on a lateish Polo, but on MK2 Golfs, it's easier to unbolt the strut from the hub carrier than break the bottom balljoint. > >> Investigating an unusual rattle from the front of the car I discovered that > >> the driveshaft had sheared where the nut fits to hold the brake disk. [quoted text clipped - 19 lines] > Not done the job on a lateish Polo, but on MK2 Golfs, it's easier to > unbolt the strut from the hub carrier than break the bottom balljoint. Ah, didn't look that closely, always gone the other end. Every mechanic etc I've watched has always gone the ball joint method. Watching my local independent he had my bottom ball joint split within about 20 seconds by spreading the bolt release rather than trying to bash the ball joint while prying the bottom arm [1]. Very quick, very smooth and a lot less worrying. [1] Which is the tactic every other mechanic I've watched has attempted. SignatureJon B Above email address IS valid. <http://www.bramley-computers.co.uk/> Apple Laptop Repairs. >> >> Investigating an unusual rattle from the front of the car I discovered >> >> that [quoted text clipped - 32 lines] > > [1] Which is the tactic every other mechanic I've watched has attempted. Thanks for the comments! The drive shaft is splined and the stub of this, with the brake caliper, was all that was holding the wheel on ... Again thanks for taking the time to respond Geoff >> >> Investigating an unusual rattle from the front of the car I discovered >> >> that [quoted text clipped - 32 lines] > > [1] Which is the tactic every other mechanic I've watched has attempted. Just for interest here are two pix of the offending nut http://homepage.ntlworld.com/geoff.hamilton1/sheared1.jpg http://homepage.ntlworld.com/geoff.hamilton1/sheared2.jpg I just wonder how close my daughter was (its her car) to actually loosing the wheel with potentially dire results ... Geoff > Just for interest here are two pix of the offending nut > [quoted text clipped - 5 lines] > > Geoff Actually, you're unlikey to loose the wheel. The wheel bearing is circliped in to the hub carrier, so unless it collapsed you'd be OK. I have towed a Golf with the driveshaft out for a short distance, though that's probably not a good idea. Check the bearing anyway. You're not supposed to even roll the car without the hub nut torqued up. I'd love to know how it sheared. The tightening torque is something like 150ft/lb, and when I've undone one on a Golf/Scirocco I've needed a big wrench and a piece of scaffold pole to undo it, so that thread is *strong*. >> Just for interest here are two pix of the offending nut >> [quoted text clipped - 16 lines] > Golf/Scirocco I've needed a big wrench and a piece of scaffold pole to > undo it, so that thread is *strong*. I plan on stripping the assembly later today (weather permitting) so will include a check of the bearing. The disk can be wiggled around so I am wondering if the bearing has died too. Geoff >>> Just for interest here are two pix of the offending nut >>> [quoted text clipped - 22 lines] > > Geoff The bearing seems ok ... but how the heck do you get the CV off the shaft? Is there a hidden clip or summat?? Geoff >>>> Just for interest here are two pix of the offending nut >>>> [quoted text clipped - 27 lines] > > Geoff Remove the boot and give it a firm tap. With older shafts you had to dig into the grease to find the spring clip. SFC >>>>> Just for interest here are two pix of the offending nut >>>>> [quoted text clipped - 32 lines] > > SFC No evidence of a spring clip (and still digging the grease out from under my finger nails). So I guess a firm tap is in order. Just worried in case it pulls the shaft out from the gearbox .. On another note the bearing is completely shagged. I haven't been able to locate (Google) a bearing puller that looks like it would do the job. Found one on a US Forum but seems it not available over here. (Schley Products 63500 VW bearing puller). Any suggestions as to the correct puller to use? Again my appreciation for you all taking the time to help me out Geoff > No evidence of a spring clip (and still digging the grease out from under my > finger nails). So I guess a firm tap is in order. Just worried in case it > pulls the shaft out from the gearbox .. Don't worry. Driveshaft in one hand, big hammer in other, Push towards the car, belt it one. > On another note the bearing is completely shagged. I haven't been able to > locate (Google) a bearing puller that looks like it would do the job. Found > one on a US Forum but seems it not available over here. (Schley Products > 63500 VW bearing puller). Any suggestions as to the correct puller to use? Sorry, no. How hard is it to get the hub carrier off and drift it out with a tube or socket? I've never done one. >> No evidence of a spring clip (and still digging the grease out from under >> my finger nails). So I guess a firm tap is in order. Just worried in case [quoted text clipped - 11 lines] > Sorry, no. How hard is it to get the hub carrier off and drift it out with > a tube or socket? I've never done one. I already had a crack at getting the hub carrier off but was defeated by the steering arm ball joint - couldnt budge the nut but I was maybe just having a senior moment. I'll have another crack at it tomorrow. Maybe this bearing holds the key to the shaft snapping - all the bearing grease had seeped out, possibly the bearing overheated and that contributed towards the demise of the shaft... who knows. This is all that my dear old dad used to call 'the joys of motoring' .... Geoff >>> No evidence of a spring clip (and still digging the grease out from >>> under .... Exasperated Final step of this saga ... Managed to remove the CV joint, firm clump with a big hammer did it. Final straw was the tie rod ball joint to the hub. I purchased a ball joint splitter and managed to release the ball joint - but the nyloc nut is firmly fixed to the thread and I cant remove it because the ball joint shaft just rotates, and no room to get a grip on the thread. The parts list has now grown to include the Hub, track rod end, CV joint and bearing... I am now fresh out of ideas, inspiration, motivation and money. So if anyone wants to make me an offer for this car please feel free.... /Exasperated Geoff >>>> No evidence of a spring clip (and still digging the grease out from >>>> under [quoted text clipped - 14 lines] > > Geoff You might want to consider a nut splitter and a new nyloc nut. >>>>> No evidence of a spring clip (and still digging the grease out from >>>>> under [quoted text clipped - 17 lines] >> > You might want to consider a nut splitter and a new nyloc nut. Yes, I realised a nut splitter would do the trick. I managed to nick the rubber boot on the tie rod end too so need to get a replacement. Sometimes I wonder why I started this .... Geoff >>>>>> No evidence of a spring clip (and still digging the grease out from >>>>>> under [quoted text clipped - 24 lines] > > Geoff Adding to the saga... Nut splitter did the trick, hub now removed and a replacement ordered, The whole bearing is rotating in the hub which is why I needed a replacement hub. Lower balljoint was more difficult to remove as the ball joint splitter wouldnt fit ... however I managed to shock it loose whilst trying to remove the bearing. More news as it happens ... Geoff > More news as it happens ... > > Geoff Just in case anyone is still reading this thread ... Fitted replacement hub from breakers, tie rod end and CV joint from GFS, all fitted and waiting for a road test. Chris - thanks for your comments, much appreciated! Geoff > The bearing seems ok ... but how the heck do you get the CV off the shaft? > Is there a hidden clip or summat?? Yes, usually a circlip hidden up in the joint, can normally be over ridden with a good whack with a lump hammer... SignatureJon B Above email address IS valid. <http://www.bramley-computers.co.uk/> Apple Laptop Repairs. |
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