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bobbber P4
Joined: 14 May 2003 Posts: 2162 Location: The Greatest Town on Earth - Swadlincote, UK
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Posted: Mon May 18, 2009 10:36 am Post subject: Driveshafts |
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Hi chaps...
Pretty sure I have a problem with one of the CV joints on the nearside of the car.
I want to remove the driveshaft that side and then have a good look at it all on the bench. Any hints?
According to the manual all that's required is to remove the bolt on the hub and the 6 Allen bolts on the CV joint (gearbox end). Is this correct?
Also the hub bolt is done up to around 350ftlb... any ideas for achieving this? I plan to put a bar across two wheel bolts to keep it still... good idea?
Hints to buy a 1" drive torque wrench not acceptable they're about £350.
Bob _________________ Fiat Bravo 165 Sport |
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Admin Site Admin
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Joined: 19 Feb 2003 Posts: 1223 Location: Stafford, UK
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Posted: Mon May 18, 2009 10:48 am Post subject: Re: Driveshafts |
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bobbber wrote: |
Also the hub bolt is done up to around 350ftlb... any ideas for achieving this? |
Hang a 1lb weight from a 350 foot long extension bar?
Undoing things like this in the past has been possible with someone standing hard on the brakes.
All the best
Keith _________________ I owe, I owe, its off to work we go.
Bimota Forum
Stafford Christmas Lights
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Oggie Green Cloverleaf
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Joined: 06 Mar 2008 Posts: 811 Location: Whitehill
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Posted: Mon May 18, 2009 10:56 am Post subject: |
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What about an impact driver?. _________________ PHAT 33 |
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bobbber P4
Joined: 14 May 2003 Posts: 2162 Location: The Greatest Town on Earth - Swadlincote, UK
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Posted: Mon May 18, 2009 11:01 am Post subject: |
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Impact driver? Blimey... you don't mean an impact wrench do you? I can't imagine smashing 350ftlb across my fingers... perhaps I'll invite you round Iain to do it for me!?!
Keith... I guess I could hang my 100lb mate from a 3'6" bar good thinking that man! _________________ Fiat Bravo 165 Sport |
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JeremyC Gold Cloverleaf
Joined: 06 Sep 2008 Posts: 583 Location: Petersfield, Hampshire
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Posted: Mon May 18, 2009 11:33 am Post subject: |
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Do you really have a friend who weights 7st 2lb?
In my experience numbers like that just mean "as tight as you can"! _________________ '93 Black 33 1.7 16v |
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bobbber P4
Joined: 14 May 2003 Posts: 2162 Location: The Greatest Town on Earth - Swadlincote, UK
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Posted: Mon May 18, 2009 12:14 pm Post subject: |
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JeremyC wrote: |
Do you really have a friend who weights 7st 2lb?
In my experience numbers like that just mean "as tight as you can"! |
Yeah Jeremy... that's about what I thought! ![Laughing](images/smiles/icon_lol.gif) _________________ Fiat Bravo 165 Sport |
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lee16v 16 Valve
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Joined: 29 Jun 2005 Posts: 1429 Location: Devon, UK
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Posted: Mon May 18, 2009 2:11 pm Post subject: |
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Yeah, Using a long bar with a bit of scoffolding or similar to get leverage and as jeremy said, Chuffing tight.
Probably easiest to undo with wheel on ground and working through wheel centre. Not sure our brakes are up to stopping more than 20lbft pressure ![Rolling Eyes](images/smiles/icon_rolleyes.gif) |
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bobbber P4
Joined: 14 May 2003 Posts: 2162 Location: The Greatest Town on Earth - Swadlincote, UK
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Posted: Mon May 18, 2009 2:31 pm Post subject: |
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Cool Lee... I did wonder if you could get at it through the wheel centre ![Very Happy](images/smiles/icon_biggrin.gif) _________________ Fiat Bravo 165 Sport |
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lee16v 16 Valve
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Joined: 29 Jun 2005 Posts: 1429 Location: Devon, UK
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Posted: Mon May 18, 2009 2:37 pm Post subject: |
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Socket should go through. If not wheel off, fit socket, wheel back on then use short extension and fit wrench. Bit of a faf but easiest way on your own ![Very Happy](images/smiles/icon_biggrin.gif) |
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bobbber P4
Joined: 14 May 2003 Posts: 2162 Location: The Greatest Town on Earth - Swadlincote, UK
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Posted: Mon May 18, 2009 3:15 pm Post subject: |
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Marvellous!
Going to see if I can get complete shaft for replacement rather than faffing about with UV joints and stuff.
Keep ya posted ...
Bob _________________ Fiat Bravo 165 Sport |
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gritsop Green Cloverleaf
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Joined: 23 Apr 2003 Posts: 766 Location: Ekali, Athens - Greece
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Posted: Mon May 18, 2009 3:37 pm Post subject: |
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Hi all,
Let me throw in some info regarding the driveshaft removal.
First of all you need a 6mm Hex nut to undo the nuts from the gearbox side CV joint; the hex nuts usually accumulate dirt so you have to either clean the inside of the hex nut using a slim screwdriver or make sure you gently press in the hex nut in order to expel dirt.
Regarding the axle nut: It is a 36mm nut that can be removed only if you have in hand a machined socket like the photo shows. Since the hub is conical a non machined socket will not fully grab the axle nut and it wont be long till you round the axle nut.
A good piece of advise to prevent the axle from turning is either applying the brakes or a better way is to wedge a screwdriver on the gap of the vented brake disk against the fixed caliper bracket.
I had used a regular lever to undo the axle nut which is used to remove the wheel bolts; it is around 70cm long and the axle nut was easily removed without any major difficulty. However on installation I used the torque wrench to fully tighten the axle nut to the specific setting; be sure to punch the axle nut on both sides in order to prevent it from unlocking.
As far as the CV joint is concerned then this is a hell of a dirt job. If I am not mistaken there are a couple of variations of the CV joint so in order to get a new one you need to have the old one as a sample.
Hope this helps.
Regards
EDIT: Here are the dimensions for the machined socket.
![](http://img521.imageshack.us/img521/3599/axlenut.jpg) _________________ Thanassis Gritsopoulos
1991 Alfa 33 1.4 IE
2001 Alfa 147 1.6 Distinctive
http://www.alfa-restoration.co.uk
Parts Shop: www.alfa-restoration.co.uk/shop |
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john 33_16v 16 Valve
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Joined: 27 May 2005 Posts: 1406 Location: herts, uk
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Posted: Mon May 18, 2009 4:32 pm Post subject: |
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Hi,
Than is spot on about that 36mm socket needing machining.
I recently tightened up my hub with a new nut.
It was fackin tight, but i managed with a jack handle on the end of a 'strongarm' 1/2 inch dive. As i was on my own I wedged my stoplock between the brake pedal and seat front, which worked.
John _________________ If it aint broke, fiddle with it until it is!
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93 33 16v Mirtle Met
08 Fiat Grande Punto Exotica Red
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bobbber P4
Joined: 14 May 2003 Posts: 2162 Location: The Greatest Town on Earth - Swadlincote, UK
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Posted: Mon May 18, 2009 5:00 pm Post subject: |
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Interesting.
So the smallest outside diameter needs to be 48mm?
36mm nut (A/F), I make that 18mm radius.
Therefore, external radius (A/C) = 18/cos30 = 20.8mm.
Therefore, external diameter (A/C) is 41.6mm.
That doesn't seem particularly thin? 48 - 41.6 = 6.4mm, which is 3.2mm socket wall each side of the points.
Perhaps that is thin on such a large socket! ![Laughing](images/smiles/icon_lol.gif) _________________ Fiat Bravo 165 Sport |
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john 33_16v 16 Valve
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Joined: 27 May 2005 Posts: 1406 Location: herts, uk
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Posted: Mon May 18, 2009 7:18 pm Post subject: |
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Hi,
I started with a laser(i think) socket and ground back just a little around the top quarter or so. It wasn't a beautiful fit but did the job.
Probably not viable Bob, but i'd be happy to send it to you if you wanna pay postage, for you to give it me back at Auto Italia stanford hall in June if you're going.
John _________________ If it aint broke, fiddle with it until it is!
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93 33 16v Mirtle Met
08 Fiat Grande Punto Exotica Red
90 Yamaha FZR600 Genesis- Silky white/red/blue
Last edited by john 33_16v on Tue May 19, 2009 7:24 am; edited 1 time in total |
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eagle3 Alfa 33
Joined: 11 Nov 2007 Posts: 402 Location: France
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Posted: Mon May 18, 2009 8:56 pm Post subject: |
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Quote: |
I plan to put a bar across two wheel bolts to keep it still... good idea? |
That's what I do if the wheel's already off, but it's certainly less hassle to unblock it with the car on four wheels with the handbrake on. A good quality 1/2 inch socket, bar and about four feet of pipe usually does it. _________________ Alfa33 QO 1984
Alfa33 1.3i.e. 1994 |
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lee16v 16 Valve
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Joined: 29 Jun 2005 Posts: 1429 Location: Devon, UK
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