1969 SE5 Alfa V6 conversion: My LSD trip.

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Re: 1969 SE5 Alfa V6 conversion:7HA axle "no strong enough"

Post by Nick » Wed Feb 15, 2017 3:37 pm

I think James has it covered, mind, buying and fitting a new Quaiffe will not leave much change out of a grand...........


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Re: 1969 SE5 Alfa V6 conversion:7HA axle "no strong enough"

Post by fightingtorque » Thu Feb 16, 2017 1:05 am

Will cost more than a grand..... so I'll hold fire for now.



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Re: 1969 SE5 Alfa V6 conversion:7HA axle "no strong enough"

Post by turbster » Thu Feb 16, 2017 8:43 am

fightingtorque wrote:Will cost more than a grand..... so I'll hold fire for now.
Looks like some Jaguar specialist has bought the rights to sell them from Quaife and they've pretty much doubled the price which is nice of them :roll:


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Re: 1969 SE5 Alfa V6 conversion:7HA axle "no strong enough"

Post by fightingtorque » Fri Apr 21, 2017 2:42 pm

Started a little bit of work on the replacement (4HA) axle.....

I want to replace the seals on all 3 corners of it. I tried a normal puller on one of the hubs, but as expected it didn't work and eventually I broke it. So I've managed to order a 4" pipe flange from the internet, and with a bit of work in the lathe, that goes on ok. Unfortunately I've had to order the cap to go in the middle separately as for some reason I ordered the wrong size first time round.

While waiting for that, I thought I would make something up to stop the input flange rotating for when I need to undo that nut. Then one thing led to another and I realised I had gone ahead and undone it without marking the position first. Presumably this means I will need to replace that crush - tube that determines the pre-load?



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Re: 1969 SE5 Alfa V6 conversion:7HA axle "no strong enough"

Post by philhoward » Fri Apr 21, 2017 2:47 pm

Theoretically, yes - new crush spacer time.

In practice, you might be able to get away with going up to a certain torque (as it starts to climb exponentially as you get to the point it starts to try and deform the spacer again). I've no idea what that figure is, but it was about all my might on a 1/2" drive ratchet (not a torque wrench or breaker bar).

If you've got it on the bench with the rear cover off when you could possibly do it with a mesh check with some engineers blue when it starts getting tight? Given what you've done to date, I suspect that's well within your capabilities..


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Re: 1969 SE5 Alfa V6 conversion:7HA axle "no strong enough"

Post by AJL Electronics » Sun Apr 23, 2017 9:13 am

I have had very little (actually no) success with the Mickey Mouse tools. In fact I managed to destroy a half shaft. A local garage also destroyed a hub with heat trying to remove one. Since I bought a proper hydraulic puller, not one has defeated me. They are not too expensive either, I think mine was £75.


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Re: 1969 SE5 Alfa V6 conversion:7HA axle "no strong enough"

Post by fightingtorque » Mon Apr 24, 2017 12:52 pm

OK, started the attempt with the flange tool, there was yelling about coming in for dinner so it wasn't a through attmept but indications are not great.

Does one of these look like a good device:
http://www.ebay.co.uk/itm/Hydraulic-Dri ... SwZ1BXc8i-

Which is a substantial looking flange with a central tube that has a small screw handle on it, presumable driving a small piston into a hydraulic chamber which has a larger piston on the other end, or something like this:

http://www.ebay.co.uk/itm/10-Ton-Hydrau ... SwnHZYhs4E

In which the hydraulics look a bit more convincing but the three legged approach less so?



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Re: 1969 SE5 Alfa V6 conversion:7HA axle "no strong enough"

Post by Roger Pennington » Mon Apr 24, 2017 1:33 pm

Your first one looks like the "AJL recommended version" :)


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Re: 1969 SE5 Alfa V6 conversion:7HA axle "no strong enough"

Post by Oldconn » Mon Apr 24, 2017 4:42 pm

The second one, although it looks man enough for th job, has a pointed end which will ruin your half-shaft unless you add a pad. The first one looks similar to the one I use. Even with 10-ton capacity, you will probably need some heat and some banging around the outside of the hub -and don't stand in line with the end ! :)


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Re: 1969 SE5 Alfa V6 conversion:7HA axle "no strong enough"

Post by fightingtorque » Wed Apr 26, 2017 6:49 pm

Thanks gents, I have ordered the first one ( the one with the flange rather than the 3 legged one).
Most of the way through April already and only been out for the one short trip which ended in this axle destruction.
Still, I'm in a better position than this time last year.

Gav



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Re: 1969 SE5 Alfa V6 conversion:7HA axle "no strong enough"

Post by AJL Electronics » Wed Apr 26, 2017 7:02 pm

You may also require a wheel spacer and four 1/2" UNF nuts with washers.


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Re: 1969 SE5 Alfa V6 conversion:7HA axle "no strong enough"

Post by fightingtorque » Fri May 05, 2017 2:41 pm

So far, still no joy even with the hydraulic device. I don't know how much it helps - the rate of advance of the pushing piston looks like it is only about half the rate of the screw, so I doubt it's making 10 tonnes.

My mate has a fly-press which we have used in the past for separating things that didn't want to be separated.

If I remove the four bolts holding the wheel bearing , it seems I should be able to withdraw the hub and halfshaft in one piece and then we can probably get on it with the fly-press. Is there any drawback to removing in this way, i.e. will the diff fall to bits ? It's not an LSD (I know there is something to do with a spacer if you have the LSD). Can I take both half shafts out at the same time?

I do have the manual but it's still a bit unclear to me how the whole thing is held together (yes I have undone the hub nuts and also taken the drums off!).

Cheers.
Gav



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Re: 1969 SE5 Alfa V6 conversion:7HA axle "no strong enough"

Post by philhoward » Fri May 05, 2017 2:47 pm

Wind it up so it's putting pressure on it and leave it - give it an occasional tap with a copper hammer and it will come off. Might take a few minutes or an hour..


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Re: 1969 SE5 Alfa V6 conversion:7HA axle "no strong enough"

Post by AJL Electronics » Fri May 05, 2017 4:18 pm

s Phil says, there is a technique. It will not come off with just winding it up.


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Re: 1969 SE5 Alfa V6 conversion:7HA axle "no strong enough"

Post by AJL Electronics » Fri May 05, 2017 4:25 pm

First step is to make sure that the nut is on, flush with the end of the thread. That protects the half shaft and saves your life if it comes off with you in line of fire. Then bolt up the puller, with spacer if needed to get it sitting flush. Mine needs 10mm. Then wind up the pressure and leave it for a while. Go back to it and wind it up some more if you can. Stay out of line of fire! Leave it a bit longer. Give the puller a clout with a decent lump hammer at the hub flange, both sides. If no reaction, try winding the pressure up. Rinse and repeat until you hear an almighty bang. Job done. I have not yet had one resist my ministrations. ;-)


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