Ray
Almost everybody I know has run into this problem at some time.
For completeness there are other things to watch out for on 'big' Healey
rear axles.
1) The size of spanner you use is too large for BN1s with spiral
bevel, 4 stud rear axles. This requires the one that was first used on
A40 Somerset, A70 and A90 Atlantic. Again with 8 flats.
2) On the BN1 spiral bevel and the early hypoid, 5 stud both
threads were RH whereas yours would be different each side. The change
took place at the same time as the oil filler was moved from the front
of the 'pumpkin' to the back of the main axle casing.
The 'official' tools had a spigot which entered the casing and kept
everything steady whilst turning. This is particularly helpful when
reassembling. There was even an official modification to the larger tool
that chamfered the outer diameter of the'socket' area to allow the tool
to fully engage the nut when the cupped lock washer was in place.
If my memory is correct somebody in the States is re-manufacturing the
larger version?
All the best
> I'm striping down my dif for a total rebuild and new Lempert gears.
>Everything is going along great till I get to the hub carrier. I have
>fraction, metric, whitworth, and British standard wrenches but nothing that
>big. I'm on a roll, I figure I have this rear end, one for another car and
>there's my brothers car too, so I'll just make a nice wrench to fit and we'll
>build at least three rear ends with it. So I carefully measure 2 3/16" across
>the flats on the big nut and then I carefully scribe the lay out with my 60
>degree angle on some 3/16" plate put it on the mill and carefully machine a
>perfect hex. Next I neatly cut a nice circle around the hex and welded on a
>handle. I figured it might need just a little filing to get a perfect fit so
>I tried it up to the nut and you know I was in the twilight zone some
>alternate reality where nuts have eight sides and not six. Who knew? The
>joke was on me. Hope you got a laugh out of my look before you leap story.
> I had to do the whole exercise over using the 45 degree angle. I'm
>cruising now. The dif case is ready to go to the stripper and the pumpkin to
>the gear guy.
>Healey on!
>Ray Juncal
--
John Harper
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