Javelin rear axle hub puller

[Alf Heseltine]

Item sold for £50 plus inc. postage, should be in good order at that price.

Alf

[Andrew Henshall]

Quote:

Andrew,

Doesn't that contradict your previous post regarding Hydro-Mechanical where you stated that the diameter was 1-5/8"?


Oops! Another case of brain fade; thanks for picking that up. Yes, I did mean full hydraulic. I have corrected my previous post accordingly.

[BobCulver]

The hubs on my car had apparently never been run loose and I found a very gentle tightening to be adequate. But many seem to need to be very tight and can be very difficult to separate. Care is necessary that not riding on the key. With studs only 3/8 a little wary of a 3 arm puller. Using a clamped robust old brake disc may be able to pull on the outer or inner rim with a 3 arm puller, or bolt 3 arm to.
Many recommend not leaving pullers in place without a padded cover as can explode off (into the tinfoil modern adjacent).
Care also necessary that the axle thread is not burred. (I run an old Hillman. The book illustrated a thread protector but I could not fathom why. I use an enormous puller fabricated out of Javelin parts. it worked, dented the thread, and took me half a day to remedy!)

Bob Culver

[David Morris]

Hi, You are right Bob, the hubs, when they do finally come off, can be very explosive. I was working in a narrow single garage and when it came off there was a shower of brick dust from the wall! Fortunately, I was standing slightly off the 'line of fire'!
By the way, there is a world of difference between the early hydro-mechanical braked axles and the later full hydraulic braked axles. The early ones have given me trouble in the past, and I can see why Jowett's made everything stronger.
The early axles have 'weedy' dimensions on everything. The keys are small and liable to 'fret'. The threads on the hub for the extractor are smaller and generally they are not up to the job.
I once heard that on both types Jowett's only bought-in the differential assembly from Salisbury as an assembled unit, and then fitted the axle tubes and brackets etc. in-house? Not sure whether this is true, but would be interested to hear any history on this?
All the best,
David

[BobCulver]

Decades ago a retired JCL emplyee in NZ reported to Flat Four, our mag, that he assembled diffs on a bit rate. I might be able to find.

If I was supplying diffs and carring a gaurantee I would want to assemble myself and not entrust to some JCL yokel!

[Tony Fearn]

If I was supplying diffs and carrying a guarantee I would want to assemble myself and not entrust to some JCL yokel!

It's a good job that not many of the current Yorkshire lot use this site!!
Tony.

[David Morris]

I expect Jowett's were assembling the diffs themselves because they didn't trust Salisbury's!! Yorkshire's a byword for quality!

Keep Jowetteering!

David

[Forumadmin]

At least Jowett did not try making the crown wheel and pinion out of the wrong metal on old machinery, like they did the gearbox gears. They sold those machines to Internaional Harvester who seemed to have the same problems.