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Homemade Diff Head bearing Tool

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Righty Ho then - This is the Tools n Fab forum after all http://forums.lr4x4.com/public/style_emoticons/#EMO_DIR#/biggrin.gif

Doing more pegged diffs than ever means Steve having to remove old knackered good and bl**dy defo "On" Bearings on

Diiferential Pinions.

They are a piggy to get off, and there is a special tool available, we had one at KAM and it was a wobbly bendy

thing that barely did the job, considering how much is was it was a joke. I was given the 2 x shells for the unit

(which can be bought) and decided a HFH HD version was in order http://forums.lr4x4.com/public/style_emoticons/#EMO_DIR#/smile.gif

Its was this one : http://shop.dingocroft.co.uk/acatalog/Other_tools.html @ £618 FFS http://forums.lr4x4.com/public/style_emoticons/#EMO_DIR#/laugh.gif

So, I had a rummage around, and that Nice Man Rogue Vogue had a lumpy bit of round 30mm thick plate and I had some 30mm flat plate

(as you do) coupled with some 30mm Rod and a lump of M36 threaded bar

So, after an age of machining on the lathe I had a taper on the base plate, and then tack welded the falt plate to it and machined so all

linned up, and poked a very large hole through the plate to allow the M36 2 x Nuts tigged together (will give stronger hold of the push

bar than a single nut), and 4 holes drilled right through the entire assembly I ended up with this :


Once I had done this the welds were broken and the assembly slung together to allow tack welds to go in place when all square :


I then decided to have some much needed TIG practise, and used up all the left over short ends on the floor http://forums.lr4x4.com/public/style_emoticons/#EMO_DIR#/rofl.gif

Some considerable time later I had this :

post-22-0-94560400-1299192347_thumb.jpg post-22-0-76983200-1299192378_thumb.jpg post-22-0-57230000-1299192410_thumb.jpg

Then grabbed a knackered pinion with a "Well on" Bearing on it, and gave it a whirl - It works !


Cost ? Erm "S*d All " Really http://forums.lr4x4.com/public/style_emoticons/#EMO_DIR#/smile.gif

If anyone needs to pinion bearings removed give me a shout, its heavy enough not to go anywhere far http://forums.lr4x4.com/public/style_emoticons/#EMO_DIR#/laugh.gif and big enough not to loose http://forums.lr4x4.com/public/style_emoticons/#EMO_DIR#/smile.gif

Worth looking at Making these "Special Tools" now and again vs paying for them, bit of thought and time and bits

can even see a better unit than what is sometimes sold, may end up getting the threaded bar Heat Treated to

give the tip a longer life, but "Suprisingly" Nothing flexed - at all http://forums.lr4x4.com/public/style_emoticons/#EMO_DIR#/smile.gif

Other thing I have often thought of would be a Drop arm puller for a 4 Bolt Box http://forums.lr4x4.com/public/style_emoticons/#EMO_DIR#/smile.gif

As and when I have the time maybe, but this is one "Needed tool" off the list http://forums.lr4x4.com/public/style_emoticons/#EMO_DIR#/biggrin.gif

£473 + Vat http://forums.lr4x4.com/public/style_emoticons/#EMO_DIR#/rofl.gif I am not a pro, have an old lathe an trully acient 50's milling machine,

with basic tools, time and a bit thought you can make this sort of thing and save a fortune


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Not daft at all DD

1. Erm - I don't have a Hydraulic Press :lol:

2. Tried another method with 2 leged puller - rips cage off :(

3. Hence copied the "Special Bargain Value Toopl"

4. I have the bits of plate / time to make it

5. F Big enough I hopefully won't lose it in the s**tholemess workshop :blink:



Mmmm Hydro Press, Mmmm Likey - now where could I squeeze that in to whats beginning

to look like Mr Treabus Workshop :rolleyes:

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Well done Nigel - that looks very proper!

Over the years I've made several 'special tools' and even though, in general I've only used them once, I'm still quite proud of them and am keeping them safe for the next time!


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in general I've only used them once

Often, once is enough! There are situations where the time taken to make the tool has been completely warranted by the task.

The bonus is, even if you don't plan on using it again, if the occassion arises, the tool is ready and waiting, and free! :D

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Steve (ex KAM) and I used it today "With a Vengence"

One pinion bearing was properly on there - we had the unit clamped in the vice and he was "Giving it large"

on an !2 Drive Breaker bar with the socket on the threaded bar, the bearing actually broke partly a shoy out a lump of the inner

race :blink: which missed us both :), and after we had both gone "Oooer F" he pulled some more and bearing gave in and came off

All in all Chuffed, however he did "Comment" as to the not insignificant weight when staggering about with it



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So, I had a rummage around, and that Nice Man Rogue Vogue had a lumpy bit of round 30mm thick plate and I had some 30mm flat plate

(as you do) coupled with some 30mm Rod and a lump of M36 threaded bar

All lying around "Just in Case" huh? :lol:

Nice job :)

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