Vehicle & Technical > Defender

swapping disco to defender swivels and drive shafts

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Matt_H:
here's the scenario:

clunking noise coming from somewhere, most noticeable over a bump or especially if you steer left and right quickly whilst travelling over about 20 mph.  There's a kind of TACK noise which tends to happen the once, rather than over and over... if you are wiggling the steering it will tack several times.  Hard braking then coming to a rest sometimes does it too and certain kinds of bumps do it too.

I've gone over everything I can think of
Props - no play in the ujs although you can twist it a little but guess thats just normal gearbox and diff slack take up (no worse than others I've had)

Checked all the bushes I can see - all look in tact with no visible cracks (again I've had much worse) The only bush I can't see is the shock top.

Engine mounts, all botled down and rubber looks good.

The only thing that looks odd, is one of the hockey sticks, where it bolts into that u shaped bit with a bush, it's hard agasint one side.  I did a wiggle ofthe steering whilst stationary and it doesnt' seem to change sides anyway!

Its not making noise round corners like a CV is on it's way out, but I'm still suspecting them for some reason.

Before I parted co with the shell of the disco I took the complete hub assy with the drive shaft still attached (basically unbolted from end of axle tube) from both sides as well as taking the diff out.

Are the axle diffs/ drive shaft/ hub assy the same on the disco as an early 90?  I was hoping I could just swap the brake calliper (2 pipe to 1 pipe) and bolt both hub assys back into place.  I know the swivels and cvs were good on the disco as I just rebuilt them!  

Thanks for reading this far!

Matt
PS the starting is now sorted with an inj pump rebuild :)

muddyweb:
Noooooo

Don't do it !

The 90 CVs are stronger than the Disco ones, so you'd be changing to a weaker set up than on the 90 at the moment.

Check the steering shaft UJ's for wear.. also check the swivels all move freely and with no notchiness.

Matt_H:
well at the moment I'm all out of ideas, I dont know what a knackered cv would look like, having only seen a good one once when i took my swivel apart on the disco (never again if i can help it!)

I've checked the steering shaft too (under the bonnet)  I cant see how to check the in side cab part.  The other thing is that it will happen in a striagh tline so the steering doesn't have to be turned (it just helps).

How would I check the swivels for no notchiness?  I guess i need to jack the car up - can i turn by hand or do i need an assistant?

The only other thing is, I am totally out of money for a good few months after the £700 bill for the pump, so can't afford new 90 cvs, hense the idea to swap them overfor known good ones... so apart from them being weaker, are there any differences?  I guess if I did swap them I could always rebuild the 90 ones if it turned out to be those bits.

M

ChrisW:
Does it have an anti-roll bar and are the link's ok if it does?
The links on mine need replacing and after a bit flexing they tend to clunk when turning or going over bumps...  :?

Matt_H:
nope not got one of those.... Grrrr I hate odd clunks!

M

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