juddering on acceleration after 25mph... :S

hi all,

my 300tdi 1995 es disco has developed a judder which is consistent to low and high range after 25mph, makes no difference if diff lock is in or out, but on overrun or clutch depressed or in neutral there is no judder.
when pulling away there is the occasional clunk/click from the rear.

have checked the rear rubber donut and rear diff input drive bearing, and nothing seems to be wrong there.

anyone had anything like this or any idea what it might be?

thanks!

Propshaft UJ

definately UJ

so i took of the worn prop, and took it for a test drive with rear prop only on (diff lock in)
and there was no judddering whatsoever.

fitted new prop and now juddering is back same as before. checked wheel bearing on drivers side and there is a bit of play.

would u say this alone could be the cause? if it was just the wheelbearing it would make noises and such all the time instead of only under acceleration?

your thoughts please

what did you do ?????

you didnt change the whole prop did ya ???
you only need to change the u,j,s
youve put it back the right way round have ya ??
get hold of the rear prop and give it a good shaking any play should show up then , with a bit of luck you can tighten the wheel bearings up

robint said:

what did you do ?????

you didnt change the whole prop did ya ???
you only need to change the u,j,s
youve put it back the right way round have ya ??
get hold of the rear prop and give it a good shaking any play should show up then , with a bit of luck you can tighten the wheel bearings up

Click to expand...

yeah changed the whole prop as had a spare one.
yeah defo back right way round all greased up.
rear one is good, all greased up and no play.
i shall give tightening the wheel bearing a go tommorrow.
theres a slight occasion click metal to metal screech occasionally on pull away but not major.

is the swivel ujs common proplem area?

thanks

I had a CV go on my old disco and it clicked going round corners until it completely failed

did you change the UJ's? Educated guess, Front UJ (nearest front diff)

so its been juddering ever since my first post and ive had to live with it, but now its gettin silly.

originally, i thought it was the transfer end UJ on the front pop cos that was knackered so i changed the UJ.

rumble carried on.

rear diff failed off road, changed the rear diff for a good'n and while i was there changed both rear wheelbearings, and checked the rear prop, all good.

so rear end is all nice and fresh...

rumble carried on.

so i thought it might be something to do with the front diff or halfshaft/cv joints. so i rebuilt the front alxle yesterday, new diff and pair of cvs, as i was there i also did the wheel bearings.

all back together and...

the rumble carries on.

however while i was under there i also notice the new front prop UJ at the transfer has now failed after about 6 weeks!

so am i now looking at the transfer box output bearing?

im getting into unfamiliar territory now...

anyone help me out?

CHEERS

Dunno if this will be any guid tae ye..

http://www.landyzone.co.uk/lz/f41/transfer-box-front-output-bearing-oil-seal-renewal-81771.html


... if ye need tae change the front output bearin'

just an idea but have you asked an actual mechanic face to face what the problem could be, some problems ive had have been hard to explain on the forum and ive struggled to get an answer yet ive pulled round a few of the local garages and just said "whats wrong with this mate?" and to the trained eye/ear ive had bang on diagnosis within 5 mins (when ive struggled for 3 weeks on my own with no joy) im friendly with a few of the garages round this way, and as such have never been charged a penny for thier help, ive then always ordered and fitted the parts myself. Sometimes it can be hard to know the problem without actually being there, I fit floors 6 days a week whereas these guys have prob seen the problem a hundred times before. maybe worth the ask. You cant beat hands on experience.

Mine used to judder badly on deceleration from speed on the over run-when the clutch failed I found 4 off of the bell housing nuts were missing and some of the bolts were loose-yiks.Rebuilt it properly and juddering gone-might be worth a check.I wonder what other surprises are in store from previous owner!

thats a very acurate no nonsense guide, thanks

how do i know if it is the bearing though?

ive checked for play in the otput shaft and there is a very little but the juddering is quite sever now, rattles things off the dash... :O

Again have you checked the front/front UJ (no mention of you checking or replacing it in ur previous posts) the one nearest the front diff, had exactly the same problem as you described and it was the front prop - front UJ on mine, see here http://www.landyzone.co.uk/lz/f8/advice-needed-death-wobble-vibrate-92710.html

Taxed said:

Again have you checked the front/front UJ (no mention of you checking or replacing it in ur previous posts) the one nearest the front diff, had exactly the same problem as you described and it was the front prop - front UJ on mine, see here http://www.landyzone.co.uk/lz/f8/advice-needed-death-wobble-vibrate-92710.html

Click to expand...

thanks for the reference.

when it all started first thing i found was the front prop transfer box UJ had gone slack.

so changed the whole propshaft for one with no slack in it.

but the problem was still there, no change at all.

but all the time that ive been messing about checking everything else over the past 6 weeks, the new prop has gone slack too, exactly the same UJ. somethings causing it to eat its way thru UJs... but what? im not ruling out that it could be the UJ causing the rumble but surely the chances of changing a shot UJ with a goodun and to find the problem is still there wud suggest that it isnt?

ok, i was just saying, for the sake of £30 i'd have changed both front prop uj's (for brand new ones, not a spare prop - no guarantees its in good working order after all its a spare.... why's it off? etc) before i stripped and rebuilt the front axle, and if that didnt cure it would have took it to local lr specialist otherwise u'll just be chasing ur tail, good luck though, let us know what it was if you get to the bottom of it

thanks for your help, much appreiciated. pardon my ignorance... so the UJs seperate from the propshaft? if so easy job? special tools required?

thanks

this for example?
Land Rover Discovery HD Propshaft UJ Universal Joint x2 on eBay (end time 10-Mar-10 20:26:29 GMT)

andyt109 said:

thanks for your help, much appreiciated. pardon my ignorance... so the UJs seperate from the propshaft? if so easy job? special tools required?

thanks

Click to expand...

Ah think this might help...

http://www.landyzone.co.uk/lz/f41/uj-renewal-59812.html

When ye buy yer uj's, try and get the longer grease nipples 'cos they wee ones are a pain tae get the grease gun intae

bustersbus said:

Ah think this might help...

http://www.landyzone.co.uk/lz/f41/uj-renewal-59812.html

When ye buy yer uj's, try and get the longer grease nipples 'cos they wee ones are a pain tae get the grease gun intae

Click to expand...

cheers mate! once again, very concise!