juddering and clunking ?

[extreme90]

rite, after a 2nd opinion now  :roll:
when slowing down from above 30mph i get a judder from what seems to me the transfer box, but with the judder theres a clunking aswel,

it only happens when slowing down from speeds above 30 mph, it starts as soon as the needle hits 30  :shock:

now as the speed drops, the judder stays the same, but the clunking gets closer together as the speed drops  :roll:

now, it isnt u/j's as i replaced them all monday
no pinion bearings gone,
no bush's warn as all replaced with stock items as the polys got eaten away  :roll:
a-frame isnt loose
break isnt binding
wheel bearings all tight
normal play in front o/p shaft

now methinks it transfer box  :roll:

any other ideas before it comes out ? and ill replace that damn whining gearbox aswel  :roll:  and look see why my clutch slips  :roll:

chears guys
dan  8)

[Tinks]

Does it do it all the time when your slowing down or when your braking?

If not then i reckon your on the right track.  How old is the clutch? :?

[extreme90]

well.....
it does it when breaking or coasting
no matter if in gear outta gear, foot hard down on clutch, its there  :shock:
o also tried sticking center diff in whilst on move see if it goes or not, no difference
tried sticking diff locker in to eliminate that, still same  :roll:

now for the clutch, its done 600 miles, changed it for a h/d as the stock item cant cope with the power output from my 200tdi  :roll:
after speaking to simon (d44), i got him send me over the same clutch as he used in all his tweaked tdi man challenge trucks, and its only been the last 200 miles or so its been slipping real bad when up to op tempreture  

but have noticed from warm, the vehicle judders like mad when pulling off if not careful on clutch  :roll:

afink its all interlinked  :?

its bit of a arse tho as i just cant put my finger onit  

dan

[lenrover]

The juddering would suggest to me a contaminated clutch plate

[extreme90]

which would be causing the slipping  :roll:
but still doesnt explain the judder and clunking when slowing down from above 30mph  :roll:
it does it in gear or out  :roll:
btw drain plug is oil, no oil leaking and theres new seals in slave cyl  :roll:
dan

[bigfatsi]

Could it not be a diff on the way out? Try disconnecting either the front or back prop and drive it in diff-lock. Then switch it and try again. At least this will tell you if it's the front or rear part of the drivetrain. If neither makes a difference, you've narrowed it down to a common cause ie Gearbox/tranfer etc.

Makes sense to me, although I've just come in from the pub and may not be thinking straight!!!

Simon

[Tinks]

Sounds to me like your on the right line of thought Dan, there's no way a clutch that new should ever be slipping already! :roll:

However unlikley tho it's probably worth checking your brakes, something like a cracked brake disc will cause most of what your describing!

Like you say tho it's a bit of an arse, looks like the gearbox is gona have to come of anyway if your clutch is misbehaving, probably worth having a word with Simon about it before you do tho! :?

[extreme90]

not break discs,  :roll:

tinks, the sound and symtoms to me, are asif the transmission has got some serious winde up in it, just like the center diff is semi-in or having to different diff ratio's fitted, but jack the wheels up affter a run, and nuffing  :roll:
its really confusing
afink what im going do is, giv simon a ring soon as he's recovered from MT's
i need to look at my clutch anyhow, so when the box's are out, im going swap them with 2 fresh units see if that sorts the job out  :roll:
if not back to drawing board  

dan

[gtomo2]

i would say its the handbrake sticking on. if it does not full disengage you get a cluncking and a juddering as you slow down. you will find its probaly very dirty inside and will need a good clean. Nothing expensive. I know as my disco did it and the in laws disco did it. just try pushing the handbrake down more when slowing and it will probley stop it

[extreme90]

still does it without handbreak drum on  :roll:
dont ask how i no  :roll:   :oops:
dan :lol:

[Tinks]

Sounds like a good plan to me cos i'm all out of other slightly probable, easier solutions!!
If your gearbox if whinning & your clutch is slipping its worth doing anyway!!

O and now you've said don't ask I just have to, How do you know that?? :?

[Big G]

Are your gearbox mountings all ok.....?

[extreme90]

mountings are all ok,
did you have to ask tinks  :roll: , well, was eliminating props, so when the back one was off, when i was trying it, went down road, felt a little jerk then a clunk  :shock: .......[Edited] now i thought......pulled in.....handbreak on, nuffing there  :shock: , look in rear view mirror theres my handbreak drum rolling down road  :lol:
but it still juddered n clunked stopping again  
dan

[Tinks]

O man thats priceless, bet that was the last thing you expected to see rolling past you!! :D

Look on the bright side, you managed to eliminate two possibilities al at once! :lol:

You managed to have a word with Simon yet? :?

[Xtremeteam]

stab in the dark

how is the centre diff?

could be breaking up in side & when it does it dont go anywhere locking it in 4wd

[extreme90]

back now, no didnt manage speak to si, as ive been in bed past couple of days ill  :roll:

mike, my thoughts are center diff  :?

personaly to me, it seems like there is a s*** load of winde up in the trans, but nuffing when i jack any of the wheels up  :roll:

on a old disco we had many moons back, it got stuck in center diff, and when cornering, it was doing what mine is doing now, except mine does it when slowing down  :?

bit confused, so whole lots coming out when get around to it

dan

[ringo]

Dan - did you get this sorted ?

Was it your centre diff ?

Thanks

Ringo

[extreme90]

yup,
found problem when re-sealing my front diff  :roll:
pull drivers side shaft n cv out....fine no problems

went to pull passenger side shaft and cv out...shaft stayed there....cv came out  :roll:  :roll:

when fitting the cv's to the ashcroft shafts the retainer popped off the shaft and found itself floating around inside the cv until it wedged itself permenently into the cage  :roll:

replaced cv, all ok now

dan