welp found my vibration

[incisor]

Welp i found the cause of the vibration in my disco i think...

i can move the front output flange on the transfercase about .25mm in any direction...up down and around style_emoticons/<#EMO_DIR#>/tongue.gif

i can hear my wallet screaming...

whats a reco'ed transfercase worth in this day and age?

or a good second hand one?

how big a drama is it to do this bearing?

there goes my trip to sydney and a few other things to boot i think...

bugger!

[Jojo]

I have an old one here, mate, but it´s inSweden... Do you want me to put it in an envelope and mail it over 8) .

Hope all is well otherwise!
Cheers

[incisor]

gidday! jojo

good to see you back on the site!

yeah just throw it into a jiffy bag and send it on it;s way style_emoticons/<#EMO_DIR#>/tongue.gif

good trip back?

[Hellspawn]

Sure the front driving flange aint just loose ? In which case pack behind the nut with suitable washer then 'reef' nut up tight again.

The procedure for the bearing replacement I would guess be something along the lines of put the transfer into locked low with the handbrake on and gearbox in Park. Undo the driving flanges bolts, remove front drive, undo the driving flange nut, flange should now pull out leaving the the oil seal. Pry out the oil seal, if you can do it without damaging you're better than me at them, the bearing should be sitting in there held by a circlip. Remove with your circlip pliars and withdraw bearing.

Rush to the telephone and order a new oil seal $5.00 and front bearing $12.50 from FWD in Vic. When parts arrive reinstall parts in reverse order subsituting replacements for worn/damaged.

Hook into it should take half a day if parts are there already.

Have fun style_emoticons/<#EMO_DIR#>/biggrin.gif

[Jojo]

I'll put a stamp on it and off it goes 8) . Just make sure your mail box has an adequate size. Just wondering how the poor postie on his red Honda will be coping with the excess load...

The trip back was a bit challenging. I'd rather drive in a Series Landy to Cape York than going on a long haul flight on a 747 in Economy class.

[shaunp]

You can change the front bearing in situe. take of the flange and you can remove the circlip and hook the bearing out, or you can use the shaft to pull the bearing, but careful the diff lock selector doesn't drop. Easy job, I think there may be pictures of how to do it on Discoweb.org . Slide hammer is needed. They normally have some movement in the front shaft.

[shaunp]

Found it
http://www.discoweb.org/tcasebearing/index.htm

[incisor]

thanks for the link...

[incisor]

does anyone know how much movement is usual?

i can rattle mine, if i move it up and down quickly you can hear it knock...
btw it is the bearing not a loose flange.

surely this cannot be normal... ??

to my mind that much slop would have an affect further back into the box surely...

the seal isnt leaking....

am going to have to get m & r or british off road to have a look and confirm i think... as it willplay on my mind style_emoticons/<#EMO_DIR#>/tongue.gif

[Hellspawn]

Admittedly different transfer case setup but my front drive at the same point doesn't move in any direction apart from spins.

The seal may not be leaking now but it could be working to grooving the driving flange. Best get it looked at.

Interesting the bearing needs to be driven out.

[shaunp]

If you can rattle it I'd change the bearing. They normally move a little because they only have one bearing to support the shaft, the other end floats in the diff splines. So if you can feel too much play, it will be the outer bearing. That bearing takes a bit of thrust due to the front 1/2 shaft angle. I find drive line vibe is normally related to the front shaft somewhere as long as rear drive shaft coupling is ok.

[incisor]

getting Dave at British offroad to have a look tomorrow as he reckons that shouldnt be it... have had a gutful of the vibration.... i want to see what is behind me in my rear vision mirror!

tomorrow will tell the tale i suppose..

[Pedro_The_Swift]

Originally posted by incisor


tomorrow will tell the tale i suppose..

*bump*

cant just leave us hanging--
c'mon Inc,,
its tomorrow already,,,, :wink:

[shaunp]

So did you find it? I spent this afternoon looking for a vibe at 110kph in Brad's 200tdi Disco, put my wheels on it, found a really loose front wheel bearing. Uni's seem ok, still did it. It to has a sloppy front transfer case bearing, which has already been replaced 40k ago I may add. Much looser than mine which has done 140k.

[incisor]

i still have my vibration / rumble

i took it up to british off road and left it with them for the day.

they couldnt even feel it they say...

left me truely flabergasted to say the least.

they reckon some are harsher than others...

well it makes the rear vision mirror vibrate that much it is virtually unusable at 98klms and i am about to remove the weathershield on the drivers side window because it makes an absolute racket ... and the cabin resonates and the dash makes some wonderfull tunes, oh and it vibrates the auto dipstick out of it's pipe style_emoticons/<#EMO_DIR#>/tongue.gif sorta beyond the bounds of a little harsh i think. (i had the auto serviced 2 weeks ago and they noted the noise as well and assured me it wasnt the gearbox).

i picked up the landy the next morning and had to wait a little while as they sorted thru the influx of jobs for the morning and got to observe how they treat their customers... not very impressive. i walked away more than a little bemused.

i enjoy dealing with paxton, the guy is great and always polite and helpful, but the other staff i delt with left me feeling more than a little disappointed to say the least, i was left with the impression i wasnt worth the hassle.

i will take it to m & r and see if they can pick it or are willing to take the time to trace it or i will attempt it myself when i can get a chance.

life goes on and a lot less of my money will end up in BOR's coffers from now on.

[Hellspawn]

Incisor

Know anyone with a 4 wheel set of eddy current rollers ?

Two people, five minutes on the rollers would sus it out

Shaunp would know someone as I think he's only got a single drum dyno which wouldn't be much help unless the front wheels were jacked up.

Be a better solution than guessing.

[shaunp]

I wonder if yours has cracked a flex plate around the torque convertor bolts? Brads cars is not as bad as yours you can just feel it through the seat at 110k and seems to be dependant on road surface. I nipped up the front wheel bearings but I think they are on the way out or the spindal stub is worn from them spinning on them. I'll try and pull the disc off this arvo and have a look/change them.

Shaun at QLD Dyno tune & performance at Cabulture was talking about getting another set of rollers so he could do WRXs may be worth a call. There is another guy close to me at Wynnum off Wondal road who I think may have some as well. I'd need to talk to Arron and find out.

Give Warren and the boys at M.R a go first they should sort it. I was over there on Saturday picking up some bits as it happens.

[Joatt]

Incisor
Some simple things that you can check your self.

Is the vibration engine rev or road speed dependant , that will help to eliminate engine or drive line , run the engine (transmission in park)at the same rpm that you get the vibration on the road and "float" the revs from just below the target rev point to just above it and vise versa, if you get a vibration that is similar to the on road one(the vibration may not be as harsh as on road as the drive plate is not "loaded") you could have a cracked drive plate or an out of balance torque convertor.

I would doubt if it were the transmission, if the engine revs sweet I would next check out the tail shafts and sliding joints, jack up the front/rear , have someone rotate the wheels by hand, lay underneath and watch the shafts rotate to see if they run off center ,sometimes uni joints even though they show no movement can be fitted slightly off set and the shaft will ossilate as it rotates, causing out of balance at high rotation speeds, this will also happen if there is movement in the front or rear transfer couplings or diff pinion bearings, but as always with vibrations of this nature it can be difficult to pinpoint as the vibration is "generally throughout the vehicle" and no I would not describe your vibration as acceptable or normal .
At the end of the day it may well be in the transfer case, center diff area :cry:
Cheer Joatt

[Joatt]

I forgot to add it may well be worth your time to drop the end of the front and rear tail shaft to check for seized uni joints ...... sometimes it can be the simple things style_emoticons/<#EMO_DIR#>/smile.gif