Thread: Bad Vibrations

tailshaft rubber donut given up maybe?

if its got the donut that can be it..

but also check Ujs, shockies, tyre balance, rim damage, suspension bush damage

When I stuffed the donut in mine it was a severe vibration when accelerating at any speed. I don't think it was gradual unless I didn't notice it until it got really bad.

Although it is easy to check anyway.

tyre balance, rim damage

these would show up all the time. uni joints, espcally the double cardin joint in the front shaft, pinion bearings, transfer case input/output bearings are more prounced under load/acceleration.
check the play in the uni's..shouldnt be any, same with the all the input/outputs.
if i had to guess ide say the dc/uni's from factory they cant be re greased. unis that dont get grease dont last long.

cheers phil

dont bet on it...

they have this nasty habit of harmonising...

Dave, next time it does it, pat attention to the road surface. Some sections of the M1 have visible corrugations which can be seen, especially with the light in the right direction.

It may possibly not be your vehicle but the surface.

From my experiences when the donut goes, you will notice it most when taking off from when stopped as it forces the donut the hardest then. When the front shaft DC unis go, they tend to give vibrations at approx those speeds. I would definately get under nad give the front shaft a twist with the handbrake on, but the transfer and gearbox in N to see if there is any movement in the DC joint. If there is, then I would pull the shaft while under there as they can do a hell of a lot of damage when they let go.

If your donut is only mildly damaged it will vibrate under load at 90-100 kms/hr which is the usual problem speed for td5 disco's, the vibe will reduce on over run at that speed. If it is not the donut remove the front shaft immediately as a double cardan joint failure normaly doesn't give much warning before it lets go with devastating results.
hope this helps.