Shakes Like Hell - Prop Shaft?

Question

Hi Group,Further to recent post and many gratefully received replies:(the series 3 shakes like hell at about 50mph, with noise coming from thefront?)As suggested, took her on a run, got up to speed and pressed the clutch, thevibrations still there.I jacked the front end up, checked for bearing play, damaged tyres etc, allseemed fine, except for a clicking/odd crunch noise from seemingly the frontend of the propshaft. Could damaged universal joints cause this problem orwould they be unoticiable?Following suggestions from the other replies, I still have to swap thewheels around to check the balance, but it does not have free wheeling hubs,can I remove the front prop and drive around to test the drivetrain theorywithout causing any damage to the gearbox? - Im sure the answer to this isyes, but would like confirmation.ThanksRoger

Rog · Accepted Answer

sluff · Answer

I was going to suggest a lare lump of caked on mud on the inside of one thewheelsbut you seem to have found an alternative .Good luck

Fergus Kendall · Answer

You can run the vehicle safely without the front prop in place, in fact asit is a series vehicle and not full time 4x4 the prop shaft will be doingnothing but being driven by the diff as the car rolls along (in on-road :high range+2wd) , if you have free wheeling hubs you could alternativelydisengage them to stop the front prop turning. Another thing to check firstis that the transfer box is definately in 2 wheel drive and hasn't stuck in4x4. To do this jack one front wheel off the ground and try to spin it withthe handbrake applied if it will not turn you are stuck in 4x4 and need tocheck the linkage.Hope this helps,Fergus

Tim Hobbs · Answer

Yes, take off the front prop and see if it makes any difference to the vibration. Damaged UJ's would (I would think) be very noticeable, and should be fixed (see recent thread about propshafts coming undone at speed!).

Cheers

Tim Hobbs

'58 Series 2 '77 101FC Ambulance '95 Discovery V8i

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Rog · Answer

Thanks Tim

Rog · Answer

Thanks Fergus

Prof Rollerball · Answer

Hi!Sounds obvious, but I nearly missed this!  My 90 was shaking badly - it gotworse as I sped up.  I had checked the tyres previously and they looked OK.But when the shaking got worse I found a bulge on the tyre and some of thewires sticking out - it was about to blow. So I reckon that either the badbit of tyre was standing on the ground when I checked it previously, or thefault in the casing was not not yet visible externally.So, if you haven't done so already (you probably have!) - please check yourtyres very carefully, not missing the bits in contact with the ground!Cheers, Rick

Shakes Like Hell - Prop Shaft?

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