Discovery Tdi300 Vibration

Submitted: Thursday, Nov 10, 2011 at 21:53

ThreadID: 90023 Views:2237 Replies:3 FollowUps:5

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Hux1405

Hi all,

Before all of you bag me for having a Disco... I get it all the time so I'm pretty hardened by the jokes...

Anyway seriously I am finding that when I accelerate to about 40km/h I am receiving a rather prominent vibration throughout the rear of the vehicle, it smooths out at about 50km/h and then returns at 60km/h. Once I hit 80-100km/h it seems to disappear.

I have taken the mud tyres off and put my all terrains back and and it hasn't alleviated it. Ive had a visual inspection of the rubber prop shaft coupling and it has one crack in it.

1. Can this one crack cause all this vibration???
2. Can the coupling lose its firmness or structure making it weak?
3. Can you think of any where else it could come from?
4. What is the big lead weight near the right hand front suspension and should it be loose or rigid?

Any help would be fantastic..

Thanks Hux

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Reply By: mikehzz - Thursday, Nov 10, 2011 at 22:33

Thursday, Nov 10, 2011 at 22:33

Mate, I believe that vibration in early diesel Discos is a fairly common thing. Your best source of info is definately aulro.com. They now everything Land Rover on that site. Cheers Mike

AnswerID: 469692

Reply By: Member - Bytemrk(VIC) - Thursday, Nov 10, 2011 at 22:36

Thursday, Nov 10, 2011 at 22:36

G'day Hux,

A crack in the rubber coupling certaining wont be helping and I wouldn't be too surprised if it is the cause of your drama.

Obviously here isn't a bad place to ask - as there are a few here that will really know, hidden among the many that will question your choice of vehicle.

But if you want advice on the net from real Land Rover experts, try here:http://www.aulro.com/

Cheers, Mark

AnswerID: 469693

Reply By: mike39 - Friday, Nov 11, 2011 at 09:11

Friday, Nov 11, 2011 at 09:11

Hux, dont worry about the bagging, its only envy!

How many kms. have you done when the vibration first noticed?

With mine ('97, bought new) it developed a rear pinion leak at about 90000 and when I pulled the "doughnut" off for seal replacement noticed it was well cracked around the holes (bushed)

Back together again but a vibration commenced shortly after, much as you describe.
I purchased a s/h one (ebay) in as new condition and when I removed the original to replace it found that it had badly collapsed where was previously only cracked.
Immediately cured the vibration, now over 250000 and no further problem.

The large weight at the front I believe is a damper to counter harmonic vibrations in the suspension.

Yes, AULRO is the place for top information on the breed.
mike

AnswerID: 469721

Follow Up By: garrycol - Friday, Nov 11, 2011 at 10:13

Friday, Nov 11, 2011 at 10:13

I agree with Mike.

Why apologise for having a Landie?

The rear rubber donut is not a for for life item and should be replaced about every 80,000km. Some people replace it with a a UJ but requires a bit of work. Can cause vibration when it goes - so does the main ball joint in the rear suspension yoke.

As said the weight (not lead) on the front axle is a damper - not an issue if it is not there but obviously better if it is.

Join www.aulro.com and all will be revealed.

Garry

FollowupID: 744155

Follow Up By: Hux1405 - Friday, Nov 11, 2011 at 12:30

Friday, Nov 11, 2011 at 12:30

Thanks for the info I will logon to aulro forum... WHile I am here what is the rear pinion and where do I find it?? Also Ive got 289k on the clock..

Just so I can have a look... It all started after I began towing some 2 tonne loads, however the clutch is fine... I suspected the prop shaft after all the torque the loads would've created...

Again thanks..

Cheers,
Hux

FollowupID: 744172

Follow Up By: garrycol - Friday, Nov 11, 2011 at 12:59

Friday, Nov 11, 2011 at 12:59

The pinion is the shaft in the diff that the drive shaft bolts onto.

Towing heavy loads will definitely increase the rate of wear on the rubber donut.

They are about $90 and take about an hour to replace - yours needs to be replaced so get this done and see if the vibration is gone.

Cheers

Garry

FollowupID: 744174