Clattering noise under the vehicle when disengaging the clutch !

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Oli67

Member
Posts
22
Location
Versailles
Hello everyone!

I have a Discovery 2 with 350000 kms. For some time now I've been noticing a ‘rattling’ noise under the vehicle when I accelerate or declutch! I thought it might be the brake calipers, which may be loose. It's nothing of the sort.

I have the impression that the noise disappears when I accelerate or declutch smoothly.

I have the impression that this clatter is coming from under the vehicle. Play in a drive shaft?

If you have any research to suggest...

Many thanks! Olivier
 
I would suggest you get underneath and physically check the propshafts.
Even better take them off and check them, do you ever grease them?
Take one off and drive it in diff lock see if the noise is still there.
 
First of all, a huge thank you to everyone for your help. I'm extremely touched !☺️

As for my place of residence... I juggle between Versailles ( 78 ) and Verneuil-sur-Avre ( 27 ).

So I slipped under my D2 and there's indeed a little play in the double cardan. So I ordered them and will replace them ! I have everything I need in my garage to carry out such a repair. I also noticed that there was no grease nipple on front propshaft body ! ! ! So I put one on and rushed to load up on grease.

I plan to have the repair done next weekend. I'll come back here to keep you posted. And hopefully the noise will be gone !

Another huge thank you to all of you ! It's really nice.
 
First of all, a huge thank you to everyone for your help. I'm extremely touched !☺️

As for my place of residence... I juggle between Versailles ( 78 ) and Verneuil-sur-Avre ( 27 ).

So I slipped under my D2 and there's indeed a little play in the double cardan. So I ordered them and will replace them ! I have everything I need in my garage to carry out such a repair. I also noticed that there was no grease nipple on front propshaft body ! ! ! So I put one on and rushed to load up on grease.

I plan to have the repair done next weekend. I'll come back here to keep you posted. And hopefully the noise will be gone !

Another huge thank you to all of you ! It's really nice.
Glad it would appear that you have solved the problem.

Couldn't easily have gone round to help as you are about 800 kms away from us. ;)

Ton anglais est superbe, en passant!
 
Bonjour de France !

I leaned under the car this morning and I'm asking myself this question. Is it normal for there to be play in the transmission? Because in fact, I have the impression that the knocking is coming from the front axle differential ! I specify this because there is no more bit at the propshaft cardans.

 
Bonjour de France !

I leaned under the car this morning and I'm asking myself this question. Is it normal for there to be play in the transmission? Because in fact, I have the impression that the knocking is coming from the front axle differential ! I specify this because there is no more bit at the propshaft cardans.


Although there is a bit of play I have seen worse.
I'd be tempted to remove the drive flange and see if the nut behind it is done up properly.
Over time the splines in the places where the half shafts meet the centre of the differential wear, the pinion gear can also wear in the crownwheel.
I had this problem in a rear differential, the nut had comes out very loose, but once stripped down and the play checked all I needed to do was tighten the pinion drive nut to the correct torque. Best of luck!
Bonjour de France !

I leaned under the car this morning and I'm asking myself this question. Is it normal for there to be play in the transmission? Because in fact, I have the impression that the knocking is coming from the front axle differential ! I specify this because there is no more bit at the propshaft cardans.


And to answer your first question, yes it is normal to have some play!
 
Hello Stanley !

Are you talking about bolt no. 8?

1752056953729.png
 
I do not know this differential and I cannot see from the pic down the hole where the flange goes. There should be a nut underneath all that, that holds the pinion in mesh with the crown wheel. If there is and I am pretty sure there must be, then that is the one that I had to tighten up.
Before you get to that there may well be a cylinder of metal that is a very tight fit into the neck of the pinion mounting. You need to know how to get that out, the nut I am on about is under that.
But again I do not know this differential.
I think you may need to read the RAVE manual for your model, and I no longer know a site where it can be downloaded for it.
@sierrafery will probably know.
There are others available too I believe.
But number 8 is a bolt not a nut, so no, it won't be that one, although if it is loose it needs tightening.
 
Ok Stanley ! I think I've found the right shema.

If someone can give me a more detailed explanation, or point me in the direction of a link that will explain exactly how to proceed once the transmission has been filed, I'd love to hear from you ! How to access nut no. 11.

I wish you have a lovely afternoon !☀️☀️☀️
1752060811296.png
 
Ok Stanley ! I think I've found the right shema.

If someone can give me a more detailed explanation, or point me in the direction of a link that will explain exactly how to proceed once the transmission has been filed, I'd love to hear from you ! How to access nut no. 11.

I wish you have a lovely afternoon !☀️☀️☀️
View attachment 344979
It looks like you will have to remove the flange the seal (10) always a good idea to replace with new anyway, and all the other stuff you will come across until you can get a socket on the nut.
BUT, before you get to that point use a dial test indicator to measure the play in the gears on the crown wheel with the pinion flange locked solid to something. Get back to us with the measurement and we will be able to tell you if you are wasting your time.
 
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