Clunking noise!! What the Hell is it????

[Series 3 guy]

Hey guy's I got a question. When I pull away from a dead stop at times in relation to throttle and clutch I am getting a shaking and clunking noise from the rear end. Diff??? I have been underneath the truck and gave the drive line a good shake..nothing.U joints look good nothing there. I have noticed that the rear diff pan is leaking in the mid section from corrosion.If it leaks below a certain point will that cause damage to the diff???Nothing seems loose. Any Ideas????????????

[TerryS]

which truck are you having the (current) problem with?

[Series 3 guy]

Originally Posted by TerryS

which truck are you having the (current) problem with?

My series III 109. 2.25 petrol. When it clunks it shakes the drive system.

[onslow]

Originally Posted by Series 3 guy

Hey guy's I got a question. When I pull away from a dead stop at times in relation to throttle and clutch I am getting a shaking and clunking noise from the rear end. Diff??? I have been underneath the truck and gave the drive line a good shake..nothing.U joints look good nothing there. I have noticed that the rear diff pan is leaking in the mid section from corrosion.If it leaks below a certain point will that cause damage to the diff???Nothing seems loose. Any Ideas????????????

Check the wheel nuts are tight,spring u bolts are tight,spring eye bushes are ok ie no excess play or wear,oil leaks are never good repair the pan before it causes you major problems

[LowTech]

How long have you had your Series? Is it a new sound?

The reason I ask is that mine has a similar sound -- not from the rear end though. It's been there from the beginning (well... since I bought it a month ago). I was figuring that it was due to the clutch engaging quickly/harshly. It doesn't happen every time but sounds a little scary when it does. Wrote it off as a Rover quirk. Let me know what you find out.

[Greg S]

How loud and how violent? I had something like that once about 800 miles from home. Turns out it was a broken carrier in the differential. It would only happen under load which included turning (especially turning). I removed the rear drive shaft and drove with front wheels only till I got home and sorted it.

Greg S

[Series 3 guy]

Originally Posted by Greg S

How loud and how violent? I had something like that once about 800 miles from home. Turns out it was a broken carrier in the differential. It would only happen under load which included turning (especially turning). I removed the rear drive shaft and drove with front wheels only till I got home and sorted it.

Greg S

Gregg-spot on mate!! I get the noise when turning and backing out of my drive as well as when I start from a hill at a stop which puts load on it!! That sounds about right. Just curious...what was the damage to the diff and your pocket?????

[onslow]

Originally Posted by Series 3 guy

Gregg-spot on mate!! I get the noise when turning and backing out of my drive as well as when I start from a hill at a stop which puts load on it!! That sounds about right. Just curious...what was the damage to the diff and your pocket?????

If it is the diff you will need around 50 quid for a s/hand diff and around 150 quid to get it fitted

[onslow]

Originally Posted by Series 3 guy

Gregg-spot on mate!! I get the noise when turning and backing out of my drive as well as when I start from a hill at a stop which puts load on it!! That sounds about right. Just curious...what was the damage to the diff and your pocket?????

Just noticed that you 109 is an 82 I can pretty much rule out the diff it will be a salisbury and they just dont break simple as.

I have seen collapsed input bearings on these axles but other than that they are bomb proof.

If it some kind of diff failure which I am 99.9% it aint then its a new/s2nd hand back axle as the solly diff needs special tools to get it out and nobody will touch them cheaper to fit a replacement axle 100 for the axle 200 to fit one

[pickuprover]

check.... drive flanges for wear (mine currently clunk due to worn drive flanges), also your spring bushings might be worn, causing a clunk. Your splines on the drive shaft as well (make sure you pull the shaft off to check this properly... rtm). Also if you put the rear end up on jack stands and turn the drive shaft, you might be able to pinpoint to the noise, you might have to jerk it back and forth....

[pickuprover]

also did you check your u-joints with the hand brake on or off? The shaking might just be your clutch plates jittering?