Thread: How to pin-point drive line clunks?

Originally Posted by OffTrack

There is a bit of backlash in the rear diff, and a very obvious clunk from inside the diff housing when you rotate the prop shaft back and forth. I think this is what I've been hearing when I lift off the throttle. I'm not sure how much backlash is acceptable but it doesn't sound particularly good to my ears.

cheers
Paul

Paul, I replaced my rear diff centre with a second hand unit, and found that a lot of the rear noise disappeared. What did you end up finding the noise to be?

Originally Posted by winaje

Paul, I replaced my rear diff centre with a second hand unit, and found that a lot of the rear noise disappeared. What did you end up finding the noise to be?

No I haven't. I do know however that the rear diff started leaking from the pinion seal - a possible portent of worn pinion bearings, and the TC is sounding like it has a bad case of worn bearings under power. So those are the two possible culprits.

I had a drive of a Td5 Auto with 150K km on the clock on Tuesday and the lack of backlash and clunking in the driveline was a revelation. You get so used to the comparative racket that you start to think its normal.

I have a spare rear diff centre that I'm tempted to fit rather than mucking about fixing the current diff.

Cheers
Paul