Multiple clunks on takeoff - not the diff

**blackapache** · 2nd February 2016, 08:23 AM

Guys, I'm getting multiple clunks on takeoff every now and then, my backlash is pretty bad too.

I've checked diffs, props, uni's etc all bushes replaced a few months back with super-pro, new a-frame from MR Auto.

I spoke to Rick130 and he suggested checking the a frame bolts which I'm about to do - though MR said nothing about them after they did the ball joint.

I'll check rear suspension eye rubbers too.

Anyone got any other likely culprits. It's not the handbrake. It got worse after pulling the rear prop and reinstalling it. Almost sounds like prop binding... as I pull away from start it will do three or four noises then its fine till the next time i drive it. Not a sharp sound or metallic more of a groaning like a dragging handbrake. Its rhythmical too - could it be the prop binding? I have 33's and 2 lift.

If anyone's got anything worth checking I'm all ears.

cheers guys

**tangus89** · 2nd February 2016, 09:12 AM

Hey mate

The main clunk i had taking off was in the A-frame bolts which were rusted and loose in the bushes.

The drive line backlash was mainly my drive flanges which were so worn the internal splines were not far off letting the axle just spin freely. new ones all round and there's barely any slop.

cheers

MrLandy · 2nd February 2016, 09:24 AM

Sounds like driveline binding somewhere. My old Tdi came with a 2" lift when I bought it and as a consequence he often has clunky uni joints, they don't seem to like the extra angle surprise surprise. So it wouldn't surprise me if other components were groaning for the same reason.

I'm about to return Tdi Landy to standard height for his latter years.

**blackapache** · 2nd February 2016, 10:52 AM

It had TF HD flanges on front when I bought it and MR Auto did a set on the rear when they converted me to oiled bearings at the same time as doing the bushes and a frame. The binding is new. The clunking is new too. Started after the guys put in their adjustable a frame joint.

Previous to this I had no clunking and no binding.

Might check the prop again - was my old man who pulled it for me while I was doing the harmonic balancer - all the unis were tight and no movement.

Maybe the new a frame joint has put the stress on the bolts but i thought MR Auto woulda mentioned if the bolts were flogged out.

**dromader driver** · 2nd February 2016, 01:13 PM

when checking the prop shafts ensure the grease is getting into each of the bearing cups. sometimes it takes a bit of manipulation.

**PAT303** · 2nd February 2016, 02:08 PM

Sounds like a failing uni,get a pinch bar or similar and give them a good rip,does it do it worse when your on throttle and then off?,check the rear one first. Pat