Bloody annoying clunk/clonk!

I have had an annoying sharp clunk that seems to be from the front passenger side of the 90. I cannot find any loose suspension or steering components. I have recently fitted a complete polybush kit (a fun weekend!) but the noise persists. I was told by more than one person "it's yer CV joint mate!" whilst I was competing at an RTV trial. I changed said CV joint; no joy! It clonks whenever I hit a bump, big or small. Grids, potholes, speedbumps, whatever. It really comes into its own going over those yellow 'slow-down' stripes before some junctions. Speed is not a factor, neither is acceleration or decelaration. Will clonk if vehicle weight is shifted from one side to the other. I cannot reproduce the noise when not driving, by shaking wheels or jumping on the front bumper! My own thoughts are - shock absorber? - have checked mountings and they seem solid enough. Other possible is swivel pins? - never been there or done that!

Any help or suggestions appreciated

Stew.

Reply to
90ninety
Loading thread data ...

Did you check the A frame connection to the chassis, those bushes teher maybe are worn? Fred

"90ninety" schreef in bericht news:di2d0c$aaj$ snipped-for-privacy@newsg4.svr.pol.co.uk...

Reply to
Landy Fred

I have recently changed the A frame ball joint and polybushed the arms. The whole vehicle is polybushed. Clunk was present before and after. Stew.

Reply to
90ninety

Hello, 90ninety!

This is going to sound silly - but bear with me. Check the following :

Rear tow hitch (if attached - is it lose (the pin)) Bodywork - is there any that can hit any more under a bounce. Engine compartment - there's nothing lose in there? Brake Disc guard - a favourite - they corrode and loosen up.... Brake pads - they can get pushed up, and then fall back into place. Anti-roll bar (if present) Anything loose in the cab on that side that you can't see (maybe in a cubby box)

I think that covers it....

Reply to
Neffalump

That bit makes it sound like the panhard rod bushes could be to blame, but as ever those sorts of noises are very good "moving round" the vehicle - it may even be worth checking the rear top shocker bushes etc.

Richard

Reply to
beamendsltd

On or around Thu, 6 Oct 2005 08:20:23 +0200, "Landy Fred" enlightened us thusly:

A frame joint, suspension top mount on the front, I dunno. Have you tried listening from the passenger seat or from the back? Might help locate it.

Reply to
Austin Shackles

i can tell you exactly what that is .

tighten a bit more tightly the bolts through the brackets on the front axle that hold the radius arms in place .

it may be the rear bracket on the drivers side that is clunking .

ive had this on a range rover and both my landy 90s .

the hole in the bracket very slightly enlarges with years of suspension movement and if the nut is sufficiently loose to allow the bracket to slip slightly when suspension is moved by a certain amount it will make it go clunk .

this usually happened to me when turning tight turns or going around roundabouts, and also on rough ground .

you need an 18" knuckle bar in order to get plenty of torque on the nuts .

you may well have changed the bushes but the hole in the bracket is still the same as it was previously .

there is a washer welded onto the bracket in line with hole , you could replace it if you want to but i found tightening the nuts up on all bolts holding the radius arms cured the clunk .

i can tell you it took me some time to find this and it will most likely cure youre problem if you tighten the nuts sufficiently .

Reply to
m0bcg

It's distinctly possible - I spent a long time looking for a noise in a customer's (non-LR) vehicle before finally discovering that the clonk was internal to a shock absorber. Take it off and check it - but it may be hard to actually get it to make the noise - if so, try swapping them L&R and see if the noise moves.

Reply to
EMB

Thanks for all your suggestions. I had a passenger with me last night, who I instructed to put their head down as close to the footwell as possible. They reckon the noise is from the are of the transmission tunnel, around the gearstick area!!!! I have plans to do a lot of bolt tightenening and I will change the high-mileage front shocks anyway. I will let you all know what gives.

Stew.

Reply to
90ninety

I'd also take a good look at the bolts themselves. In the case of my early '76 RR, I replaced most of the bolts, with longer ones, because they had one side of the brackets riding on the threads which had worn down. Depending on the next size up in length I had to use washers to get some to fit properly. It looked to me as if the designers first made the brackets and then went looking for bolts to fit instead of designing the brackets so that both sides were on the shank of a suitable bolt.

Trouble is, now that I've replaced all bolts and bushes, the remaining clunks are less obvious as to their location. The body mounting bushes look suspect but replacing them without raising the body away from the chassis looks impossible. Is replacing one at a time in situ possible?

Taking this a few step's further, is it possible to remove engine/gearbox/transfer case as a single unit, at home, or do I lift off body and do everything as the easiest way? My manual talks of removing doors, seats & flooring to remove transfer case etc. If engine is removed in a normal fashion, will the rest drop down through chassis rails easily?

PhilD

Reply to
PhilD

On or around Thu, 06 Oct 2005 18:18:03 +0100, Austin Shackles enlightened us thusly:

I meant, of course, damper (aka shock absorber) top mount. The one in the turret.

Reply to
Austin Shackles

On or around 6 Oct 2005 11:26:28 -0700, "m0bcg" enlightened us thusly:

Unless you've got new bolts, you may find they won't tighten. Had that on the 110 - bolt had rubbed in the hole and damaged the thread. New bolts solved it.

If the bushes have been replaced, the bolts ought to be new or good, mind you :-)

Reply to
Austin Shackles

Sounds a bit simple, but it's not a loose exhaust pipe at all is it? TonyB

Reply to
TonyB

Yes, checked that. But I am going to replace the front shocks on Monday anyway.

Stew.

Reply to
90ninety

I put new bolts on everything when I polybushed. Got them before I even started. I figured if the bushes were that bad, the bolts wouldnt be in to good a shape, especially if I had to use the universal bolt-removal-bodywork-modifying-metal-shaping-tool (angle grinder).

Stew

Reply to
90ninety

Checked the exhaust pipe, all is solid.

Stew.

Reply to
90ninety

MotorsForum website is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.