Thread: Knocking Noise When Puma 110 Idling; Goes Away When Clutch Depressed

My guess is clutch release bearing BUT I recently had the same symptom on another make and replaced the clutch release bearing and the spigot bush and the noise is still there - guess it shows how much I know .

Thanks Garrycol – I did notice while in 5th and 6th gear the gear stick would sometimes make a vibrating sound. Found on another thread that it is sometimes the cause of weights at the base of the stick (?) so it could be unrelated.

Can an mechanical novice get at the clutch release bearing or is this a bigger job best left to the experts?

Originally Posted by MY LANDY

Can an mechanical novice get at the clutch release bearing or is this a bigger job best left to the experts?

Normally means splitting the engine and gearbox - then while apart might as well do the clutch.

When you switch the engine off does it go thunk thunk thunk like a noisey dog shaking until it stops? (I'm thinking it's just loose springs in the clutch plate).


I bet if you put the transfer case in neutral, main box in 5th and let the clutch out it makes a god awful rattling sound, pointing to worn/failed springs in the cluthc plate.

This is a classic symptom of a failing layshaft bearing in the R380. I assume the 6 speed may be the same.



Erich

Originally Posted by BilboBoggles

When you switch the engine off does it go thunk thunk thunk like a noisey dog shaking until it stops? (I'm thinking it's just loose springs in the clutch plate).


I bet if you put the transfer case in neutral, main box in 5th and let the clutch out it makes a god awful rattling sound, pointing to worn/failed springs in the cluthc plate.

Nah Bilbo, only noticeable when idling in neutral with clutch released. Once clutch is depressed it disappears. I had the springs and clutch plate go last time, but this time around it is more of a knocking sound than a rattle. Thanks for your insights though, mate.

Originally Posted by Bundalene

This is a classic symptom of a failing layshaft bearing in the R380. I assume the 6 speed may be the same.

I would agree with Erich about this .
.

Only other observations I should note are:

> I did notice while in 5th and 6th on the highway (between 90km and 110km) the gear stick would sometimes make a significant vibrating sound, almost as though the engine was under strain. Found on another thread that it is sometimes the cause of weights at the base of the stick (?) so it could be unrelated.

> I had a BAS remap last year to turn off faulty EGR. Possible that the new file (and driver) could be placing additional strain on engine/gearbox? I generally only use 6th when getting up over 90km on highway (95km-110km... and maybe creep a little high on occasion). Certainly respect that this is a Landy and drive it accordingly, not flogging it.