Hello

Weihrauch100 · Friday at 18:34

Hello to all, My first post on here, been a long time stalker for many a year collecting info and tips! Need help now regarding a tapping noise 3 independent LR garages cannot find. Will say hi first before asking about the problem as unsure of forum etiquette.

Forrest Gump · Friday at 23:07

Ask away pal…plenty lads and lasses on this who know a ton of stuff about the landy breed. Weihrauch make a good air rifle

Knappster · Friday at 23:51

Hi and welcome!

Weihrauch100 · Saturday at 07:55

Thank you. Landy is 1987 Ex military 110. Retro fitted with 300tdi, LT230 1:14 transfer box and LT77 gearbox. There is a metallic tapping noise coming from underneath. Does it in all gears but only when trundling along and feathering the throttle. Sound is rhythmic and does not really speed up with truck only gets louder. You can feel the tapping 50mph to 70mph. Only does it whilst driving. Sound is difficult to trace. Sounds like rattling jaw faces together of two 19mm spanners. Replaced transfer box front output bearing, tapping still there. Removed front prop and ran it in diff lock, sound was gone, so bought a new front prop and sound returned. Anyone any idea whether is front diff or transfer box? Changed oil in all gearboxes and diffs and found nothing conclusive in the oil.

Weihrauch100 · Saturday at 08:10

Weihrauch100 said:
Thank you. Landy is 1987 Ex military 110. Retro fitted with 300tdi, LT230 1:14 transfer box and LT77 gearbox. There is a metallic tapping noise coming from underneath. Does it in all gears but only when trundling along and feathering the throttle. Sound is rhythmic and does not really speed up with truck only gets louder. You can feel the tapping 50mph to 70mph. Only does it whilst driving. Sound is difficult to trace. Sounds like rattling jaw faces together of two 19mm spanners. Replaced transfer box front output bearing, tapping still there. Removed front prop and ran it in diff lock, sound was gone, so bought a new front prop and sound returned. Anyone any idea whether is front diff or transfer box? Changed oil in all gearboxes and diffs and found nothing conclusive in the oil.

Does not do it when under load up or down hill, accelerating or decelerating only when revs match with coasting along. Sounds loud if another truck passes or driving through a tunnel!

Forrest Gump · Saturday at 22:51

What nick is your prop shaft uj’s in. Mine made a noise like that. The hardy spicers were a bit rough.

Weihrauch100 · Sunday at 08:14

Forrest Gump said:
What nick is your prop shaft uj’s in. Mine made a noise like that. The hardy spicers were a bit rough.

All props are new, wide angle. Made up by a known company that build them.

Forrest Gump · 2024-08-26T22:24:07+0100

Ok. Worth a check. My motor has a chinkling noise from somewhere and I can’t pin it down as to where it is…busts ma head so I know how you feel. Wonder if it’s maybe your engine or gearbox mounts/ loose bolts from them. How is all the bushes looking. Any damaged bits of the chassis, mine had a broken gearbox x member that was making a knocking noise. Could it be something as silly as dodgy bearing or something jammed in the hub. Hard to pin it down mate. Keep trying. Do you think you could film/record the noise and put it up.

Weihrauch100 · 2024-08-27T12:26:34+0100

Forrest Gump said:
Ok. Worth a check. My motor has a chinkling noise from somewhere and I can’t pin it down as to where it is…busts ma head so I know how you feel. Wonder if it’s maybe your engine or gearbox mounts/ loose bolts from them. How is all the bushes looking. Any damaged bits of the chassis, mine had a broken gearbox x member that was making a knocking noise. Could it be something as silly as dodgy bearing or something jammed in the hub. Hard to pin it down mate. Keep trying. Do you think you could film/record the noise and put it up.

Tried recording noise before but gets lost with wind and background noise. I'm going to take a punt at some point and replace diff

Gatherrover · 2024-08-27T13:32:38+0100

It does only make the noise while driving..
It was gone when you drove without the front prop (with diff lock on), have you tried it with the rear prop shaft off?
If it is gone again……. that would suggest that your LT230 diff (lock) has an issue?

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