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austen



Member Since: 11 Mar 2008
Location: Sydney
Posts: 52
Australia 2008 Defender 110 Puma 2.4 SW Stornoway Grey
Knock from underneath
I exerience a loud knocking noise from underneath when travelling on broken or corrugated roads. It seems to be present in hot conditions but not noticable when cold, such as in the mornings. I have checked the exhaust and it is well clear of the brake drum. Has anyone any ideas?
Thanks,
Austen.
Post #5751 26th Dec 2008 10:43am
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Grockle



Member Since: 24 Nov 2008
Location: Peak District National Park
Posts: 2266
United Kingdom 2008 Defender 90 Puma 2.4 XS CSW Tonga Green
Could be a shocker. 2.4 90 XS
1968 1/32 scale Britains 109 Pick up.
Post #5775 27th Dec 2008 10:12am
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Sticky



Member Since: 07 Dec 2008
Location: Derbyshire
Posts: 245
England 2016 Defender 130 Puma 2.4 HCPU Stornoway Grey
Austen

Try applying the hand brake very slightly in the same conditions and see if produces the same symptons, if so it may the handbrake adjustment, I am told the return spring is being replaced as well as issues with drums.

As the heat in the drive train builds up the handbrake catches the drum and you get a thump and knocking noise.
Post #5799 30th Dec 2008 12:28am
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austen



Member Since: 11 Mar 2008
Location: Sydney
Posts: 52
Australia 2008 Defender 110 Puma 2.4 SW Stornoway Grey
Thanks Sticky. I just tried pulling the handbrake on 1 click whilst driving and it seems to make the clonk (experienced when gear changing) worse. You may be onto the reason for the clonk!

The noise is still there - it's like someone knocking on the floor or the cubby box.

Austen.
Post #5807 31st Dec 2008 7:44am
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RgrBox



Member Since: 04 Jun 2009
Location: St-Cergue, Switzerland
Posts: 111
United States 2008 Defender 110 Puma 2.4 CSW Bonatti Grey
OK.. I'm having this same problem.. what did you do to correct this.. or is it a problem?

Mike B. 2008 110 2.4 tdci csw
Landrovers of Switzerland Club member
Post #12479 29th Jun 2009 3:28pm
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austen



Member Since: 11 Mar 2008
Location: Sydney
Posts: 52
Australia 2008 Defender 110 Puma 2.4 SW Stornoway Grey
It turned out to be the bonnet hinge bushing. Took ages to locate the noise, but I remembered my old Series 11A made the same noise.

Austen. Rover 12 1935
Rover 20 1940
Rover 100 1960
Defender TDC1 2008
FL2 TD4 2008
Post #12719 7th Jul 2009 4:20am
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