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| excossack Member Since: 22 Feb 2012 Location: North West Posts: 5842   
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I had this with my old Lada Niva. All four corners locked up while driving along. Turned out, the pushrod from the pedal to the master cylinder needed the free play adjusting.
The pushrod was just gentle pressing enough to make the brakes come on 1999 Defender TD5 110 Regards John M0VAZ Econet Station 48 no clock |
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10th Oct 2024 3:01pm |
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| ickle Member Since: 22 Jul 2010 Location: South Vendee Posts: 1777  
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is there a front to rear balance valve on your truck?
Keith |
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10th Oct 2024 3:06pm |
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| Procta Member Since: 03 Dec 2016 Location: Sunderland Posts: 5161
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laugh is we have not had a look yet
 they did remove the brake pipes, well cut them off, when they did the rebuild.
i will mention the brake pedal thing too. Defender TD5 90 ---/--- Peugeot 306 HDI hatch back
Success is 90% Inspiration and 4 minutes Preparation # you can make it! |
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10th Oct 2024 3:24pm |
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| blackwolf Member Since: 03 Nov 2009 Location: South West England Posts: 17357 
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AS noted above the most common cause of the brakes not releasing is the push-rod from the pedal to the MC being adjusted so that it is too long, this prevents fluid from being able to return to the reservoir.
IN the case of a Defender (with dual circuit brakes) it is possible for only one circuit to lock on, and I suspect this is what is happening to yours. When, many years ago, I collected a SI I had just bought I had this problem and ended up immobile on the A4 in Beaconsfield in a thoroughly nasty spot. I had to let fluid out of the bleed nipple to release the brakes, drive to a place of safety and then adjust the push-rod. |
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10th Oct 2024 3:26pm |
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| Procta Member Since: 03 Dec 2016 Location: Sunderland Posts: 5161
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i am starting to suspect something like that is missing on my dads https://www.defender2.net/forum/topic83668...cing+valve Defender TD5 90 ---/--- Peugeot 306 HDI hatch back Success is 90% Inspiration and 4 minutes Preparation # you can make it! |
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11th Oct 2024 2:08pm |
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| Dinnu Member Since: 24 Dec 2019 Location: Lija Posts: 3413  
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What is in that thread is a G Valve. As the name implies, its a mechanical valve that senses G force when the Landrover is involved in a collision and shuts off the hydraulic line. It is not a pressure reducer. 1988 90 Hard Top, 19J Diesel Turbo, Shire Blue - Restoration ongoing
2012 90 CSW, 2.2TDCI, Santorini Black |
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12th Oct 2024 7:03am |
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