 | Home > Puma (Tdci) > Diff lock engaged or not ? |
 
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| Bluest Member Since: 23 Apr 2016 Location: Lancashire Posts: 4206   
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Jack it up at one end only and see if you can turn the prop when diff lock is supposed to be engaged. If you cant, its working. Make sure the handbrake is off and main box is in neutra
This happened to me ans it was just the sensor switch had failed. 2007 110 TDCi Station Wagon XS |
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9th Oct 2024 8:09pm |
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| jst Member Since: 14 Jan 2008 Location: Taunton Posts: 8018  
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Jack up a wheel.
Gbox neutral Turn wheel it should rotate. engage diff lock lever Wheel will turn a fraction then lock up if diff lock is working. Cheers James 110 2012 XS Utility 130 2011 M57 bespoke Camper 90 2010 Hardtop 90 M57 1988 Hardtop |
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9th Oct 2024 8:56pm |
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| Notyalc Member Since: 27 Jul 2018 Location: Northumberland Posts: 160 
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Moving the lever preloads a spring which pushes the diff lock collar when the 2 halves of the diff are aligned. The lever does not directly engage the diff lock!
There needs to be movement between the 2 halves to allow the alignment and then the engagement. When driving this can most easily be accomplished by turning left or right which will cause the front wheels to travel at a different speed to the rear and align the 2 halves. Likewise if the diff lock will not dis engage, driving rear wards or left or right will release the pressure and allow the 2 halves to separate. |
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10th Oct 2024 6:53pm |
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| andy63 Member Since: 30 Jun 2023 Location: north east Posts: 512
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Great description of the lock operation..
So basically a dog clutch👍 |
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11th Oct 2024 9:20am |
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| Rich h Member Since: 25 Jul 2021 Location: Leicestershire Posts: 31
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Hi a quick update
Jacked one of the front wheels up today it turned ok, gearbox in neutral put in to diff lock high and it still turns freely Has anyone any idea what it could be |
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12th Oct 2024 2:20pm |
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| Waka56 Member Since: 08 Nov 2023 Location: Hamburg Posts: 160 
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I'll follow this thread, haven't since the light since I bought the car.
 Making my Defender great again. (Or trying to at least xD) |
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12th Oct 2024 3:24pm |
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| jst Member Since: 14 Jan 2008 Location: Taunton Posts: 8018
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Follow the linkage down to where its fitted to a spur on top of the t box, turn the 13mm nut all the way to ensure its fully over on top of the box. Assuming linkage is all connected and not fouling a bolt head. Cheers
James 110 2012 XS Utility 130 2011 M57 bespoke Camper 90 2010 Hardtop 90 M57 1988 Hardtop |
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12th Oct 2024 3:41pm |
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