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Dave Bellis

Member Since: 21 May 2014
Location: Shrewsbury
Posts: 133

2014 Defender 90 Puma 2.2 HT Keswick Green

Diff lock indicator question

anyone know what determines when the diff lock indicator goes off...

Dave

19th Jun 2014 11:17am

GUM97

Member Since: 05 Feb 2012
Location: Cheshire
Posts: 3555

1997 Defender 90 300 Tdi HT Stornoway Grey

I believe there's a sensor, which can fail (thus leaving the warning light illuminated), or simply if it's not disconnecting properly it won't go out! An engine to TDi for!
"Land Rover- Proudly turning drivers into mechanics since 1948"

19th Jun 2014 11:34am

blackwolf

Member Since: 03 Nov 2009
Location: South West England
Posts: 17470

2007 Defender 110 Puma 2.4 DCPU Stornoway Grey

The switch which operates the light is itself operated by the spring-loaded selector fork for the dog clutch on the difflock.

When you move the lever, the linkage compresses a spring which will, if the the difflock dog clutch splines are aligned with those on the diff, engage the lock and the light will come on. If however the splines are not aligned, the spring will compress without moving the dog clutch until transmission movement occurs to cause the splines to align, and then the difflock will engage and the light will come on. So there may be a delay between operating the lever and the light coming on.

Similarly when disengaging there may be a delay if there is a load on the splines (transmission wind-up or driving forces) preventing the disengagement spring from moving the dog clutch.

The important feature, and the reason why this is how it is, is that the light actually indicates the state of the difflock and not the position of the operating linkage.

19th Jun 2014 12:52pm

Dave Bellis

Member Since: 21 May 2014
Location: Shrewsbury
Posts: 133

Diff lock indicator question

thanks blackwolf just the detail I required to understand what happens with the diff lock and indicator on disengagement, it explains all....

Dave

19th Jun 2014 12:58pm

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