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Simon27



Member Since: 30 Oct 2012
Location: East Lothian
Posts: 131
Scotland 2009 Defender 90 Puma 2.4 SW Tamar Blue
Do I need diff lock to jack a wheel?
My diff lock often doesn't engage when the gearbox is cold, but completely fine when warmed up.

There's the warning label on the seatbox and in the manual that you should engage it before lifting, but if I properly chock the wheels on the other axle would there be a problem if it was not engaged? On hard level ground surely things would not move much.

If I come out to a flat tire one morning I can't really drive it around to warm up before changing the wheel...
Post #306156 8th Feb 2014 12:52pm
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dondiddy



Member Since: 13 Nov 2012
Location: Hamilton
Posts: 224
Scotland 1998 Defender 90 300 Tdi ST Nato Green
You should be fine without difflock if you chock the wheels and are on level ground as you suggest. Jacking up one front wheel should be fine as the handbrake will still hold as both rear wheels are on the ground. Jacking up a back wheel requires more care as without difflock the handbrake will no longer hold the vehicle and it could move and slip off the jack. Landrover issue that warning to cover themselves as they have no control over the situation when you may have to jack up a vehicle. As with all things however the final decision must be yours. A portable air compressor could blow up a flat tyre enough for you to get to a tyre place who can take the wheel of for repair which gives you another option. And remember putting the transfer box in neutral and running the engine with the car in a highish gear will warm up the gearbox oil without actually driving the car. A couple of minutes running like this might be enough to get the difflock to engage but remember to put the transfer box back into gear before you jack!.As with most things use common sense and you should be fine! Hope this helps! Smile
Post #306174 8th Feb 2014 1:25pm
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Simon27



Member Since: 30 Oct 2012
Location: East Lothian
Posts: 131
Scotland 2009 Defender 90 Puma 2.4 SW Tamar Blue
That's great - thank you for clarifying!

I'll definitely try your tip for warming up the box.
Post #306182 8th Feb 2014 1:52pm
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GUM97



Member Since: 05 Feb 2012
Location: Cheshire
Posts: 3555
United Kingdom 1997 Defender 90 300 Tdi HT Stornoway Grey
dondiddy wrote:
Jacking up a back wheel requires more care as without difflock the handbrake will no longer hold the vehicle

Really? As far as I'm aware the handbrake acts on all 4 wheel simultaneously, so will still hold the fronts when the back is in the air? An engine to TDi for!
"Land Rover- Proudly turning drivers into mechanics since 1948"
Post #306211 8th Feb 2014 4:22pm
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ickle



Member Since: 22 Jul 2010
Location: South Vendee
Posts: 1780
France 2008 Defender 110 Puma 2.4 CSW Alpine White
With a back wheel in the air and the center diff unlocked it will roll!

Keith
Post #306214 8th Feb 2014 4:26pm
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GUM97



Member Since: 05 Feb 2012
Location: Cheshire
Posts: 3555
United Kingdom 1997 Defender 90 300 Tdi HT Stornoway Grey
I never knew that! Thumbs Up An engine to TDi for!
"Land Rover- Proudly turning drivers into mechanics since 1948"
Post #306219 8th Feb 2014 4:38pm
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ickle



Member Since: 22 Jul 2010
Location: South Vendee
Posts: 1780
France 2008 Defender 110 Puma 2.4 CSW Alpine White
Same principal if you have 1 wheel on 1 axle spinning in the mud, you stop, lock the center diff and you transfer 50% of the torque to each axle so you can get drive again to the axle with grip.

hand brake only locks the back wheels as its only on the rear side of the center diff.
Thumbs Up Thumbs Up
Keith
Post #306228 8th Feb 2014 5:13pm
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blackwolf



Member Since: 03 Nov 2009
Location: South West England
Posts: 17369
United Kingdom 2007 Defender 110 Puma 2.4 DCPU Stornoway Grey
ickle wrote:
With a back wheel in the air and the center diff unlocked it will roll!

Keith


But not if it's in gear.
Post #306311 8th Feb 2014 7:52pm
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ickle



Member Since: 22 Jul 2010
Location: South Vendee
Posts: 1780
France 2008 Defender 110 Puma 2.4 CSW Alpine White
Depends on the slope or how tight the wheel nuts are!
Post #306332 8th Feb 2014 8:23pm
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