 | Home > Technical > Diff lock not engaging, any ideas? |
 
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| lohr500 Member Since: 14 Sep 2014 Location: Skipton Posts: 1285   
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I find on mine that if the lever isn't moved left to right fairly regularly it does feel like it has seized up.
Careful application of a bit of force seems to free it up. Then a good waggle  slackens it off completely.
Note to self. Must investigate further at some point and see if a bit of grease or oil could be applied from underneath without the need to remove half the interior! I guess it could have been wrongly connected if the transfer box has been out, but my money would be on the linkage being stiff from lack of use. |
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1st Sep 2018 8:40pm |
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| jst Member Since: 14 Jan 2008 Location: Taunton Posts: 7687 
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it could be catching on the top of the t box where the bolt head is. Cheers
James 110 XS Utility 130 Puma Station wagon/camper (in the making) 90 Puma Hardtop |
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1st Sep 2018 8:43pm |
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| Mwd Member Since: 12 Jan 2016 Location: Scottish Highlands Posts: 44
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Thanks, I think this is the linkage. Looks clean but i can’t move it from underneath so I’ll see what some lubricant does tomorrow. Then I’ll need to keep using it regularly once I get it freed!
 Click image to enlarge |
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1st Sep 2018 8:46pm |
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| jst Member Since: 14 Jan 2008 Location: Taunton Posts: 7687
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yes thats it, so you can move it from below and get the diff lock to engage? Cheers
James 110 XS Utility 130 Puma Station wagon/camper (in the making) 90 Puma Hardtop |
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1st Sep 2018 9:08pm |
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| VVS210 Member Since: 12 Nov 2016 Location: Hampshire Posts: 953
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Have you got any movement in the lever in the cabin? - my DCPU came to me with a diff lock that didn't want to engage, whenever I tried pushing the lever across it felt spongy & wanted to pop back to a central position. A bit of investigation showed that the sound proofing foam on the tunnel was getting in the way & stopping the lever travelling fully as well as pushing it back to a central position. A bit of trimming has fixed the issue.
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2nd Sep 2018 7:53am |
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| Mwd Member Since: 12 Jan 2016 Location: Scottish Highlands Posts: 44
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All sorted now. Just needed lubricating and then a fair amount of waggling back and forth. I’m surprised just how stuck it was - felt totally solid. I guess more frequent use and occasional lubrication should stop the same problem recurring.
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2nd Sep 2018 6:20pm |
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| Procta Member Since: 04 Dec 2016 Location: Sunderland Posts: 4937
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cheers for the info, my dad has the same problem, I don't even think he can even engage low ratio.
What happened with him, he  up with the clutch change, and cooked the clutch, so no doubt the heat will have caused something. Defender TD5 90 ---/--- Peugeot 306 HDI hatch back
Success is 90% Inspiration and 4 minutes Preparation # you can make it! |
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3rd Sep 2018 1:18pm |
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| lohr500 Member Since: 14 Sep 2014 Location: Skipton Posts: 1285
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Hi Procta, I would be surprised if a cream crackered clutch will have caused the high/low shift to have seized. It could well have generated some heat, but the transfer case is a fair way back from the bell housing and has the main gearbox between it and the clutch.
Not sure if the linkage is the same on our Defenders as the early Mk 1 Discos. We bought a V8 Disco with 80k miles on it many years ago and the high low/diff lock lever was absolutely solid through lack of use. I suspected that it had never been in low box since it left the showroom. Again some gentle wiggling with a bit of force freed it up, followed by a shift into low box and diff lock once in a while to keep the linkage moving. Had your dad's been working OK prior to the clutch cooking? |
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3rd Sep 2018 7:43pm |
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