Hi all,
just bought a 2.5TD 90 as a do-er-upper, already repaired the majority of electrical gremlins and am now starting to get the mechanical bits in order.
I was wondering if anyone can help with a query I have regarding the centre diff -
I have been driving the truck on A roads and dual carraigeways for 3 weeks now and the gearbox seems fine with just first being hard to select occasionally. The only problem appears to be the fact that the diff-lock doesn't appear to work! There is a nice positive action when using the diff-lock lever in high ratio and a lighter action when selecting in low ratio however the diff-lock indicator does not come on.
I have tested the indicator wiring and that is all fine - I can't work out a way to get the switch out through the transmission tunnel yet to test it, but I can see the selector arm moving when I try to go in and out of diff-lock. I jacked up the front offside wheel this evening and with the handbrake on and 1st selected I can rotate the front wheel freely whether I select the diff-lock or not! Surely with three wheels on the ground and the diff-lock engaged this should not be possible?
Am I looking at replacing the transfer box or is there another explanation for this?
I have had a trawl through the technical archives but can't find any threads relating to this problem - any help would be gratefully received before I start a search for a new box!
p.s. - great forum, I have already learnt a huge amount from the site.
