Vehicle & Technical > Range Rover

Classic diff lock problems

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clbarclay:
This is the the transphere box linkages. The gearbox is the ZF 4 speed auto fitted with LT230 transphere box. The picture was taken with the cammera positioned about where the drivers knees would be.



The short gear stick enters the box shaped casting above the gearbox from above. I side this is a linkage that seperates convers fore/aft and side/side movement into 2 outputs. The long vertical link is pinned to a shaft that moves left to right out of the side of the box. the verticle link is also pivots on a pin about a 3rd of the way down. the bottom of the verticle link has a short horivontal link to a cam fixed to a shaft that goes down into the transphere box above the differential. This works the diff lock. When you engadge the difflock the shaft on the side of the box on top moves out, the verticle link pivots around the middle pin and the bottom of the link moves towards the gearbox. Dirt and debris can build up round here as its relativerly flat so too much beteen the verticle link and the gearbox could act as a spring, pushing the link back and forcing the lock to disengage.

The second output from the box on top is a rotating cam with a diagona link going back and down to another cam (not very clear in the picture) which goes horizonatally into the side of the tansphere box. The rotaion of this selects between hight, neutral and low ranges.


<EDIT>
Slight error on my part :doh: the side to side output is the other way round, so the vertical leaver actually moves out away from the gearbox at the bottom when you engadge the diff lock

discodee:
its fixed now it was full of crud and half a tree so it went in enough to let the light come on but wasnt properly engaged so thanks for your help no doubt ill break something else soon and need some help cheers,don

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