Vehicle & Technical > Discovery

gearbox/diff lock woes

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john656:
Evening all,
At the prospect of saving £50  I bought a complete gearbox from a breakers who shall remain nameless, instead of going with one that would have been tested etc.... lesson learnt i know, but after freeing off the difflock lever it seems that diff lock is as intermittent and BL themselves and high low selection is a bit of an art. I'm aware that turning these bits by hand is no way replicable of engine speeds but surly it should engage and dissengage as and when i tell it too. After consulting the book of lies (Haynes) the job of taking the transfer box doesn't sound too involved is this true or typical Haynes. I will check that mine is OK on the difflock side of things and if so swap it as its just the gearbox i need (worn layshaft bearings in mine) and hope for the best, and take the transfer box back... altho i am going to have a go at rebuilding my old box and see what happends so i could do the same with that :cool:. 
As if a gearbox change isn't a PITA anyhow. These things are only sent to test us.

Cheers

John

PS excuse the grammar

maggers:
Hiya, Transfer box comes off a doddle, just undo the bolts/nuts & slide off - may need a lever to persuade it. To be honest, Ive found this the easiest way to remove/refit a Discovery gearbox especially when working on  the deck as it makes it a bit lighter to maul around. Gearbox rebuild on an LT77 is a bit of a struggle without the special tools (i've got a set, hee hee!) but best of luck. Don't forget to check the state of the gearbox output splines while the transfer box is off. :lol:

john656:
good good.. ill be on the lift at work so hopefully shouldn't be too much trouble. Ment to say its a 300tdi, think shes the R380 with R oposit 5th. Cudos for doing it on the floor.
Are the transfer boxes normally troublsome?

maggers:
Transfer boxes are generally OK, yours should have a cross drilled input gear so should'nt sufffer from spline wear but it's worth checking. Splits off the same as an LT77. :D

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