Poor fuel consumption - answer found (I think)

[dandywarhol]

hi can you share the details of how he/you came to this failure, i know your well up on these things ---but---, has it failed, or was the fluid just warm, causing semi lockup, as it should.
when they fail dont they fail (not locked up).
he isnt just giving you the shockers need doing mate speech with a twist is he.

there are youtube video's that explain how to test,and how much slip should be expected,and what speed free rotation is allowed without it starting to lock.

i had (i thought) a problem with mine a while ago,it turned out to be fine.
jack all wheels up free,then put a long bar on one wheel nut, and fasten a 5ltr container of water to the end, there is a certain time allowed for the container to fall to the ground,if it falls slowly without driving the other wheels it will probably be fine, if it falls quickly, its knacked,if it stays its also knacked.
the limited rear diff may alter the results a little though so bare this in mind.

Surely if you have all wheels free then applying a force to one front wheel will have the reaction of turning the opposite wheel the other direction and it'll be easy to turn? No LSD in the front diff AFAIK

The check (from memory) is to jack up one front wheel and apply a long bar and socket to the front driveshaft nut - it should turn about a quarter turn before stopping if the viscous coupling is OK. If it doesn't, then the VC is seized.

[Northern Bongolow]

i agree with the first paragraph,the front end should rotate the other way, if force is applied to one front wheel.(no lsd)
all the transfer box tests i have seen use force on the back wheel to check the slip through to the front end, but in theory it should work in reverse(front to back).
if we suppose we turn one back wheel then the lsd should lock if enough slip is noted then the transfer case should lock drive to the front driving the same way,this would then make the opposite front turn the opposite way---yes .

[dandywarhol]

You'd need to ammend your first post to say to hang the bucket of water off a rear wheel Ady but if there was no LSD then the opposite rear wheel would still just turn in reverse through the diff - an easier route to take than trying to work through the transfer box, working properly or not (assuming the 'box is in neutral)

[Northern Bongolow]

yes , sorry i thought i had put rear wheel in my first post .
just wanted to make sure i understood it correctly, and agree with the outcome if non lsd on rear, thanks.