Page 1 of 1

LJ78 4X4 and diff lock not working helppp!

Posted: Mon Mar 05, 2012 4:52 pm
by madmax120
Cant for the life of me figure out why my 4x4 isn't working.. Everything is on as should be but the front driveshaft wont go!! It has electronic hubs but the pins seem to be engaging fine. Its also got the diff lock option with a switch and i cant get that going either? Any suggestions to try to get it going? Cheers

Re: LJ78 4X4 and diff lock not working helppp!

Posted: Mon Mar 05, 2012 5:30 pm
by mudlva
check vaccum pipes as it sounds like output from trans is not engaging

Re: LJ78 4X4 and diff lock not working helppp!

Posted: Mon Mar 05, 2012 6:43 pm
by uptomynutsinruts
May be pissing into the wind here but dont these have the electric actuator on the side of the gearbox? My mate had an electric actuator on his truck seize up, removed it, sprayed (drowned) with Electra-clean and shes good as new

Re: LJ78 4X4 and diff lock not working helppp!

Posted: Mon Mar 05, 2012 7:10 pm
by pruggerdore
uptomynutsinruts wrote:May be pissing into the wind here but dont these have the electric actuator on the side of the gearbox? My mate had an electric actuator on his truck seize up, removed it, sprayed (drowned) with Electra-clean and shes good as new


no its a vacuum diaphragm, so if vacum is geting down to diaphragm suck on pipe to unit and see if there is resistance. if you can pull air thru it diaphragm has a hole in it. buggered. heard there prone to failure but not sure if its seizing or diaphragm that is the issue.

Re: LJ78 4X4 and diff lock not working helppp!

Posted: Mon Mar 05, 2012 7:14 pm
by oldblue
Diff Lock will only work in low range.with the Hub Lock button in.

Re: LJ78 4X4 and diff lock not working helppp!

Posted: Tue Mar 06, 2012 5:41 pm
by mudlva
Did you find your problem?

Re: LJ78 4X4 and diff lock not working helppp!

Posted: Thu Mar 08, 2012 6:13 pm
by madmax120
All sorted! Cheers for some reason the vacume line were around the wrong way haha