The Toyota Landcruiser Owners Club

mud-maker-dan · * Joined: 19 Jun 2007 Posts: 11 Location: donegal ireland

Hi Folks
I own a 1993 LC Prada LJ70 series. 2.4Turbo, with a Manual gear box
Just wondering if anyone has, had any problem when disengaging the 4WD drive system with auto hub locks. The problem is when you switch on the H4 switch and the Auto hub lock switch (on the RHS of the dash) to the on position the LC work fine, But when you disengage the system, it seem to stay in four wheel drive mode, but no 4WD lights are showing on the dash and drives as if it is still in the four wheel drive mode, but after driving the LC say a few metre down the road a loud cluck noise come from just in front of the gear stick and the LC seem to go back into two wheel driving mode.
I can hear the motors on the auto hub going in and out, but have not looked any closer at them yet.
Plus how does the H4 switch work.
Your Help on this would be much appreciated

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devonoak · *** Joined: 01 Apr 2007 Posts: 158 Location: devon

i reckon the h4 switch is like on the 60 series, which is a solenoid operatd vacuum valve so the switch opens a valve which nicks a bit of air sorry vacuum pressure from the brake servo and shifts on the side of the transfer box. If i was caning it up the road in my 60 when i let it out of h4 some times it would come out with a bang....

tom

roscoFJ73 · Posted: Tue Jul 24, 2007 4:33 Post subject:

mud-maker-dan · * Joined: 19 Jun 2007 Posts: 11 Location: donegal ireland

Thank you devonoak and roscoFJ73

I have tried the reversing slowly and no bang,so therefore do you think I still have a fault with either my vacuum system,or the solenoid,or do you think this is normal on the L.C,because someone told me on the old land rover you had to go into reverse to take them out of hub lock.Plus on the rear diff lock should the light flash or should it be a steady red light

Again thank for your information

roscoFJ73 · Posted: Wed Jul 25, 2007 4:52 Post subject:

devonoak · *** Joined: 01 Apr 2007 Posts: 158 Location: devon

yeah thats right rosco
its flashing when its trying to go in; when its its constant red
at least on my 80 thats how it is; in fact mine dont go in they flash forever. I keep meaning to unsieze them somehow cos I think this is a common problem caused by under-use. I havent got stuck yet but i did fail to pull a 17 ton rig out of a little rut the other day at low speed and i may have had a chance with the locks in
tom

mud-maker-dan · * Joined: 19 Jun 2007 Posts: 11 Location: donegal ireland

Hi Tom
what would you have to do to cure the diff lock problem,I have had a looked under the L.C and found two pipes going to some sort of pressure operated lever, which then goes to the top of the rear diff to operate a linkage arm,do you think if I try and move the arm might it cure my problem,

PS, can anyone advise me on the best workshop manual for my 1993 L.C LJ70 Prada with a 2T-LE engine.because when I went to the local Toyota dealer the mechanic came out,and I explain my fault to him, he looked at me as if I had two heads especially when I told him that the L.C was a Japanese import.So therefore I will need a workshop manual and a lot of help from people like yourself, Rosco and Lucky.

cheers Danny