Outer Limits 4x4 Board

G'day everyone.

Just got myself an 82 Range Rover the month.

Put it into 4wd for the first time the other week and now it seems as though it won't disengage 4wd (on roads it binds up around corners etc).

I'm assuming the centre difflock is staying in for what ever reason.

No matter what position I put the high/low selector or what posiition the centre diff lock lever is in it doesn't make a difference.

Any suggstion would be greatly appreciated.

Cheers,
Paul

check the linkages under the car, maybe some fresh oil in the trasfer may help, it may not have been engaged in years so may need some freeing up

mistaboz wrote:Put it into 4wd for the first time the other week and now it seems as though it won't disengage 4wd

Range Rover is ALWAYS in 4wd, just high and low range, locked or unlocked centre diff. Sometimes you need to have the diff lock lever in unlocked and reverse straight back for a distance to get the centre diff lock to disengage.

Thanks for the replies.

Have tried reversing for some distance and hasn't helped.
I did actually know that they are always in 4wd but must have had a dumb moment

It had sat there for about a year without any use, so I will replace the oil and see if it makes a difference.

Any other ideas?

Cheers,
Paul

Been an 82 it should be a 4spd unless its been changed.
Could be the vacuum actuator, i had one crap itself out in the bush one day and i couldnt disengage the centre diff.

DK wrote:Been an 82 it should be a 4spd unless its been changed.
Could be the vacuum actuator, i had one crap itself out in the bush one day and i couldnt disengage the centre diff.

Ok, I will look into this one.
I wasn't sure if it worked on vacuum or what.

Cheers

There is two air lines going to the front output cover on the transfer case that operate the difflock. I can't remember exactly how it works, but IFIRC engine vacuum pulls the diaphram which actuates a fork which slides a locking dog onto the centre diff. The fork slides along a short shaft with two detents locked and unlocked. The difflock light is operated by the fork being fully in the locked position irrespective of where the operating knob is.
Driving on hard surfaces can put enough load on the locking dog that the vacuum is not enough to release it.
A bit of compressed air into the lines may be enough but be carefull not to overdo it as the seals inside were only designed to take engine vacuum.
Next on the drivers side of the t.c. at the front where the diapfram is there is a cover plate remove and lever the locking collar free.

The vac lines also go brittle and crack so one may have slipped off, remove the rubber gearshift boot and check where the lines attach to the switch.