Mud-club

Vehicle & Technical => Range Rover => Topic started by: way2deep on May 20, 2012, 17:20:17

Title: has my diff locked
Post by: way2deep on May 20, 2012, 17:20:17

hi,jacked up my rangie to check the front wheel bearings and the wheel would not spin ,thought with one wheel off the ground it would spin freely? it's a 200 tdi with a hi low  permanent diff lock box..thanks for any advice..robbie

Title: Re: has my diff locked
Post by: lambert on May 20, 2012, 20:54:38

One in the air won't spin as the other 3 effectively hold the diffs still. Two in the air on opposite axles I.e. one front one rear will spin.

Title: Re: has my diff locked
Post by: way2deep on May 20, 2012, 21:59:26

thanks mate.that's good news then...thought i had a major problem :embarrassed:

Title: Re: has my diff locked
Post by: Saffy on May 21, 2012, 07:08:22

What type of box is on it then as I thought it be a perm 4 wheel drive but without difflock (if it hasn't a lever) like some of the D2 with the lt230 that hasn't the difflock mech fitted. Can't see it driving around with difflock on all the time unless there some other magic on a rangie (never owned one).

Title: Re: has my diff locked
Post by: James.Harwood on May 21, 2012, 08:19:52

If there is no diff lock lever then you probably have the borg warner transfer box (I know all the P38's did). This box doesn't use a 'traditional' diff, insead it has a viscous coupling on the front output of the transfer box. It should not be possible to jack up 1 wheel and spin it.

Title: Re: has my diff locked
Post by: carls200tdi on May 21, 2012, 17:38:24

with the viscous coupling with one front wheel jacked up you should be able to turn it with a wheel brace very slowly with some resistance if you cant turn it at all your viscous coupling could be seized i used to have a rangie with viscous coupling and thats how you check its working.

Title: Re: has my diff locked
Post by: muddyman on May 21, 2012, 19:49:33

Quote from: carls200tdi on May 21, 2012, 17:38:24

with the viscous coupling with one front wheel jacked up you should be able to turn it with a wheel brace very slowly with some resistance if you cant turn it at all your viscous coupling could be seized i used to have a rangie with viscous coupling and thats how you check its working.

I second that I have a range rover with the borg warner tbox and that is how i check the VC

Title: Re: has my diff locked
Post by: Range Rover Blues on July 05, 2012, 21:46:56

Viscous diff more or less came in with concealed hinges in 1988/89.

They are chain-driven (to reduce noise and backlash) and have a thermo-viscous hub ahead of a traditional 50/50 diff.  They are menat to lock up when one output spins dramatically faster than the other, though doing this is what leads to their demise.

With one wheel in the air you should be able to tighten the wheel nuts, or loosen them unless you jar on the wrench which will loosen them.

There is a correct torque setting for checking but basically if you can turn it really slowly then it's ok.