Hub locks not engaing on front wheels

Submitted: Saturday, Jun 29, 2002 at 00:00
ThreadID: 1379 Views:1330 Replies:1 FollowUps:2
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Hi
I wonder if anyone can help, i have an inported Lancruiser Prado turbo disel automatic on a 1990 vehicle. The hub lock button on the dash is not locking the front wheels(it used to) and only the rear wheels are locked, Toyota Uk are being a pain in the A*** as they have no idea how the thing works, when it did work, when you disenged the hub lock it disengaged with a soft thud as you drove away in high ratio anone got any ideas as to why its not working now so i can give to toyota uk it has power hubs on the front wheels

Regards
Kevin
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Reply By: GB - Monday, Jul 01, 2002 at 00:00

Monday, Jul 01, 2002 at 00:00
Sounds like it may have an ADD system (Automatic Disconnecting Differential) as in the 4 runner/surf of the same vintage. This is a vacuum operated system so you may have a leak somewhere.
Workshop manuals for the 4 runner/hilux have some info on ADD.
Also try:

http://groups.yahoo.com/group/90scool/
http://www.off-road.com/toyota/tech/add/index.htm

Good luck!
AnswerID: 4541

Follow Up By: Kevin Emery - Tuesday, Jul 02, 2002 at 00:00

Tuesday, Jul 02, 2002 at 00:00
Hi
Many thanks to Gb for the information i wanted
Cheers
Kevin
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FollowupID: 1944

Follow Up By: Kevin Emery - Thursday, Jul 04, 2002 at 00:00

Thursday, Jul 04, 2002 at 00:00
Hi
I have now been told by Toyota that the Power hubs have burned out and i will need to replace the 2 front units do you know where i can get them from as Toyota uk have gone all Stupid on me again... and also if you can get manul locking hubs.

Regards
Kevin
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FollowupID: 1971

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