Hello
I have a 1997 manual transmission, diesel 125 hp series 90, 147000 km, mine has permanent 4wd and a center differential.
I almost got stuck in a rocky and muddy stream with ice cold water (4300 m altitude, Chilean Altiplano). To get out, I had to reverse in low gear and step on the gas more than I liked. When the rear wheels got solid traction again after spinning, there was a nasty mechanical bang but the car got out of the stream.
So now the transfer case lock won't disengage, which as you know is nasty on pavement. I'm still driving in search of a mechanic who is competent to fix it. Thing is, in Chile, the Prado 90 is very rare and no one can get parts for it.
I removed the connector of the actuator on the "extension housing" and there was mud in it so I cleaned it. No improvement.
I have all the official Toyota manuals, but there's not a word about the actuator.
I removed the actuator. It consist of a magnet that can brake a disk or not. The disk is connected to a plastic cog (gear) of about 25mm diamater.
When I turn on the ignition, the diff lock light does not come on. All other lights do.
I would expect that if the actuator was bad, that there is no lock engaged.
So I'm getting the impression that something inside other than the actuator is mechanically broken.
With all 4 wheels off the ground and in 1st gear, the rear propeller shaft could be turned by hand but the front one couldn't.
With all 4 wheels off the ground and in neutral, both propeller shafts could be turned by hand.
With all 4 wheels off the ground and the motor running in 1st gear, the front wheels turned but the rear wheels didn't.
With all 4 wheels off the ground and the motor running in low gear, all wheels turned.
The 20 Ampere DIFF fuse is OK.
Iīm reluctant to start getting the transfer case out and apart without access to spare parts. I think I will have to drive to Argentina like this, where the Prado 90 is common, as I am told.
A few months ago, I had a similar incidence when stuck in clay, and the transfer case failed to unlock for a while. But after a short time, the problem disappeared.
Questions:
- Should the diff lock light come on when the key is turned to on?
- When the actuator is inactive, is diff lock off or on?
- Any other ideas how I could get rid of the lock until I find a mechanic?
Sorry for the very long post. Greetings from sunny and windy Calama, Chile.
I have a 1997 manual transmission, diesel 125 hp series 90, 147000 km, mine has permanent 4wd and a center differential.
I almost got stuck in a rocky and muddy stream with ice cold water (4300 m altitude, Chilean Altiplano). To get out, I had to reverse in low gear and step on the gas more than I liked. When the rear wheels got solid traction again after spinning, there was a nasty mechanical bang but the car got out of the stream.
So now the transfer case lock won't disengage, which as you know is nasty on pavement. I'm still driving in search of a mechanic who is competent to fix it. Thing is, in Chile, the Prado 90 is very rare and no one can get parts for it.
I removed the connector of the actuator on the "extension housing" and there was mud in it so I cleaned it. No improvement.
I have all the official Toyota manuals, but there's not a word about the actuator.
I removed the actuator. It consist of a magnet that can brake a disk or not. The disk is connected to a plastic cog (gear) of about 25mm diamater.
When I turn on the ignition, the diff lock light does not come on. All other lights do.
I would expect that if the actuator was bad, that there is no lock engaged.
So I'm getting the impression that something inside other than the actuator is mechanically broken.
With all 4 wheels off the ground and in 1st gear, the rear propeller shaft could be turned by hand but the front one couldn't.
With all 4 wheels off the ground and in neutral, both propeller shafts could be turned by hand.
With all 4 wheels off the ground and the motor running in 1st gear, the front wheels turned but the rear wheels didn't.
With all 4 wheels off the ground and the motor running in low gear, all wheels turned.
The 20 Ampere DIFF fuse is OK.
Iīm reluctant to start getting the transfer case out and apart without access to spare parts. I think I will have to drive to Argentina like this, where the Prado 90 is common, as I am told.
A few months ago, I had a similar incidence when stuck in clay, and the transfer case failed to unlock for a while. But after a short time, the problem disappeared.
Questions:
- Should the diff lock light come on when the key is turned to on?
- When the actuator is inactive, is diff lock off or on?
- Any other ideas how I could get rid of the lock until I find a mechanic?
Sorry for the very long post. Greetings from sunny and windy Calama, Chile.
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