Testing 4wd
Posted: Mon Jan 21, 2013 12:39 pm
Starting from here...
http://www.igmaynard.co.uk/bongo/forum/ ... 52#p155852
... can someone check my thinking and/or expand on all this?
My understanding is that with three wheels on the ground and one front wheel jacked up off the ground, trying to turn that front wheel will tell you whether the VC is working. There are three scenarios in my head at the minute...
1. If it's been cooked and is locked up, then the wheel should not turn at all. If this is the case, you're running with permanent 4wd and this puts excess strain... where?
2. If it's working normally, then a 90 degree turn with the rated torque should take 30s.
3. If it's drained (or if the chain is broken??) then it's going to turn quite happily.
Presumably this has been discussed before - DemonAV's diagram/post has been referenced a few times. But looking to better understand it all before I go and jack up a wheel.
Should you warm the drive train by taking the van out and up to temperature first, or even is it worth doing the test both cold and warm??
Any help appreciated...
http://www.igmaynard.co.uk/bongo/forum/ ... 52#p155852
... can someone check my thinking and/or expand on all this?
My understanding is that with three wheels on the ground and one front wheel jacked up off the ground, trying to turn that front wheel will tell you whether the VC is working. There are three scenarios in my head at the minute...
1. If it's been cooked and is locked up, then the wheel should not turn at all. If this is the case, you're running with permanent 4wd and this puts excess strain... where?
2. If it's working normally, then a 90 degree turn with the rated torque should take 30s.
3. If it's drained (or if the chain is broken??) then it's going to turn quite happily.
Presumably this has been discussed before - DemonAV's diagram/post has been referenced a few times. But looking to better understand it all before I go and jack up a wheel.
Should you warm the drive train by taking the van out and up to temperature first, or even is it worth doing the test both cold and warm??
Any help appreciated...