Fluids
Baja
Joined: Mar 2010
Posts: 5,584
Likes: 7
From: Pittsburgh PA suburbs.
The only way to stop the wheels from turning if you wanted or needed to is to lock the Parking Brake as it clamps a brake drum onto the driveshaft. That is why it is a parking brake, intended to keep the vehicle from rolling on an incline. It is not a conventional Emergency Brake as lots of new owners seem to think.
While it is up in the air, also check the condition of the rotoflex.
You should also service the wheel bearings.
While it is up in the air, also check the condition of the rotoflex.
You should also service the wheel bearings.
Thread Starter
|
Mudding
Joined: Jan 2012
Posts: 137
Likes: 0
From: Vancouver, Canada
Thanks - Sorry not following though ... If wheels turn while in park, why doesn't my truck roll down the hill?
That is perfectly normal for the wheels to turn like that, thats how a differential works,
It allows the other wheels to turn at different speeds.
The transfer case is actually a differential, thats how you can turn tight corners, it allows the front and rear prop shafts to turn at different speeds.
Locking the center differential (CDL) locks both prop shafts together which sends equal power to each.
Trying to turn a sharp turn on dry pavement with the CDL engaged can blow the t-case.
With the truck in the air lock the CDL, then spin the wheels.
It allows the other wheels to turn at different speeds.
The transfer case is actually a differential, thats how you can turn tight corners, it allows the front and rear prop shafts to turn at different speeds.
Locking the center differential (CDL) locks both prop shafts together which sends equal power to each.
Trying to turn a sharp turn on dry pavement with the CDL engaged can blow the t-case.
With the truck in the air lock the CDL, then spin the wheels.
If you put the back to wheels on the ground then the front 2 wheels and the front prop shaft would turn but not the back wheels.
Put all four wheels on the ground and non of them turn because now there is resistance on all four wheels.
The wheels with the least resistance will turn, even while under power.
Trust me, its normal.
If you go to the tech section there is a cool video on how a differential works.
Thread Starter
|
Mudding
Joined: Jan 2012
Posts: 137
Likes: 0
From: Vancouver, Canada
Thanks!
Glad its normal .... still don't fully understand the theroy but will give the tech section acticle a look out of interest.
On an unrelated note, got all the fluids bled and after bleeding the brakes realized that BOTH front pistons were leaking - sighs. Well I guess it makes sense again why the thing stopped like a train - the combination of razor thin rotors and probably brake fluid soaked pads. The PO was really somethin.
It's abit weird that both happen to be leaking - hopefully there isn't an underlying problem that caused them to overpressurize and blow the seals - ABS? Which BTW is disconnected.
And again - no local Rover parts so looks like I will have to wait yet another week to get it off the blocks while I wait for my piston seal kit to come in.
Glad its normal .... still don't fully understand the theroy but will give the tech section acticle a look out of interest.
On an unrelated note, got all the fluids bled and after bleeding the brakes realized that BOTH front pistons were leaking - sighs. Well I guess it makes sense again why the thing stopped like a train - the combination of razor thin rotors and probably brake fluid soaked pads. The PO was really somethin.
It's abit weird that both happen to be leaking - hopefully there isn't an underlying problem that caused them to overpressurize and blow the seals - ABS? Which BTW is disconnected.
And again - no local Rover parts so looks like I will have to wait yet another week to get it off the blocks while I wait for my piston seal kit to come in.
The wheels turn when all four are off the ground because the center differential is allowing them to turn because it is by-passing the transmission.
If you put the back to wheels on the ground then the front 2 wheels and the front prop shaft would turn but not the back wheels.
Put all four wheels on the ground and non of them turn because now there is resistance on all four wheels.
The wheels with the least resistance will turn, even while under power.
Trust me, its normal.
If you go to the tech section there is a cool video on how a differential works.
If you put the back to wheels on the ground then the front 2 wheels and the front prop shaft would turn but not the back wheels.
Put all four wheels on the ground and non of them turn because now there is resistance on all four wheels.
The wheels with the least resistance will turn, even while under power.
Trust me, its normal.
If you go to the tech section there is a cool video on how a differential works.
Thread Starter
|
Mudding
Joined: Jan 2012
Posts: 137
Likes: 0
From: Vancouver, Canada
Sighs ...
Thread
Thread Starter
Forum
Replies
Last Post
Chrisinhouston
Discovery II
4
Dec 13, 2007 05:59 PM
