Phantom Mountaineer

[Mutineer]

OK I was answering another thread and remembered this, thought it mught be a good laugh and a lesson learned.

I removed the front DS when the CV joint went bad(the back joint to the front DS).

I parked the truck on my 20 ft trailer with 3' Dub on the rear.

:shifty_ey when I reterned from work the next day, the truck's rear wheels were on the ground and the front of the trailer was in the air...

I had NO IDEA WTF was going on I thought someone was playing a trick on me..

Next time this happened I took video (WAAAAAAY too long to post) I parked it on the hill of my driveway at 0700 and came home at 1800 to find the front of the truck almost in the road.
again.

So this is a very slow crawl donw a hill of about 20 ft in approx 15 hours... ?!

Has anyone had this happen before and the EXACT reason this happens? I am thinking some kind of clutch in the AWD t-case was slipping since it didnt have a connection to the ft tires to hold it still.... :shifty_ey

EDIT: This is an 5.0 AWD automatic transmission placed in Park.

 

[techieman33]

I'm pretty sure the parking brake only holds the front tires, so without the front shaft it can still move.

 

[Mutineer]

I'm pretty sure the parking brake only holds the front tires, so without the front shaft it can still move.

the internal park lock? Im not trying to be stupid, I just want to undersatnd...The Parking brake is in the "drum" on the rear Rotors...

So the Park slection in the transmission stops the input from rolling, but in the t-case, is there a clutch or something that has to have both ground contact from front and rear to stay stopped?

Daniel

 

[Dan Whitaker]

The parking brake holds the rear.

The parking lock in the tranny locks the front axle.

 

[Mutineer]

The parking lock in the tranny locks the front axle.

Wow so its just dumb luck it never did it before.... I will correct that this evening.

Thanks!

 

[IZwack]

The AWD vehicle will crawl forward (or backwards) without a front driveshaft as only ~50% of the force from the transmission's Park pin is being applied to the ground. The silicon in the viscous coupling allows the rear output flange of the AWD transfer case to slip over time with enough force being applied to the vehicle. This slip is what allows an AWD vehicle to make turns on the stret without locking up all of the wheels.

 

[Mutineer]

The AWD vehicle will crawl forward (or backwards) without a front driveshaft as only ~50% of the force from the transmission's Park pin is being applied to the ground. The silicon in the viscous coupling allows the rear output flange of the AWD transfer case to slip over time with enough force being applied to the vehicle.

AHA! Thanks IZWACK. I knew it was something like that. Its freaky when it happens to you though...

:bsnicker: :exp:

Daniel

 

[Xan]

HAHAHA i've done this, except i knew about the rolling i went to a huge furniture store with my cousin and we were in the place for hours looking at home theatres and such, then i hear over the intercom would the owner of a black mercury mountaineer license plate blah blah blah please return to your vehicle. well i forgot to put the e-brake on and it happened to roll out of my parking spot about 5 feet back haha. i was a little embarrassed but life goes on

 

[Mutineer]

HAHAHA i've done this, except i knew about the rolling

Good to know Im not alone