Transfer Case Characteristics...
Thread Starter
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Elder User
Joined: Aug 2004
Posts: 646
Likes: 3
From: Derbyshire, UK.
Transfer Case Characteristics...
Hi,
I know that a bronco is normally 2wd with selectable 4wd. When 4wd is selected does the xfer box lock both prop shafts together or is there an LSD (etc.) between them? In other words does prolonged use in 4wd on a hard surface cause transmission windup and eventually bust things?
I'm used to a fulltime 4wd truck (Land Rover 90) so I'm trying to get comparisons of the technologies you guys use.
Cheers
Simon
I know that a bronco is normally 2wd with selectable 4wd. When 4wd is selected does the xfer box lock both prop shafts together or is there an LSD (etc.) between them? In other words does prolonged use in 4wd on a hard surface cause transmission windup and eventually bust things?
I'm used to a fulltime 4wd truck (Land Rover 90) so I'm trying to get comparisons of the technologies you guys use.
Cheers
Simon
Senior User
Joined: Jan 2003
Posts: 229
Likes: 0
From: North Carolina
When 4WD is engaged on a Bronco, the transfer case causes the front driveshaft to spin. The front driveshaft and rear driveshaft are spinning at the same speed which does not allow for a difference in speed between the front and rear wheels. This is what can cause the axles to bind when used on a hard surface. Fulltime 4WD vehicles have a center differential or viscous coupling to allow for this difference in speed between front and rear wheels so if the front wheels start to spin, torque gets transferred to the slower moving rear wheels. Part time 4WD is much more practical in most places and causes less wear on parts due to fewer parts constantly spinning/wearing.
