Section 07-07: Transfer Case, 4x4 System, Service | 1996 F-150, 250, 350 (4x4), and Bronco Vehicles with Manual Shift Transfer Case; All Bronco and F-150 4x4 Vehicles with Electronic Shift Transfer Case Only Workshop Manual |
NOTE: Consult the vehicle owner's guide before towing any 4x4. There are speed and distance restrictions that vary from vehicle to vehicle.
The Borg-Warner 13-56 is a chain-driven transfer case (7A195) in which the shifts may be activated electrically or mechanically. The basic functions of this system are much the same as any other 4x4 transfer case. With the electronic shift transfer case, by touching the control switch on the instrument panel, the driver can select either 2- or 4-wheel high plus 4-wheel low range, if conditions require. With the manual shift transfer case, speed selection is controlled by a single-lever shift mechanism that provides neutral, 2-high, 4-high and 4-low.
The Borg-Warner 13-56 manual shift transfer case is a three-piece transfer case. The case (7005) is magnesium, except for F-350 applications which have an aluminum front case half and an opening for a power takeoff (PTO). It is a part-time transfer case for a power takeoff. The unit is lubricated by a positive displacement oil pump that channels oil flow through drilled holes in the rear output shaft. The pump turns with the rear output shaft and allows towing of the vehicle without disconnecting the rear driveshaft.
The input shaft, front output shaft, 4WD indicator switch, and shift lever are located on the front case half. The rear output shaft, output shaft bearing retainer (or slip-yoke type bearing retainer), and drain and fill plugs are located on the rear case half. Two types of bearing retainers are used: a rear fixed output circular case yoke and a slip-yoke type case yoke.