Transfer Case; Identification - Ford Ranger Maintaince And Repair Manual

TRANSFER CASE

Identification

View of the Borg−Warner model 13−54 with mechanical shift. Electronic shift and model
44−05 are similar
There are three transfer cases used on the Ranger, Explorer and Mountaineer. There are 2 versions of the Borg
Warner 13−54 (mechanical shift and electronic shift), a Borg Warner 44−05 (Control Trac) and an All Wheel
Drive (AWD) transfer case.
The Borg Warner 13−54, mechanical shift transfer case, is a 3−piece aluminum part time unit. It transfers
power from the transmission to the rear axle and when actuated, also the front drive axle. 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 at maximum legal road
speeds for extended distances without disconnecting the front and/or rear driveshaft.
The Borg Warner 13−54, electronic shift transfer case, transfers power from the transmission to the rear axle
and also the front drive axle, when electronically actuated.
This system consists of a pushbutton control, an electronic control module, an electric shift motor with an
integral shift position sensor and a speed sensor.
The electric shift motor, mounted externally at the rear of the transfer case, drives a rotary helical cam. The
cam moves the 2WD−4WD shift fork and 4H−4L reduction shift fork to the selected vehicle drive position.
The system has no selectable Neutral (N) setting.
The manufacturer recommends that the Borg Warner 13−54 transfer case equipped vehicles should not
be operated in 4WD (whether HI or LOW) mode on dry pavement. Severe driveline torsional wind−up
will occur, possibly damaging the drivetrain components.
The Borg Warner 44−05 transfer case operates in the same manner as the 13−54, except that it also houses a
transfer case clutch. This clutch, which is controlled by the Generic Control Module (GEM), enables the
vehicle to be driven in 4−wheel drive on dry pavement by cycling the clutch to compensate for different front
and rear driveshaft speeds (as in turning). The system has a dealer installable Neutral (N) position mode.
TRANSFER CASE 793