Spicer Drive Axles Application Guidelines - Manual (Page 82)

AXAG-0200 June 2009 82
Power Divider Operation
Power Flow and Torque Distribution (Cont’d)
With Lockout Engaged
(Inter-Axle Differential is Not Operating)
Lockout should only be engaged when both sides
are rotating at the same speed. Operation should be
limited to low-traction situations and should be
disengaged when normal traction returns. Failure to
do so will result in poor handling and damage to the
axle components.
Note:
Varied road surface conditions can result in unequal
torque distribution between the two axle assemblies.
CAUTION:
Prolonged operation with the
lockout engaged can damage axle and
driveline components.
1 - Input torque
2 - Lockout engaged
3 - Forward axle torque is transmitted from the
helical side gear through the pinion helical
gear, drive pinion, ring gear, wheel
differential and axle shafts.
4 - Rear axle torque is transmitted from the output
shaft side gear through the output shaft, inter-axle
driveline, drive pinion, ring gear, wheel
differential and axle shafts.
5 - Input torque (power flow) from the vehicle
driveline is transmitted directly to the helical side
gear and the output shaft. A positive drive is
provided to both axles for maximum traction under
adverse road conditions.