TP-9579B
Revised 12-09
TP-9579B
16579
Revised 12-09
Printed in the USA
© Copyright Meritor Automotive, Inc., 2009
Page 1
Axle Preparation
Instructions for Vehicle
Towing or New Vehicle
Drive-Away (Piggybacking)
TYPE OF AXLE:
SINGLE AXLE, with Driver Controlled Main
Differential Lock (DCDL — threaded shift
assembly)
TANDEM AXLE, with Driver Controlled Main
Differential Lock (DCDL — threaded shift
assembly), with Inter-Axle Differential (IAD)
ADDITIONAL AXLE
PREPARATION INSTRUCTIONS:
Single and Tandem Axles without DCDL, and
Tandem with IAD — Refer to Technical Bulletin,
TP-9579A
Single and Tandem Axles with DCDL, Bolted On
Shift Assembly — Refer to Technical Bulletin,
TP-9579C
These instructions are for vehicles equipped with
Meritor single or tandem rear drive axles.
The instructions supersede all other instructions
for the purpose of transporting vehicles for service
or new vehicle drive-away dated before April 1995,
including those contained in Meritor maintenance
manuals.
When transporting a vehicle with the wheels of
one or both drive axles on the road, it is possible to
damage the axles if the wrong procedure is used
before transporting begins. Meritor recommends
that you use the following procedure.
Before Towing or
Drive-Away (Piggybacking)
WARNING
To prevent serious eye injury, always wear safe eye
protection when you perform vehicle maintenance
or service.
WARNING
Engage the parking brake to prevent the vehicle
from moving before you begin maintenance or
service procedures that require you to be under
the vehicle. Serious personal injury can result.
1.
Apply the vehicle parking brakes using the
switch inside the cab of the vehicle.
2.
Shift the transmission into neutral and start the
vehicle’s engine.
3.
Shift the DCDL to the unlocked (disengaged)
position using the switch inside the cab of the
vehicle. The DCDL indicator light in the cab will
go off. Shift the IAD to the unlocked
(disengaged) position using the switch inside
the cab of the vehicle. The IAD indicator light in
the cab will go off (if equipped).
4.
Stop the engine.
5.
Refer to Table A and identify which axle shafts
must be removed based on how the vehicle
will be towed.
6.
On axles equipped with a DCDL, the shift collar
splines must be engaged with the differential
case splines before removing the axle shaft.
Engage the DCDL shift collar using the Manual
Engaging Method as follows.
Table A
Single Axles
Remove both axle shafts.
Tandem Axles
Forward Axle (Towing from Front):
No need to remove axle shafts.
Forward Axle (Towing from Rear):
Remove both axle shafts.
Rear Axle (Towing from Front):
Remove both axle shafts.
Rear Axle (Towing from Rear):
No need to remove axle shafts.
