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TECHNICAL BULLETIN
TYPE OF AXLE:
SINGLE AXLE, without Driver Controlled Main
Differential Lock (DCDL)
TANDEM AXLE, without Driver Controlled Main
Differential Lock (DCDL), with Inter-Axle
Differential (IAD)
ADDITIONAL AXLE
PREPARATION INSTRUCTIONS:
Single and Tandem Axles with DCDL, Threaded
Shift Assembly — Refer to Technical Bulletin,
TP-9579B
Single and Tandem Axles with DCDL, Bolted On
Shift Assembly — Refer toTechnical 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.
16579/22882
Printed in the USA
Instructions for Vehicle
Towing or New Vehicle
Drive-Away (Piggybacking)
1. Apply the vehicle parking brakes using the
switch inside the cab of the vehicle.
NOTE: Single Axle continue with Step 5. Tandem
Axle continue with Step 2.
2. Shift the transmission into neutral and start the
vehicle's engine.
3. Shift the IAD to the locked (engaged) position
using the switch inside the cab of the vehicle.
The IAD indicator light in the cab will go on.
4. Stop the engine.
NOTE: Remove both axle shafts from the axle(s)
that will remain on the road when the vehicle is
transported. Continue with Step 5 for BOTH axle
shafts.
5. Remove the stud nuts or capscrews and the
washers from the flange of the axle shaft.
Figure 1 .
6. Loosen the tapered dowels, if used, in the
flange of the axle shaft using one of the two
following methods. Figure 1 .
Do not use a chisel or wedge to loosen the axle
shaft and dowels. The chisel or wedge can
damage the hub, axle shaft and gasket, if used.
Figure 1
ROUND
DRIVING
LUGS
© Copyright Meritor Automotive, Inc., 1995
Axle Preparation
CAUTION
STUD NUT
GASKET
WASHER
DOWEL
WASHER
AXLE SHAFT
(FLANGE)
CAPSCREW
TP-9579A
Issued 7-95
STUD
HUB
TP-9579A
Issued 7-95
Page 1
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