Section 8: Towing Instructions; Before Towing Or Drive-Away - Meritor MS-113 Maintenance Manual

Section 8
Towing Instructions
Towing Instructions Section 8
WARNING
To prevent serious eye injury, always wear safe
eye protection when you perform vehicle
maintenance or service.
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

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.
NOTE: Remove both axle shafts from the axle(s)
that will remain on the road when the vehicle is
transported.
2. Remove the capscrews from the flange of the
axle shafts. Figure 8.1.
Figure 8.1
1
2
1 CAPSCREW
2 AXLE SHAFT FLANGE
3 AXLE SHAFT HUB
Page 36
3
Copyright 2002
ArvinMeritor, Inc.
3. Identify each axle shaft that is removed from
the axle assembly so they can be installed in
the same location after transporting or repair
is completed. Example: Match mark a mating
axle shaft and hub.
4. Remove the axle shaft from the axle assembly.
Figure 8.1.
5. Install a cover over the open end of each hub
where an axle shaft was removed. This will
prevent dirt from entering the bearing cavity
and loss of lubricant.
NOTE: If an air supply will be used for the brake
system of the transported vehicle, continue with
Steps 6 and 7, otherwise continue with Step 8.
6. Connect an auxiliary air supply to the brake
system of the vehicle that is being transported.
Before moving the vehicle, charge the brake
system with the correct amount of air pressure
to operate the brakes. Refer to the instructions
supplied by the vehicle manufacturer for
procedures and specifications. If an auxiliary air
supply is not used, continue with Step 8.
7. When the correct amount of air pressure is in
the brake system, release the parking brakes
of the vehicle that is being transported.
Step 8 is not required.
WARNING
When you work on a spring chamber, carefully
follow the service instructions of the chamber
manufacturer. Sudden release of a compressed
spring can cause serious personal injury.
8. If there are spring parking brakes on the axle(s)
that will remain on the road when the vehicle is
transported, and they cannot be released by air
pressure, manually compress and lock each
spring so that the brakes are released. Refer to
the manufacturer's instructions.
Maintenance Manual MM-0230
Issued 07-02