MAINTENANCE MANUAL - Meritor

Engagement or Lockout of the DCDL
WARNING
During DCDL disassembly or differential removal,
when the DCDL is in the locked or engaged
position and one of the vehicle’s wheels
is raised from the floor, do not start the engine
and engage the transmission. The vehicle can
move and cause serious personal injury. Damage
to components can result.
Park the vehicle on a level surface. Block the
wheels to prevent the vehicle from moving.
Support the vehicle with safety stands. Do not
work under a vehicle supported only by jacks.
Jacks can slip and fall over. Serious personal
injury and damage to components can result.
Manual Method
Use the following manual engaging method to
shift the DCDL into the locked position:
If an auxiliary air supply is not available or if the
differential differential is to be stored for later
use, use this manual engaging method for the
DCDL. Figure 6.2 and Figure 6.3.
AIR HOSE
Threaded DCDL
STORAGE
HOLE
CYLINDER
MAINTENANCE MANUAL
MANUAL ENGAGING
CAPSCREW
Figure 6.2
Driver-Controlled Main Differential Lock
TOP STORAGE HOLE
FOR MANUAL ENGAGING
CAPESCREW
MANUAL
ENGAGING
CAPSCREW
PLUG AND
GASKET
FIXED CAPSCREW DCDL
BOTTON STORAGE HOLE
FOR PLUG AND GASKET
AIR LINE
CYLINDER
COVER
WIRE
OPERATING POSITION
HOLE
Figure 6.3
1. Park the vehicle on a level surface. Block the
wheels to prevent the vehicle from moving.
2. Remove the drain plug from the bottom of
the housing and drain the lubricant.
3. Use a jack to raise the left-hand wheel of
the drive axle.
4. Place a jackstand under the left-hand spring
seat to hold the vehicle in the raised position.
5. Disconnect the driveline from the input fork
of the differential.
6. Disconnect the vehicle air line from the
inter-axle differential and main differential
lock actuator assemblies.
7. Remove the plug and gasket from the hole in
the center of the Threaded DCDL cylinder or
flanged fixed capscrew DCDL.
8. Remove the manual engaging capscrew from
the top storage hole in the cylinder cover or
the shift tower with the threaded type shift assembly.
Figure 6.2 and Figure 6.3.
NOTE:
For a fixed capscrew DCDL shift assembly,
the storage hole for the plug and gasket
is the opposite end of the storage hole
for the manual engaging capscrew. Figure
6.3.
9. Install the plug and gasket into the bottom
storage hole in the cylinder cover or in the
shift tower.
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