MAINTENANCE MANUAL - Meritor

Driver-Controlled Main Differential Lock
2. Compress the shift shaft spring as required
and install it between the back of the fork and
differential wall inside the differential. Figure
6.17.
SHIFT SHAFT
SPRING
INSTALL SPRING
BEHIND FORK
3. Align the spring and bore in the shift fork with
the shift shaft bore in the differential.
4. Install the shift shaft through the bore in the
differential, fork and spring until it is against
the shift fork. Figure 6.18.
SHIFT FORK
SHIFT SHAFT
Figure 6.17
Figure 6.18
5. If required, lubricate a new O-ring with axle
lubricant. Install the O-ring into the piston
groove.
6. Install the piston and O-ring assembly into the
shift cylinder, bevel end first. Push on the piston
until it is against the bottom of the cylinder. Figure
6.19.
BEVEL END
SHIFT CYLINDER
Figure 6.19
7. Apply a continuous 0.06-inch (1.5 mm) diameter
bead of Loctite® flange sealant, Meritor part
number 2297-D-7076, around the DCDL cylinder
threads..
8.Turn the shift cylinder and piston assembly to
the right until it bottoms in the differential casting
bore. Figure 6.20.
Figure 6.20
9. Position the shift collar over the fork. The large
splines of the collar must face toward the main
differential. Use a rubber mallet to tap the shift
collar through the nubs of the shift fork. Figure
6.21.
92 MAINTENANCE MANUAL