Change components as required.
If the gearbox (8) is being replaced fit the drive sprocket. See unit maintenance procedure
Cover the mating face of the motor (7) with gasket sealing compound.
Fit the gearbox (8) to the motor (7) and secure in place with the ring of bolts.
Fit the motor and gearbox assembly to the launch beam drive with nuts (1), bolts (6), flat
washers (3), lock washers (2), shim pack (5) and packer (4).
Torque bolts (6) to 339 lb/ft (460Nm).
Fit the drive chain (9). See unit maintenance procedure 5-037.
Adjust the drive chain. See unit maintenance procedure 5-039.
Fit the hydraulic pipes to the motor (7) at the positions noted during removal.
Fit the pipe to the brake unit (10) at the position noted during removal.
Fill the gearbox with oil. See unit maintenance procedure 5-038.
Follow on tasks
Check that the drive sprocket (12) is in alignment with the sprocket (15) on the drive roller
If required the drive sprocket can be aligned by undoing the socket head screws (13) and
adjusting the position of the sprocket on the shaft (14).
When the drive sprocket (12) is in the correct position, tighten the socket head screws (13).
Carry out functional checks on the launch beam drive. Operate the launch beam drive in
accordance with the operator's manual TM 5-5420-279-10.