assembly, be sure that a clean work area with a dust and
remove snap ring (7). Then slowly release the pressure
grit free workbench is available.
on the spring plate until compression is removed from
brake springs (18).
DISASSEMBLY. To disassemble the swing transmission,
B. Remove spring plate (10), brake springs (18), piston
(23), friction discs (15), brake discs (14) and back-up
1. Remove drain plug (27) and drain the oil into a suitable
container. Remove capscrews (39), lockwashers (38), and
C. Remove and discard O-rings (19 and 21) and back-up
washer (37) to remove the swing pinion.
rings (20 and 22).
2. Remove input gear (12). Remove snap ring (6), and then
3. Remove primary planetary assembly (9) by lifting it
remove brake assembly (17). If it is necessary to dis-
straight out of housing (53). If it is necessary to disassemble
assemble the brake assembly, proceed as follows:
the primary planetary assembly, proceed as follows:
A. Place the brake assembly in a press with the motor
A. Drive roll pins (2) out with a suitable pin punch.
flange down. Apply pressure to spring plate (10). and
Figure 6D-3. Swing Transmission (53R3)