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 TM 55-1905-242-14
0190 00
ASSEMBLY (continued)
14. Tap the assembled thrust plate (23 and 38) into position against the face of the covers (14 and 25). Trim the exposed ends
of the pocket seals (20 and 39) square and flush with the thrust plates.
15. Install the backup ring (36) in the outside groove of the shaft end cover (25).
16. Lubricate the O-ring (34) with grease and install it next to the backup ring (36) so that it is on the side of the backup ring
nearest to the thrust plate (38) end of the shaft end cover (25). Give the O-ring (34) an additional coat of grease.
17. Install the backup ring (35) in the inside groove in the brake piston (32).
18. Lubricate the O-ring (33) and install it next to the backup ring (35) so that it is on the same side as the backup ring nearest
to the large bore of the brake piston (32). Give the O-ring an additional coat of grease.
19. Check that the pin (37) is installed in the brake piston (32) to the shaft end cover (25). Ensure that the backup
rings (35 and 36) do not extrude and get pinched between the mating diameters of the brake piston and the shaft
end cover.
20. Place the key (27) in the keyway of the motor shaft (24), then press the sun gear (26) over the motor shaft. Ensure that
the sun gear bottoms against the motor shaft shoulder.
21. Place the shaft end cover (25) on the workbench with the thrust plate (38) facing up and install the motor shaft assembly
through the bushing seal (43). Take care not to extrude the gasket (44).
22. Lubricate the O-rings (29 and 31) with grease and install one on each side of the gear housing (30). Give the O-rings an
additional coat of grease.
23. Assemble the gear housing (30) over the thrust plate (38) on the shaft end cover (25) so that the gear housing and the shaft
end cover are concentric. Ensure that the pin (37) locates in the gear housing. Tap the gear housing in place.
NOTE
If the gears are not being replaced with new parts, assemble the gears with respect
to the port end shaft as match marked during Disassembly.
24. Take the matched planet gears (28) and install them so that they pilot into the roller bearings (48) in the shaft end
cover (25) and mate with the sun gear (26).
25. Install the port end cover (14) onto the gear housing (30) so that the hubs of the gears (26 and 28) pilot into the roller
bearings (19). The thrust plate (23) should also pilot into the gear housing. Use a soft hammer to seat the port end cover,
taking care that the O-rings (29 and 31) do not get pinched during assembly.
26. Wrap the threads of the pipe plugs (6) with antiseizing sealant tape and install the pipe plugs (6) in the port end
cover (14).
27. Install the capscrews (12 and 13) and tighten evenly in stages to a torque of 200 lb-ft (271 Nm). After tightening the
capscrews, ensure that the motor shaft (24) can be rotated by hand.
0190 00-6
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