3-63. TRUCK ASSEMBLY (cont)
Remove four nuts (41), lockwashers (42), and capscrews (43). Remove safety plate (44).
Chain or block traction motor-gear unit to keep motor from falling.
Suspension bolt must be removed in an open pit.
Remove cotter pins (45), nuts (
46), flat washers (47), suspension bolt (48), and flat washer (49). Remove pad
Place wooden blocking under traction motor (51) for support, remove chain or blocking, and lower traction motor-
gear unit on supports.
Remove cotter pin (52), pin (53), two cotter pins (54), and pin (55). Remove lower brake rigging (56). Remove
setscrew (57), collar (58), and collar nut (59), and adjusting screw (60). Remove adjusting screw from collar nut.
Chain outer equalizer (81) and inner equalizer (82) to frame assembly (61).
Components of the traction motor are heavy and may be awkward to handle. Use correct lifting
procedures, indicated lifting devices, and/or assistance from other personnel to avoid injury.
Use a suitable lifting device, connect to four corners of frame assembly (61), and lift frame assembly from
traction motor-gear-unit wheel-axle-assembly (62).
Lower frame assembly (61) to the floor.
There are four bolster spring assemblies on each truck. When removing spring cluster, note
position of bolster spring assembly for aid in installation.
Remove four spring clusters (63) and spring pads (64). Disassemble spring clusters as follows:
Remove nut (65), lockwasher (66), and capscrew (67).
Separate upper spring seat (68), three springs (69) and (70), bolster spring (71), and lower spring seat (72).
Disassemble bolster spring (71) by the following:
Remove nut (73) and bolt (74).
Remove two bolsters (75) from spring (76).