REPAIR OF MOTOR AND GEAR BOX
Remove motor and gear box from mixer body. (Refer to TM 53895-372-20.)
Remove two screws (19, fig. 4-2) and lockwashers (20) at commutator end cap (26) and re-move motor
Remove armature (7), bearing (6) and shim(s) (2) from motor casing.
Remove two setscrews (3) and lockwashers (4) securing drive end cap (5) to gear box; remove drive end cap
Press out bearing (6).
Remove screw (16) and nut (17) securing sleeve (18) to commutator end cap (26) and remove sleeve.
g. Remove six screws (24) and lockwashers (25) securing commutator end cap (26) to motor casing and
remove commutator end cap.
Lift commutator end cap (26) enough to pull back on springs and release two brushes (15) with leads
Remove terminal nut (21), lockwasher (8), two flat washers (9), bushing (10), flat washer (11), two electrical
leads (12), flat washer (13) and terminal (14) and remove brushes (15).
Remove brush set (27) by drilling out rivets.
Remove woodruff key (9, fig. 4-3), bearing (12), and loosen collar setscrews (14) and remove collar (13).
Remove base plate (15) and gasket (16) from gear box (1).
m. Remove thrust bearing (17), brake spring (18), brake plate (19), and brake disk (20) from worm gear and
shaft assembly (21).
Remove worm gear and shaft assembly (21, fig. 4-3), shim washer (22), and thrust bearing (23) from gear
Remove worm gear shaft (8), spacer (4), and flange bearing (3) from gear box.
Press out oil seal (11) from base plate (15).
Remove bushing (2) from gear box.
Remove lock ring (5) from gear shaft and remove gear (6), bearing (10), and woodruff key _ (7).
Clean all parts in SD-2 drycleaning solvent and inspect for wear or damage.