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TM 10-6640-239-13 5-21 5-12.    SUMP PUMP. This task consists of: a.    Remove b.   Install INITIAL SET-UP Tools Required General Mechanics Tool Kit, (Appendix B, Section III, Item 1) Materials/Parts Required Heat Shrink Tubing Lockwashers, (8) Equipment Condition Water Level Regulator Removed (Paragraph 4-51) General Safety Instructions WARNING ELECTRICAL SHOCK Before performing any  maintenance actions on electrical equipment, ensure  all electrical power has been turned off.   Failure to comply with this warning may result in serious injury or death. REMOVE Remove Sump Pump.  See Figure 5-8. a. Unplug sump pump (1) connectors from wall receptacle inside cabinet W. b. In cabinet V loosen two unions (2) and remove drain trap (3) from sink drain (4). c. Remove heat shrink tubing, tag and disconnect two electrical leads at wire splices (5). d. Loosen two electrical strain reliefs (6) from top of cover (7). e. Lift and position cover (7) off of drain tank (8) to gain access to components. f. Disconnect discharge hose (9) from top of sump pump (1). g. Remove four nuts (10), washers (11), two spacers (12), and u-bolts (13) securing sump pump (1) to retaining bracket (14). h. Remove eight screws (15), washers (16), lockwashers (17), nuts (18) and retaining bracket (14) from drain tank stand (19).  Discard lockwashers. i. Remove two screws (20), washers (21), and switch (22) from retaining bracket (14). j. Remove sump pump (1) from drain tank (8).


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