TM 10-4610-215-24TM 08580A-24/2b. Removal. Remove the backwash timer assembly as described in paragraph 2-56.CAUTIONThe backwash timer is a delicate piece of equipment. Dirt orgrease can damage the unit. Make sure work space is clean anduncluttered.c. Sub–PlateComponentsDisassemble. (Figure 3–22)(1) Open timer cover.(2) Using Allen wrench, loosen get screw (1). Remove indicator knob (2).(3) Remove four panel retaining screws (3) and fold out sub-plate (4).(4) Remove retainer nut (5) and remove reset switch (6) from sub-plate (4).(5) Remove retainer nut (5) from switch (6).d. PrintedCircuitBoardandTimerMotorDisassembly. (Figure 3-23)(1) Identify, tag, and disconnect electrical wires (1) from terminal strips (2) and (3) in timer box (4).(2) Remove five screws (5) and printed circuit board (6) from timer box (4).(3) Remove two screws (7), two compression springs (8) and timer motor (9) from timer box (4).(4) Remove four screws (10), ground lug (11), two screws (12), and plate (13) from timer box (4).(5) Remove two nuts (14), two screws (15), two washers (16), and micro switch (17) from plate (13).(6) Remove two nuts (18), two screws (19), two washers (20), two insulators (21), and micro switch (22)from bracket (23).(7) Remove two screws (24) and bracket (23) from timer box (4).(8) Remove white controller cam (25) from timer box (4).(9) Remove gasket (26) from around edge of timer box (4). Discard gasket (26).3-98
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