3-28. MAGNETIC REVERSER SWITCH (cont)
Install top terminal assembly (18) on magnet assembly (22) and interlock assembly (26). Secure with three flat
washers (17), lockwashers (16), and allen-head screws (15).
Install two movable contacts (14) and two movable hold-on irons (13). Secure with two lockwashers (12) and
allen-head screws (11).
Install two return springs (10) between armature and operator assembly (28) and interlock assembly (26).
Install two plastic covers (.9).
Install two transfer bars (8) on top terminal assembly (18). Secure with eight flat washers (7), lockwashers (6),
and screws (5).
Install magnetic reverser switch (4) and secure with two flat washers (3), lockwashers (2), and socket-head
Install electrical wires in accordance with wiring diagram.
Connect a variable dc voltage supply to magnet coil (42). Use a multimeter and measure voltage. Check that
pickup voltage is 48 V dc maximum and dropout voltage is 5 to 28 V dc.
Energize and deenergize relay and check that there is no hesitation during pickup or dropout.
Check that that battery switch is in OPEN position. Manually operate interlock contacts. Use a multimeter and
check resistance of contacts for infinity while open and continuity while closed.