Remove the voltage regulator upper contact support (4, middle unit) by removing the screws (17), removing
the screws (17), lockwashers (19), insulating washer (3), two insulators (22), upper contact support, and the
other insulating washer (3). The connector (20) comes off with the upper contact support. To remove either
the current regulator or voltage regulator armature, take off the spring (10). Drill out the two rivets that
mount the armature spring hinge to the regulator frame. Support the frame to avoid bending it, center
punch the rivet head, and use a 3/32-inch drill. Remove an armature only if it is damaged, bent, or if the
contact is burned, or worn away.
d. Cleaning and Inspection. Inspect all the parts. Clean dirty, burned, or oxidized contact points. If contacts are
badly pitted they should be replaced. Use a riffer or spoon file to clean out any pits that may have formed on the flat
contact. The insulators, screws, washers, and leads must be in good condition.. If the coil windings, stationary relay
contact point, or insulators, are burned or otherwise defective, replace the complete regulator. The regulator is of riveted
construction, and only the parts shown detached in figure 81 are serviceable items.
e. Reassembly (fig. 81). If the current regulator or voltage regulator armature has been removed, install a
replacement armature with the screws, lockwashers, and nuts, furnished with the replacement armature. Assemble the
screws down so they do not ground against the cover. Install the voltage regulator contact support (4, middle unit). An
insulating washer (3) goes next to the regulator frame, then the contact support, two small insulators (22), the connector
(20), insulating washer (3), lockwasher (19), and screws (17). Note that this connects the connector to the contact
support. Install the current regulator contact support (4, end unit). An insulating washer (3) goes next to the regulator
frame, then the contact support, two small insulators (22), insulating washer (3), connector (20), insulating washer (3),
lockwasher (19), and screws (17). This fastens the connector (20). The connector is insulated from the current regulator
contact support. Resolder the lead to the upper contact support. Install the relay armature (6) with the screws (9) and
lockwashers (8). Resolder the lead to the relay armature. Install the two springs (10).
f. Test and Adjustment.
(1) Cutout Relay. Connect the regulator to the batteries and generator. Connect a voltmeter from the
in figure 82. Increase the generator speed until the cutout relay contacts close. The contacts should close
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