(14) Connect the terminal clip (14) with the brush (18) terminal and tighten the brush spacer washers (19),
lockwashers (20), and screws (21).
(15) Install and tighten the through bolts (26) and lockwashers (28).
(16) Install the cover band (24) and secure it with the cover band screw (23) and nut (25).
(17) Install the key (5) on the armature shaft. See that the key and the keyway in the grooved pulley (3) are
properly alined.
(18) Install and tighten the drive pulley lockwasher (2) and nut (1).
e. Installation. Refer to paragraph 112h.
192. Voltage Regulator
a. General. The voltage regulator is of the vibrating-current type used with shunt generators. When replacing the
voltage regulator, make sure that the new regulator is the same model as the old one. The voltage regulator consists of
three units: the cutout relay (10, fig. 112), the voltage regulator (14), and the current regulator (12)all mounted on the same
base (16) and inclosed by the same cover.
b. Contact Points. Clean the contact points (2, 4, and 6) with a spoon or riffler file. The flat contact point is on the
upper contact bracket (1, 2, and 5), and the bracket must be removed for cleaning the points. A flat file cannot be used
successfully to clean the contact points because it will not touch the center of the point, which is most apt to wear.
Caution: Do not use emery cloth or sandpaper to clean the contact points.
c. Cutout Relay.
(1) Air gap. Disconnect the battery before testing the air gap and point opening adjustment. Place your fingers
on the armature (9), directly above the core, and move the armature down until the points (6) just close.
Measure the air gap between the armature (9) and center of the core. This dimension must be 0.017 inch.
On multiple point relays, make sure that all points close at the same time. If they do not, bend the spring
fingers until they close at the same time. Loosen the two screws (11) at the back of the cutout relay (10)
and raise or lower the armature until the air gap of 0.017 inch is obtained. Tighten the screws (11) after
adjustment.
(2) Point opening. The correct point opening is 0.032 inch. Adjust the point opening by bending the upper
armature stop until the required opening is obtained.
267
