Type B Vital Relays - Alstom

Corrective Maintenance
Table 6–10. Relay Structure Inspection Procedure (Cont.)
Step
Procedure
8 Verify that each pusher does not rub against the contact springs or stop in any
position. Adjust, if necessary.
9 Verify that the armature does not bind, and rides properly on the armature
bearing plate. Clearance between the front face of the armature and the edge of
the armature retaining plate is .002 inches minimum and .004 inches maximum,
for any position of the armature. Adjust, if necessary.
10 Verify that the compression spring does not rub on stud in any position of the
armature. Adjust, if necessary.
11 Verify that the compression spring fits properly against shoulder on lock nut.
Adjust, if necessary.
12 Verify that the lock nut is properly in place on coil spring stud. Reseat and
tighten, if necessary.
P1457, Rev. Nov/07 6–16 Alstom Signaling Inc.