TM 5-628/AFR 91-44
e. Switch stand lever latches and point locks.
b. Switch point gap.
Switch stand lever latches or switch point locks
(1) If the switch can be thrown and locked
in either direction with a c (0.125) inch spacer be-
shall be installed on all switches. Where latches or
locks are missing, damaged, insecure, or otherwise
tween the switch point and the stock rail, oper-
inoperative, operations through the turnout shall
ations through the turnout shall not exceed 10 mph.
not exceed 10 mph.
(2) If the switch can be thrown and locked
f. Switch stand. The switch stand shall be fully
in either direction with a (0.25) inch spacer be-
secured to the headblock ties to prevent any unin-
tween the switch point and the stock rail, oper-
tentional movement of the switch points. Where
ations through that side of the turnout shall not be
operations through the switch result in visible lat-
permitted.
eral movement of the switch stand or opening of
c. Switch points. A switch point shall be re-
the switch points (point gap), operations through
stored or replaced if the point is chipped, broken,
the turnout shall not be permitted.
or worn more than (0.50) inch down and 6
g. Connecting rod, switch rods, and switch
inches back from the point. (See fig 8-3). Metal
clips.
flow shall be removed to ensure proper closure. If
(1) These parts shall be installed and main-
a switch point is worn or damaged beyond these
tained to allow unobstructed motion when the
limits, operations through the turnout shall not
switch is thrown. Rod ends and clips shall not con-
exceed 10 mph.
tact adjacent ties. Damaged parts shall be replaced,
d. Figure 8-4 shows the proper elevation of the
and improperly installed parts shall be adjusted.
switch point and point rail with respect to the stock
Washers or similar spacers shall not be permitted
rail.
between the switch clip and the switch point.
(1) If the top surface of the switch point is
(2) If the connecting rod, switch rod, or
higher than the top of the stock rail, operations
switch clip is insecurely fastened or is damaged,
operations through the turnout shall not be
through the turnout shall not exceed 5 mph.
permitted.
(2) If the point rail beyond the taper is
(3) The jam nut at the switch stand end of
lower than the stock rail, operations through the
the connecting rod shall be kept tight against the
turnout shall not be permitted.
switch stand clevis.
8-3
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