4-74. EMERGENCY VALVE OPERATOR MAINTENANCE (Con?).
c. ADJUSTMENT OF CABLES
Adjustment in cable lengths may be made at emergency valve operator
(1) or at other end of cable (emergency valve, vapor vent, or emergency
valve remote trip-release).
If adjusting emergency valve remote trip-release cables (2), perform
steps 4 and 5.
At cabinet (15), push emergency valve control lever (14) and vapor vent control lever (9) to
Pull on each control lever (9 and 14) in turn. There should be -1 in. (1.3-2.5 cm) of free
travel before cables (7) tighten.
If too much free travel is noted, loosen nut (8) and shorten cable (7). If not enough free travel
is noted, lengthen cable.
Pull emergency valve control lever (14) and vapor vent control lever (9) to open.
Loosen four nuts (4) at U-bolts (3). Pull on cables (2) and take up all slack. Tighten nuts.
Lubricate cables (2 and 7) at grease fittings, as required (see Chapter 3, Section I).