Type B Vital Relays - Alstom

Corrective Maintenance
6.4.2. Terminal Wiring
To wire a solder terminal, follow the procedure in Table 6–5.
Follow the procedure in Table 6–6 to wire a crimped terminal.
Table 6–5. Terminal Soldering Procedure
Step
Procedure
1 Ring out the circuit for the right wire. Tag the wire.
2 Strip wire insulation to expose 1/4 inch of bare wire. For wire sizes with outside
diameters between 0.230 - .260 inches, strip off approximately 7/8 inch of the
insulation and slide on rubber sleeve, P/N 35189-033-00, as shown:
ROSIN
CORE
SOLDER
INSULATION
CLAMP
WIRE
CLAMP
SLEEVE
3 Clamp insulated portion of wire in one lug of terminal 55871-019-00.
4 Clamp bare wire in the other lug.
WARNING
MAKE SURE THAT ALL STRANDS OF THE WIRE ARE
CLAMPED UNDER THE LUG. LOOSE STRANDS EXTENDING
THROUGH THE INSULATOR’S SPRING BEAM SLOT COULD
CAUSE A SHORT CIRCUIT TO THE TERMINAL ON THE
OPPOSITE SIDE OF THE INSULATOR.
5 Heat the terminal at the bare wire until a small amount of solder flows to bond
end of bare wire to terminal. Be aware that too much solder will jam lock tab.
6 Proceed the same way to attach a second wire to the same terminal (if
required).
7 Inspect terminal to ensure no loose strands of wire are outside terminal lugs.
P1457, Rev. Nov/07 6–8 Alstom Signaling Inc.