TM 1-1680-320-13&P
0008 00
CONTROL PENDANT CABLE UP/DOWN SWITCH
1. Disconnect connector from control pendant.
2. Position the CABLE UP/DOWN switch to DOWN and check for continuity between pins A and G of pendant
connector.
3. Position the CABLE UP/DOWN switch to UP and check for continuity between pins A and F of pendant
connector.
ACTUATOR/LIMIT SWITCH CONTINUITY CHECK
NOTE
Boomhead sheave can chaff actuator up limit switch cable, creating a ground,
causing damage to control panel circuitry.
1. Remove electrical connector J6 from control panel.
2. Using a multimeter, in ohms mode, check J6 connector, pins A and B (up-limit switch) to hoist for continuity.
a. Check continuity between pins A and B. Connect positive lead to pin A and negative lead to pin B;
actuator arm down (switch closed); there should be a positive reading; lift actuator arm (switch open);
there should be no reading between pins A and B.
b. Check for continuity between pin A and hoist. Connect positive lead to pin A and negative lead to hoist;
actuator arm down (switch closed); there should be no positive reading; lift actuator arm (switch open);
there should be no reading between pin A and hoist.
c.
Repeat step 2c for pin B.
3. When a reading is indicated during steps 2b or 2c turn-in boomhead for depot repair.
End of Work Package
0008 00-5/(0008 00-6 blank)
