Table 2-21. Crane Troubleshooting (CONT).
TEST OR INSPECTION
1. CRANE INOPERATIVE (CONT).
Check for 24 volts between shutdown relay (black wire) socket, located in the
junction box and a known good ground.
If 24 volts are present, go to Test 13.
If 24 volts are not present, repair black wire from terminal strip, position 17, to
shutdown relay. Refer to paragraph 3-16 in this manual.
Check for continuity between pins 30 and 87a of shutdown relay.
If no continuity is found, replace shutdown relay. Refer to paragraph 5-4 in this
If continuity is found, repair white wire from shutdown relay to terminal strip,
position 5. Refer to paragraph 3-16 in this manual. Loosen screw and remove
connector from manual override valve, check for 24 volts between terminal 1 and
known good ground, if no voltage at terminal and ground repair or replace override
valve cable assembly. Refer to paragraph 3-16 in this manual.
END OF TEST