JUNCTION
BOX
TM 9-4940-568-20
2-189
Table 2-21. Crane Troubleshooting (CONT).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Test 6.
Loosen four screws and clips and open crane junction box cover. Turn MAIN
POWER switch to ON position. Check for 24 volts between terminal strip, position
9, and known good ground with swing controller held in the CCW position. Turn
MAIN POWER switch to OFF position.
If 24 volts are not present, repair red wire between remote control hook-up
connector on crane sub-frame and junction box terminal strip. Refer to
paragraph 3-16 in this manual.
If 24 volts are present, go to Test 7.
