TM 9-4940-568-20
2-174
Table 2-21. Crane Troubleshooting (CONT).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
8. BOOM DOES NOT TELESCOPE OUT WITH REMOTE CONTROL (CONT).
Test 9.
Check for continuity between terminal strip, position 11, and telescope OUT
solenoid connector, terminal 1.
If no continuity is found, repair white wire between junction box terminal strip,
position 11, and telescope OUT solenoid. Refer to paragraph 3-16 in this manual.
If continuity is found, go to Test 10.
Test 10.
Check for continuity between telescope OUT solenoid connector, terminal 2, and
known good ground.
If no continuity is found, repair telescope OUT solenoid ground circuit. Refer to
paragraph 3-16 in this manual.
If continuity is found, go to Test 11.
Test 11.
Perform a resistance check of solenoid coil. Resistance should be 23.7 to 26.3
ohms from terminal 1 and terminal 2.
If coil reistance is not within specifications, Notify Supervisor.
END OF TEST
