JUNCTION
BOX
TM 9-4940-568-20
2-166
Table 2-21. Crane Troubleshooting (CONT).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
7. BOOM DOES NOT TELESCOPE IN WITH REMOTE CONTROL (CONT).
Test 7.
Check for continuity between terminal strip, position 12, and telescope IN solenoid
connector, terminal 2.
If no continuity is found, repair white wire between junction box terminal strip,
position 12, and telescope IN solenoid. Refer to paragraph 3-16 in this manual.
If continuity is found, go to Test 8.
Test 8.
Check for continuity between telescope IN solenoid connector, terminal 2, and
known good ground.
If no continuity is found, repair telescope IN solenoid ground circuit. Refer to
paragraph 3-16 in this manual.
If continuity is found, go to Test 9.
Test 9.
Perform a resistance check of solenoid coil. Resistance should be between 23.7
and 26.3 ohms from terminal 1 and terminal 2.
If coil resistance is not within specifications, Notify Supervisor.
END OF TEST
