TM 9-4940-568-34
2-50
Table 2-7. Crane Troubleshooting (CONT).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
6. CRANE DOES NOT SWING OR SWINGS SLOWLY (Continued).
Test 2.
Install test meter on test port. Start FRS. Have assistant operate SWING control lever to
attempt to swing clockwise and counter clockwise. Check for 1,400-1,600 psi
(9,653-11,032 kPa) swing pressure in both directions.
If pressure is within specifications, go to Test 3.
If pressure is not within specifications, repair or replace the cross relief valve.
Refer to paragraph 3-32 or 6-12.
TEST
PORT
CROSS RELIEF
VALVE
BAR SENSOR
(0–1000)
TEST
METER
