TM 5-5420-280-10
0038 00
Pallet Electrical Troubleshooting (Contd)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
32. RCU WILL NOT RAISE FAR-SHORE END OF BRIDGE WITH LAUNCH BOOM (R6-A)
Step 1. Check that KY1, KY17, KY20, and KY23 hydraulic control valve
solenoid LED lights are lit when action button 2 is depressed.
If all lights are lit on control valve solenoids, notify field
maintenance.
Step 2. Check to see if one or more lights are out when action button 2 is
depressed.
If light is out, notify field maintenance.
END OF TESTING
33. RCU WILL NOT RETRIEVE BRIDGE FROM GAP (R7-H)
Step 1. Check that KY1, KY7, and KY22 hydraulic control valve solenoid
LED lights are lit when action button 2 is depressed.
a. If all lights are lit on control valve solenoids, check limit switches
KA3 and KA4 to see if damaged or out of adjustment. If damaged
or out of adjustment, notify field maintenance.
b. If limit switches KA3 and KA4 are operating and control valve
solenoid lights are lit, notify field maintenance.
Step 2. Check to see if one or more control valve solenoid LED lights are out
when action button 2 is depressed.
If light is out, notify field maintenance.
END OF TESTING
34.
RCU WILL NOT RETRIEVE BRIDGE TO PALLET (R10-H)
Step 1. Check that KY1, KY3, KY7, and KY21 hydraulic control valve
solenoid LED lights are lit when action button 2 is depressed.
a. If all lights are lit on control valve solenoids, check limit switch
KA8 low and KA8 high to see if damaged or out of adjustment. If
damaged or out of adjustment, notify field maintenance.
b. If limit switch KA8 low and KA8 high is operating and control
valve solenoid LED light is lit, notify field maintenance.
Step 2. Check to see if one or more lights are out when action button 2 is
depressed.
If light is out, notify field maintenance.
END OF TESTING
