OPERATOR’S TROUBLESHOOTING
IMPROVED RIBBON BRIDGE (IRB)
RAMP BAY M16
NSN 5420-01-470-5825 P/N 12478918;
INTERIOR BAY M17
NSN 5420-01-470-5824 P/N 12478919.
Section II. OPERATOR’S TROUBLESHOOTING PROCEDURES
PUMP SYSTEM TROUBLESHOOTING
NOTE
Refer to the general instructions in Introduction to
Troubleshooting, WP 0055 00, prior to performing pump
system troubleshooting.
1. PUMP SYSTEM WILL NOT RAISE BAY (RAMP BAY ONLY)
Step 1. Check to see pump control lever is set to the UP position.
Set pump control valve to UP position and raise bay (WP 0010 00).
Step 2. Check pump reservoir for low fluid level.
a. If empty or low, fill reservoir to correct level (WP 0064 00).
b. Bleed system of air, notify unit maintenance.
Step 3. Check tubes and hoses for leaks.
a. If leak is found, notify unit maintenance.
b. If no visible leaks can be found, suspect internal leak in pump,
cylinder, or control valve, and notify unit maintenance.
END OF TESTING
2. PUMP SYSTEM WILL NOT HOLD BAY IN RAISED POSITION
(RAMP BAY ONLY)
Step 1. Check position of control valve lever.
Ensure lever has been moved to the TRANSPORT/CROSSING
position and is fully engaged in slot on selector (WP 0010 00).
Step 2. Check tubes and hoses for leaks.
a. If leak is found, notify unit maintenance.
b. If no visible leak can be found, suspect internal leak in pump,
cylinder, or control valve, and notify unit maintenance.
END OF TESTING
TM 5-5420-278-10
0060 00
0060 00-1
Operator’s Pump System Troubleshooting
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
