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TM 5-4320-305- 10
Table 3-1. Operator/Crew Troubleshooting - Continued
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
10. NOISY PUMP OPERATION
Step 1.
Check for clogged suction strainer or suction hoses.
Perform the checks and services of table 2-2, item 17, and clean away debris. Replace
severely damaged or restricted hoses.
Clean debris from suction- strainer and hose.
Step 2.
Check that engine speed is correct for the specific gravity of liquid being pumped. Refer to pump
performance data plate.
Adjust SET POINT switch until engine is running at correct speed (para 2-6.g.).
11. LOW DISCHARGE PRESSURE
Step 1.
Check that engine speed is correct for the specific gravity of liquid being pumped. Refer to pump
performance data plate.
Adjust SET POINT switch until engine is running at correct speed.
Step 2.
Check that suction and discharge gate valves are fully open.
Open gate valves.
Step 3.
Check the suction components and connections for leaks. Check suction hose connection, gate
valve, spool, strainer, gaskets, and the connection between the strainer and pump assemblies.
Check that locking lever securely holds strainer in place.
a.
Tighten hose connection.
b.
Tighten strainer locking lever.
c.
If any other leaks are found, notify organizational maintenance.
12. TRAILER HAND BRAKES FAIL TO HOLD WHEELS SECURELY
Notify organizational maintenance.
3-10
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