TM 5-4310-371-14
TABLE 5-1. DIRECT AND GENERAL SUPPORT TROUBLESHOOTING (Cont'd)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
WARNING
Release pressure from air receiver and compressor pump before
inspection, performing procedures or disassembly of equipment to
avoid personal injury.
Step 1.
Check to see if valve(s) is leaking.
If valve(s) is leaking, remove and replace.
Step 2.
Check to see if piston rings are worn or defective.
If piston rings are worn or defective, remove and replace.
7. COMPRESSOR PUMP KNOCKING
WARNING
Disconnect compressor unit from main power supply before performing check(s)
or inspection, to avoid personal injury.
WARNING
Disconnect compressor unit from main power supply before servicing, replacing
or repairing parts of equipment, to avoid personal injury.
Step 1.
Check for worn connecting rod bearings.
If connecting rod bearings are worn, remove and replace
connecting rod assembly.
Step 2.
Check for worn piston pin bearing.
If piston pin bea ring is worn, remove and replace connecting rod assembly.
Step 3.
Check for worn main bearings.
If main bearings are worn, remove and replace main
bearing assemblies.
Step 4.
Check to see if piston(s) is loose.
5-5
