TM 5-4310-371-14
TABLE 4-1. ORGANIZATIONAL TROUBLESHOOTING (Cont'd)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Step 2.
Check setting of pressure switch.
Adjust pressure switch settings as described in paragraph 4-7, figure 4-4.
4. KNOCKING OR RATTLE DEVELOPS IN COMPRESSOR PUMP
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 loose motor pulley or flywheel.
Tighten motor pulley and flywheel.
Step 2.
Check for loose V belts.
Tighten V belts as described in Chapter 3, Section III,
Step 3.
Listen for squeaky V belts.
If V belts squeak, then they have been glazed and should
be replaced as described in Chapter 4, Section III,
Step 4.
Check for loose compressor pump mounting nuts and bolts.
Tighten any loose mountings.
Step 5.
Check oil level in compressor pump.
If oil level is low, fill to correct level as described
Step 6.
Check to make sure oil in compressor pump is correct weight.
4-5
