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5-3
TM5-4120-375-14
Table 5-1.
DIRECT SUPPORT MAINTENANCE TROUBLESHOOTING
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MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
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1.
INSUFFICIENT COOLING.
Step 1.
Check
check
sight glass for bubbles.If bubbles exist. leak
system in accordance with paragraph 5-16.
Repair or replace sight glass in accordance
with paragraph 5-33.
Step 2.
Feel dehydrator (filter-drier) to see whether it is
cold to the touch or is frosted or sweating.
Cold discharge indicates obstruction.
Replace dehydrator (filter-drier) In
accordance with paragraph 5-28.
Step 3.
Check solenoid valve for proper operation.
Test solenoid valve in accordance with
paragraph 5-34.
Step 4.
Check thermostat expansion valve
operation.
Test thermostat expansion
with paragraph 5-29.
for proper
valve in accordance
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