1852 / 1906
HVAC
38
elsewhere Is noise heard
immediately after A/C com-
pressor is stopped?
No
Go to next step.
15
Inspect drive belt
Is it okay?
Yes
Go to next step.
No
Adjust or replace drive belt, then go to Step 19.
16
Inspect drive belt condition
Is drive belt worn?
Does it have foreign material
imbedded in it, or gave oil
on it?
Yes
Remove obstruction, remove oil, or replace drive
belt, then go to Step 19.
No
Go to next step.
17
Inspect magnetic clutch
Inspect magnetic clutch. Is it
okay?
Yes
Replace A/C compressor, go to Step 19.
No
Replace A/C compressor, then go to Step 19.
18
Verify whether malfunction
is in a/c compressor or re-
frigerant lines
Is noise emitted from A/C
compressor?
Yes
Visually inspect A/C compressor, replace appropri-
ate parts if necessary, then go to next step.
No
If noise is due to refrigerant lines, repair detached
or missing clips, tighten loose bolts, then go to next
step.
19
Verify that malfunction
symptom occurs after repair
Has A/C compressor noise
stopped?
Yes
Troubleshooting completed.
No
Explain repairs to customer. Recheck malfunction
symptoms, then repeat from Step 1 if malfunction
recurs.