Mazda RX-8 Workshop Manual page 2554

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2011 - RX-8 - HVAC
NO.8 NOISE WHILE OPERATING A/C SYSTEM [MANUAL AIR CONDITIONER]
8 Noise while operating A/C system.
DESCRIPTION
POSSIBLE CAUSE
Diagnostic procedure
STEP
1 INSPECT A/C COMPRESSOR
SLIPPAGE NOISE
Is there a squeaking
or whirling sound (A/C
compressor slippage
noise)?
2 INSPECT A/C COMPRESSOR
INTERFERENCE NOISE
Is there a rattling or
vibrating sound
(interference noise)?
3 INSPECT MAGNETIC CLUTCH
OPERATION NOISE
Is larger than other
this type vehicle
clicking sound
(magnetic clutch
Noise from magnetic clutch, A/C compressor, hose or refrigerant line.
Magnetic clutch operation noise (Step 3)
A/C compressor slippage noise (Steps 4—6)
Hose or refrigerant line interference noise (Step 7)
INSPECTION
YesGo to Step 4.
No Go to next step.
YesGo to Step 7.
No Go to next step.
YesAdjust clearance between pressure plate of magnetic
clutch and A/C compressor pulley, then go to Step 8.
No Condition is normal. (Recheck malfunction symptoms.)
ACTION