Chrysler DODGE D150 1993 Service Manual page 1452

HEATING AND AIR CONDITIONING 24 -
A/C COMPRESSOR AND CLUTCH DIAGNOSIS
A/C COMPRESSOR NOISY
?
COMPRESSOR OFF
COMPRESSOR ON
I
CLUTCH PULLEY
RUBBING
EVALUATE INSIDE
VEHICLE MODE-
MAX A/C
BLOWER-LOW
OUTLETS-OPEN
WINDOWS-
CLOSED
EVALUATE INSIDE
VEHICLE MODE-
MAX A/C
BLOWER-LOW
OUTLETS-OPEN
WINDOWS-
CLOSED
CLUTCH BEARING
NOISY
MOUNTING
BOLTS LOOSE
TIGHTEN
•
REMOVE BELTS
RECHECK RUBBING
AND BEARING
NOISE
LOOSE
BELTS
ADJUST
*
»
CHECK AIR GAP
RESET IF NOT
0.406 - 0.787 m m
(0.016-0.031 In)
BELT
INTERFERENCE
•
I
BENT PULLEY
REPLACE PULLEY
AND
ARMATURE
KNOCKING OR
GRINDING NOISE
FROM
COMPRESSOR
_
*
DEFECTIVE COIL
IF SO
REPLACE
REPLACE
COMPRESSOR
\
FRONT ALIGNMENT
PIN LOOSE OR
OUT OF
SPECIFICATION
REPLACE
COMPRESSOR
FRONT
COVER
COMPRESSOR WONT TURN
PROPERLY CLUTCH ENGAGES
BUT SLIPS OR SMOKES
CLUTCH SLIPPING
LOW VOLTAGE
AT CLUTCH
CHECK WIRING,
SWITCHES, CLUTCH
AMPERAGE AND
GROUND
I
AMPERAGE
GREATER THAN
5 AMPS
CLUTCH COIL
PARTIALLY
SHORTED
REPLACE
COIL
OIL/GREASE ON
FRICTION SURFACES
CHECK SHAFT
SEAL FELT
COIL SNAP
RING NOT
PROPERLY
INSTALLED
IF BEARING
DEFECTIVE
REPLACE
PULLEY AND
ARMATURE
NOTE: APPLY PARKING BRAKE AND RUN
ENGINE IN NEUTRAL ONLY.
* CLUTCH OR BELT SUPPING CAN BE
CAUSED BY OVERCHARGED
SYSTEM OR CONDENSER FAN NOT
RUNNING.
OIL SATURATED
FELT REPLACE
COMPRESSOR
SHAFT SEAL
ADJUST BELT
TENSION
REPLACE IF
NECESSARY
CLUTCH
PULLEY RUBS
ON COIL
COIL
MISMOUNTED
SEIZED
COMPRESSOR
T
REPLACE
COMPRESSOR
AND CLUTCH
ASSEMBLY
GREASE PURGED
FROM BEARING
REPLACE CLUTCH
PULLEY AND
ARMATURE
GREASE PURGED
FROM BEARING
REPLACE CLUTCH
PULLEY AND
ARMATURE
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