Jeep J-10 Series 1982 Technical & Service Manual page 1026

3E-14 AIR CONDITIONING
Performance Diagnosis—All Models
Condition
Possible Cause
Correction
COMPRESSOR NOISE
(1)
Broken valves. (1) Replace valve plate.
(2) Overcharged.
(2) Discharge, evacuate, and install
correct charge.
(3)
Incorrect oil level.
(3) Isolate compressor and check oil
level. Correct as necessary.
(4) Piston dap.
(4) Replace compressor.
(5) Broken ringB.
(5) Replace compressor.
EXCESSIVE
VIBRATION
(1)
Incorrect belt tension.
(1)
Set belt tension. Refer to
Compressor Belt Tension
(2)
Clutch loose. (2) Tighten clutch.
(3) Overcharged.
(3) Discharge, evacuate, and install
correct charge.
(4) Pulley misaligned.
(4) Align pulley.
CONDENSATION
DRIPPING
IN PASSENGER
COMPARTMENT
(1)
(2)
Drain hose plugged or
improperly positioned.
Insulation removed or
improperly installed.
(1)
(2)
Clean drain hose and check for
proper installation.
Replace insulation on expansion
valve and hoses.
FROZEN
EVAPORATOR COIL
(1)
Faulty thermostat.
(1) Replace thermostat.
(2) Thermostat capillary tube
improperly installed.
(2) Install capillary tube correctly.
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