A/C - Inoperative
Category Applicable Model/s Subject Bulletin No. 009/8516 1979-1985 RX-7 AIR CONDITIONER INOPERATIVE Issued 9/20/85
Revised
Receiver/Drier:
DESCRIPTION
If the air conditioner is inoperative and the fusible plug on the receiver/drier is blown, replace the receiver/drier, then evacuate the system and recharge with the proper amount of refrigerant according to the Mazda Air Conditioner Technical & Troubleshooting Manual.
To determine the cause of the blown fusible plug, proceed as shown below.
Compressor Drive Belt:
TROUBLESHOOTING PROCEDURE
1. Check the tension of the compressor drive belt. Adjust if necessary..
Specification: 5/16" to 3/8" (8-10 mm) deflection when center span of belt is pushed with a force of 22 lbs (10 kg).
Condensor:
2. Check that the fins on the condensor are not clogged or restricted. Clean, if necessary.
Pressure Gauges:
3. Attach a manifold to the suction and discharge fittings. Refer to the Mazda Air Conditioning Technical & Troubleshooting Manual. If the high pressure gauge shows an excessively high pressure, go to Step 4.
Fan Drive Clutch:
4. Check the fan drive clutch and replace, if necessary.
^ When the engine is cold, turn the cooling fan by hand and check that resistance is felt.
^ Check to be sure that there is no fluid leakage from the fan drive clutch.
^ Check to be sure that there is no deformation of the bi-metal.
^ Check that there is no bearing play or grease leakage.
For 1984-85 RX-7:
Refer to the applicable Workshop Manual, Section 3, "Cooling System".