A/C - Inoperative

Category Applicable Model/s Subject Bulletin No. 009/85
16 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".