Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSMAZDA1990626 L4-2184CC 2.2L SOHC F2REPAIR AND DIAGNOSISHEATING AND AIR CONDITIONINGCOMPRESSOR HVACSERVICE AND REPAIR
1990 Mazda 626 L4-2184cc 2.2L SOHC F2
Compressor HVAC: Service and Repair
1990 Mazda 626 L4-2184cc 2.2L SOHC F2SECTION Service and Repair
Removal Of Compressor
1. Run the engine at fast idle with the air conditioner ON for 10 minutes, then stop the engine.
2. Disconnect the negative battery cable.
3. Disconnect the magnetic clutch connector.
4. Discharge the refrigeration system.
5. Disconnect the suction and discharge hoses from the compressor.
6. Loosen the compressor mounting bolts.
7. Remove the compressor drive belt and then the compressor.
Installation Of Compressor
1. Mount the compressor.
Tightening torque: 31 - 46 N.m (3.2 - 4.7 m-kg, 23 - 34 ft-lb)
2. Connect the suction and discharge hoses to the compressor.
Tightening torque:
Discharge hose: 20 - 25 N.m (2.0 - 2.5 m-kg, 14 - 18 ft-lb)
Suction hose: 29 - 34 N.m (3.0 - 3.5 m-kg, 22 - 25 ft-lb)
3. Install the drive belt and check the drive belt deflection by applying moderate pressure 98 N (10 kg, 2.2 lb) midway between the pulleys.
Drive belt deflection:
New: 7 - 9 mm (0.27 - 0.35 in)
Used: 8 - 10 mm (0.31 - 0.39 in)
Tightening torque of lock bolt:
(A): 37 - 52 N.m (3.8 - 5.3 m-kg, 27 - 38 ft-lb)
(B): 37 - 52 N.m (3.8 - 5.3 m-kg, 27 - 38 ft-lb)
4. Check the drive belt tension at allowed part using a tension gauge.
Standard belt tension:
New : 687 - 883 N (70 - 90 kg, 154 - 198 lb)
Used: 589 - 785 N (60 - 80 kg, 132 - 176 lb)
5. Connect the magnetic clutch connector.
6. Connect the negative battery cable.
7. Evacuate, charge and test the refrigeration system.
1. Run the engine at fast idle with the air conditioner ON for 10 minutes, then stop the engine.
2. Disconnect the negative battery cable.
3. Disconnect the magnetic clutch connector.
4. Discharge the refrigeration system.
5. Disconnect the suction and discharge hoses from the compressor.
6. Loosen the compressor mounting bolts.
7. Remove the compressor drive belt and then the compressor.
Installation Of Compressor
1. Mount the compressor.
Tightening torque: 31 - 46 N.m (3.2 - 4.7 m-kg, 23 - 34 ft-lb)
2. Connect the suction and discharge hoses to the compressor.
Tightening torque:
Discharge hose: 20 - 25 N.m (2.0 - 2.5 m-kg, 14 - 18 ft-lb)
Suction hose: 29 - 34 N.m (3.0 - 3.5 m-kg, 22 - 25 ft-lb)
3. Install the drive belt and check the drive belt deflection by applying moderate pressure 98 N (10 kg, 2.2 lb) midway between the pulleys.
Drive belt deflection:
New: 7 - 9 mm (0.27 - 0.35 in)
Used: 8 - 10 mm (0.31 - 0.39 in)
Tightening torque of lock bolt:
(A): 37 - 52 N.m (3.8 - 5.3 m-kg, 27 - 38 ft-lb)
(B): 37 - 52 N.m (3.8 - 5.3 m-kg, 27 - 38 ft-lb)
4. Check the drive belt tension at allowed part using a tension gauge.
Standard belt tension:
New : 687 - 883 N (70 - 90 kg, 154 - 198 lb)
Used: 589 - 785 N (60 - 80 kg, 132 - 176 lb)
5. Connect the magnetic clutch connector.
6. Connect the negative battery cable.
7. Evacuate, charge and test the refrigeration system.
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.