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 MANUALSMAZDA1993B2200 LE-5, 2D PICKUP, AUTOMATICREPAIR AND DIAGNOSIS (SINGLE PAGE)HEATING, VENTILATION & A/C (HVAC)GENERAL SERVICINGA/C COMPRESSOR OIL CHECKINGHARRISONR4 4-CYLINDER
1993 Mazda B2200 LE-5, 2D Pickup, Automatic
R4 4-Cylinder
1993 Mazda B2200 LE-5, 2D Pickup, AutomaticSECTION R4 4-Cylinder
- Before checking and adjusting oil level, operate engine at 800-1000 RPM. Set controls at maximum cooling and high blower motor speed for 20 minutes to return oil to compressor.
- Stop engine. Discharge refrigerant and remove compressor from vehicle. See SERVICING PRECAUTIONS. Remove oil drain plug and measure amount of oil drained.
- If amount drained is less than one ounce, conduct leak tests at system connections. Repair or replace faulty parts as necessary. Fill compressor with 2 ounces, using new refrigerant oil.
- If amount drained is more one ounce, oil level is okay. Fill compressor with same amount drained, using new oil.
- When replacing other A/C system components, add the following amount(s) of refrigerant oil. See COMPONENT REFRIGERANT OIL CAPACITIES (HARRISON R4 4-CYLINDER) table.
COMPONENT REFRIGERANT OIL CAPACITIES (HARRISON R4 4-CYLINDER)
| Component | Ounces |
|---|---|
| Condenser | 1.0 |
| Evaporator | 1.7 |
| Receiver-Drier | 1.0 |
| Refrigerant Lines | 0.3 |
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.