DISCHARGING SYSTEM
Discharge A/C system using approved refrigerant recovery/recycling equipment. Always follow recovery/recycling equipment manufacturer's instructions. After refrigerant recovery process is completed, the amount of compressor oil removed must be measured and the same amount added to A/C system.
DISCONNECTING LINES & FITTINGS
After system is discharged, carefully clean area around all fittings to be opened. Always use 2 wrenches when tightening or loosening fittings. Some refrigerant lines are connected with a coupling. Special tools may be required to disconnect lines. Cap or plug all openings as soon as lines are removed. DO NOT remove caps until connections of lines and fittings are completed.
CONNECTING LINES & FITTINGS
Note. All R-134a based systems use 1/2"-16 ACME threaded fittings. Ensure all replacement parts match the connections of the system being worked on.
Always use a new gasket or "O" ring when connecting lines or fittings. Coat "O" ring with refrigerant oil and ensure it is not twisted during installation. Always use 2 wrenches to prevent damage to lines and fittings.
FORD (HALLA) - FS-10 10-CYLINDER
Note. Compressor refrigerant oil checking procedure is not available for Mazda B2300, B3000 and B4000 pickups.
- Slowly discharge system. See SERVICING PRECAUTIONS. Remove A/C compressor. Drain compressor oil from suction and discharge ports. Measure amount drained and discard oil.
- If amount drained from removed (old) compressor is between 3 and 5 ounces, add drained amount of new refrigerant oil into the NEW compressor.
- If amount drained is less than 3 ounces, add 3 ounces. If amount drained is more than 5 ounces, add 5 ounces. Use new "O" rings on refrigerant lines. Install A/C compressor. Evacuate and recharge system. Perform leak test.
- When replacing other A/C system components, add the following amount(s) of refrigerant oil. See COMPONENT REFRIGERANT OIL CAPACITIES (FS-10 10-CYLINDER) table.
| Component | Ounces |
|---|---|
| Condenser | 1.0 |
| Evaporator | 3.0 |
| Accumulator Or Receiver-Drier | (1) 2.0 |
| Refrigerant Lines | (2) 1.0 |
| (1) On Navajo, drain oil from old receiver-drier. Add amount drained plus amount specified. On Quest, add 2.0 ounces. (2) Add only if a large oil leak is indicated. | |
| (1) | On Navajo, drain oil from old receiver-drier. Add amount drained plus amount specified. On Quest, add 2.0 ounces. |
| (2) | Add only if a large oil leak is indicated. |
COMPONENT REFRIGERANT OIL CAPACITIES (FS-10 10-CYLINDER)
Miata & RX7
- On Miata, add 0.9 ounce of refrigerant oil when replacing condenser. Add 1.5 ounces when replacing evaporator. When replacing receiver-drier, add 0.3 ounce.
- On RX7, add 1.2 ounces of refrigerant oil when replacing condenser. Add 2.1 ounces when replacing evaporator. When replacing receiver-drier, add 0.3 ounce. When replacing hose(s), add 0.2 ounce of refrigerant oil.
MPV
Add 1.2 ounces of refrigerant oil when replacing condenser or front/rear evaporator. When replacing receiver-drier, add 0.3 ounce.
323, 626, 929, MX-3, MX-6, Protege
- On MX-3, Protege and 323, add 0.9 ounce of refrigerant oil when replacing condenser. Add 1.8 ounces when replacing evaporator. When replacing receiver-drier or hoses, add 0.3 ounce of refrigerant oil.
- On MX-6, 626 and 929, add 0.5 ounce of refrigerant oil when replacing condenser. Add 1.5 ounces (1.8 ounces on 929) when replacing evaporator. When replacing receiver-drier or hoses, add 0.3 ounce of refrigerant oil.