RC.600.326 12V Truck AC Compressor DCP99520 RE284680 4472802000 For 10SRE18C MAQUINA For RETROESCAVADEIRA WXTK074

RC.600.326 12V Truck AC Compressor DCP99520 RE284680 4472802000 For 10SRE18C MAQUINA For RETROESCAVADEIRA WXTK074

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How to Replace a Car A/C Compressor

1. Signs You Need Replacement

• Weak/no cooling despite proper refrigerant levels.
• Unusual noises (grinding, squealing) from the compressor clutch.
• Leaking refrigerant (oil stains around the compressor).
• Seized pulley or clutch failure (belt won’t turn).

2. Tools & Materials Needed

• New compressor (OEM or compatible aftermarket).
• Refrigerant recovery machine (mandatory for environmental safety).
• A/C manifold gauge set.
• Wrenches, sockets, and belt tension tools.
• PAG oil (type specified for your system).
• New receiver/drier or accumulator (recommended).
• Safety gear (gloves, goggles).

3. Replacement Steps

① Recover Refrigerant

• Use a recovery machine to safely remove refrigerant (illegal to vent into the atmosphere).

② Remove Components

• Disconnect the battery.
• Loosen the serpentine belt (remove tensioner or belt).
• Unbolt the compressor, disconnect electrical/clutch wiring.
• Detach refrigerant lines (cap openings immediately to prevent moisture entry).

③ Install New Compressor

• Drain and measure oil from the old compressor; add fresh PAG oil to the new unit (exact amount per manufacturer specs).
• Mount the new compressor, reconnect lines/wiring.
• Replace the receiver/drier or accumulator (critical for moisture control).

④ Evacuate & Recharge

• Vacuum the system for 30+ minutes to remove air/moisture.
• Recharge with the correct refrigerant type and quantity (check vehicle label).

⑤ Test the System

• Start the engine, engage A/C, and check for:
• Cold airflow at vents.
• No abnormal noises.
• Proper clutch engagement.

4. Key Notes

• Never open the system without refrigerant recovery (hazardous and illegal).
• Incorrect oil or refrigerant amounts can damage the compressor.
• If unsure, consult a professional—A/C systems require precision.