Toyota 88310-52481
Compressor Assembly

The installation process of the 1NZ-FE HVAC compressor requires an oil adjustment step where compressors discharge gas through the service valve until their oil contents match each other by measuring from the removed unit. This process includes draining all remaining oil from the condenser and cooling unit. A new compressor holds standard oil measurements at 90 (+15) cc equivalent to (3.0 (+0.51) fl.oz.). ND-OIL8 compressor oil serves as the correct option although one must maintain precise oil levels to stop refrigeration breakdown. Use a bolt to temporarily secure the compressor before applying final torque to four bolts at a pressure of 25 Nm (255 kgf-cm, 18 ft-lbf) while following proper bolt-tightening sequence. Start by installing the discharge refrigerant hose of No. 1 cooler through these steps: first remove vinyl tape then coat the O-ring with ND-OIL8 and fitting surface before placing the O-ring on the discharge hose then fasten it to the compressor with bolt at 9.8 Nm torque (100 kgf-cm, 87 in-lbf). Apply the same installation guide to connect the No. 1 cooler refrigerant suction hose. You must first install the generator V belt and fan before adjusting it for inspection testing. The RH engine under hood should be installed while the cable requires torque of 5.4 Nm (55 kgf-cm, 48 in-lbf) to connect to the negative battery terminal. The process ends with charging refrigerant followed by engine heating and then performing refrigerant leak testing.

Remove the bolt and the O-ring, and seal the openings with vinyl tape.

Connect the connector, then install the No. 1 cooler refrigerant discharge hose by removing the vinyl tape, applying ND-OIL8 to a new O-ring and the fitting surface, installing the O-ring onto the discharge hose, and securing it to the compressor with a bolt at a torque of 9.8 Nm (100 kgf-cm, 87 in-lbf).

Connect the connector, then install the No. 1 cooler refrigerant discharge hose by removing the vinyl tape, applying ND-OIL8 to a new O-ring and the fitting surface, installing the O-ring onto the discharge hose, and securing it to the compressor with a bolt at a torque of 9.8 Nm (100 kgf-cm, 87 in-lbf).