AC compressor replacing

— Following manufacturer's instructions, connect an approved refrigerant recovery/recycling/recharging unit to A/C system and remove refrigerant.

— Disconnect negative (-) battery cable.

^ Disconnect compressor clutch electrical connection (A).

— Disconnect A/C refrigerant lines (B) and plug openings.

^ Loosen compressor mounting plate bolts and nut (arrows); do not remove fasteners. Loosen V-belt adjuster lock nut and screw (A). Slide compressor to left and remove V-belt.

— Remove compressor mounting bolts (B) and remove compressor from adjusting plate.

— Installation is reverse of removal.

• Be sure there is sufficient oil in compressor. See Table a.

• Before recharging, evacuate system for at least 30 minutes.

• Recharge system following equipment manufacturer's instructions.

Anew A/C compressor from an authorized Porsche parts department is shipped pressurized with refrigerant. Use care when removing sealing caps and follow all manufacturer's instructions.

Always replace O-rings when reconnecting refrigerant lines.

Table a. A/C System Capacities


Oil capacity

Refrigerant (R-12): Total system capacity

1350 gr. (47 oz.)

A/C lubricating oil: Compressor Evaporator Condensers Receiver/dryer

50 gr. (2.0 oz) 40 gr. (1.6 oz.) 20 gr. (0.8 oz.) 10 gr. (0.4 oz.)

Tightening Torques

• A/C compressor adjusting plate to mount 22 Nm (17ft-lb)

• A/C compressor to adjusting plate 22 Nm (17 ft-lb)

• Refrigerant lines to A/C compressor

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