Receiver Dryer: Service and Repair

A/C RECEIVER/DRIER, REPLACING

The A/C receiver/drier is mounted in the front right corner of the engine compartment behind the headlight assembly.

NOTE: There have been two types of receiver/driers installed on E34 cars. Up to 1/89, three separate switches were used to monitor the receiver/drier. On 2/1989 and later cars, one switch with three functions was used.

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

WARNING: Do not discharge/charge the A/C system without proper equipment and training, damage to the vehicle and personal injury may result. Read warnings and cautions given under A/C system, warnings and cautions.

2. Disconnect negative (-) battery terminal.

3. Remove protective cover from rear of right headlight assembly.

4. Disconnect harness connectors from windshield washer container and remove container from mount.




5. Disconnect switch electrical harness connector(s) (white arrows) and remove mounting bolts (black arrows) from receiver/drier.

6. Remove refrigerant pressure lines from receiver/drier.

7. Remove receiver/drier complete with safety switch(es).

8. Installation is reverse of removal. Replace O-rings at pressure fittings.

CAUTION: Do not re-use O-rings when reconnecting refrigerant lines. Always replace O-rings.

9. Before recharging, evacuate system for at least 30 min. Recharge system following the equipment manufacturer's instructions.