SPECIFICATIONS
Note. For 323i and 328i 4-door models, see AUTOMATIC A/C-HEATER SYSTEMS - 323I SEDAN & 328I SEDAN article.
| Application | Specification |
|---|
| Compressor Type | Nippondenso Or Seiko-Seiki |
| System Oil Capacity | (1) 3.4-4.8 ozs. |
| Refrigerant (R-134a) Capacity | 34.4-36 ozs. |
| System Operating Pressures (2) |
| High Side | 164-215 psi (11.5-15.1 kg/cm 2 ) |
| Low Side | 36-42 psi (2.5-3.0 kg/cm 2 ) |
| (1) Use PAG Oil (Part No. 81-22-9-407-724). (2) Specification is with ambient temperature at 80°F (27°C) and relative humidity at 50-70 percent. |
| (1) | Use PAG Oil (Part No. 81-22-9-407-724). |
| (2) | Specification is with ambient temperature at 80°F (27°C) and relative humidity at 50-70 percent. |
TORQUE SPECIFICATIONS
| Application | Ft. Lbs. (N.m) |
|---|
| A/C Compressor Bolts | 16 (22) |
| A/C Compressor Clutch Spring Plate | 15 (20) |
| Pressure Safety Switch |
| High Pressure | (1) 18 (25) |
| Low Pressure | (1) 14 (19) |
| INCH Lbs. (N.m) |
| Heater Core Stud Nuts | 27 (3.0) |
| Heater-To-Body Screw | 40 (4.5) |
| Temperature Sensor Screw | 4.4 (0.5) |
| (1) Apply locking compound to threads. |
| (1) | Apply locking compound to threads. |
Automatic A/C-Heater System Wiring Diagram (1998 M3, 318i, 323i, 323is, 328i, 328i & 328is). Scheme 1
Scheme 1: Automatic A/C-Heater System Wiring Diagram (1998 M3, 318i, 323i, 323is, 328i, 328i & 328is)
Automatic A/C-Heater System Wiring Diagram (1999 M3, 323i, 323is, 328i, 328i & 328is). Scheme 2
Scheme 2: Automatic A/C-Heater System Wiring Diagram (1999 M3, 323i, 323is, 328i, 328i & 328is)
Park Ventilation Circuit - (1998 M3, 318i 323i,323is, 328i & 328is). Scheme 3
Scheme 3: Park Ventilation Circuit - (1998 M3, 318i 323i,323is, 328i & 328is)
Park Ventilation Circuit - (1999 M3, 323i, 323is, 328i, 328is). Scheme 4
Scheme 4: Park Ventilation Circuit - (1999 M3, 323i, 323is, 328i, 328is)
