Air Conditioning
Air Conditioning
Special tools, workshop equipment and auxiliary items required
- VAG 1331 Torque wrench (or 5 - 50 Nm equivalent)
- VAS 6208 Drip tray for shop crane VAS 6100 (or equivalent)
- 3093 Hose clamps (> 40 mm)
- Refrigerant recycling/recovery unit Kent-Moore ACR4 (or UL approved equivalent - VAS 6007A illustrated for reference only).
NOTE:
- Before carrying out any work on the A/C refrigerant system, refer to all CAUTIONS and WARNINGS in A/C refrigerant system safety measures.
- Evacuate refrigerant circuit using refrigerant recycling/recovery unit Kent-Moore ACR4 (or UL approved equivalent).
- O-rings used on R-134a systems may be red, green, violet or black.
- Always plug open refrigerant line connections to prevent dirt and moisture contamination.
Pressures and temperatures, checking
Testing with pressure gauges
Evacuating and recharging
1. Expansion valve
- Engine compartment right
- Removing
2. High Pressure Sensor -G65-
3. High pressure service valve
4. Low pressure service valve
5. Refrigerant Temperature Sensor -G454-
6. Compressor
- Manufacturer: Denso
Designation 7SEU16C
- Note installation/running in procedures
- Compressor applications overview:
7. Condenser
8. Reservoir with drier cartridge
- Integrated with condenser
- Replace every time refrigerant circuit has been opened.
- Drier cartridge, replacing
Fig. 1 Low pressure service valve, removing
WARNING: Low pressure service valve must only be removed after refrigerant circuit has been discharged.
- Observe notes.
- Discharge refrigerant circuit
1. Connection with external thread and groove for O-ring
2. O-ring
- 7.6 mm; 1.8 mm
3. Service valve
4. O-ring
- 7.6 mm; 1.8 mm
- 5-Cap
Fig. 2 High pressure service valve, removing
WARNING: High pressure service valve must only be removed after refrigerant circuit has been discharged.
- Observe notes.
- Discharge refrigerant circuit
1. Connection with internal thread
2. O-ring
- 10.8 mm; 1.8 mm
3. Service valve with groove and internal thread for cap.
4. O-ring
- 10.8 mm; 1.8 mm
5. Cap