Contents: Removal ↡ Installation ↡
Removal
1. Remove the refrigerant from the air conditioning system.
2. Remove the radiator grille and air intake.
3. Disconnect the wiring connector B21.1 and B21.2 from the pressure sensor (see Figure 10.13a, b).
(Article was borrowed from the website: mercedesman.ru)
Figure 10.13a. Pressure sensor in the air conditioning system (engines 111 and 601):
B21. Pressure sensor,
B21.1, B21.2. Pressure sensor wiring connector,
B77. High/low pressure sensor in the system,
B77.1. High/low pressure sensor wiring connector in the system.
Figure 10.13 b. Pressure sensor in the air conditioning system (engine 104.900):
B21. Pressure sensor,
B21.1, B21.2. Pressure sensor wiring connector,
B77. High/low pressure sensor in the system,
B77.1. High/low pressure sensor wiring connector in the system.
4. Unscrew the pressure sensor B21.
5. Disconnect the B77.1 wiring connector from the high/low pressure sensor in the system.
6. Unscrew the high/low pressure sensor in the B77 system.
Installation
7. Installation is carried out in the reverse order of removal.