S83.55-A000-78
Shown with engine 780.701 |
1 | Expansion valve | 5 | Refrigerant line | |
2 | Electrical connector | 6 | Nut | |
3 | Electrical connector | 7 | Refrigerant line | |
4 | Nut |
1 | Expansion valve |
8 | Bolts |
9 | Sealing rings |
10 | Pressure and temperature sensor |
S83.55-A001-73
Danger | Risk of death when working on component parts and systems with U >= 30 V alternating voltage (AC) or U >= 60 V direct voltage (DC) | Do not touch damaged or defective live component parts and lines or non-insulated electrical connections and lines. | |
Danger | Risk of fire due to ignition of R1234yf refrigerant on hot components. Risk of poisoning caused by inhaling overheated refrigerant vapors. Risk of injury to skin and eyes caused by contact with escaped R1234yf refrigerant and when working on pressurized parts. Risk of explosion due to formation of ignitable refrigerant/air mixtures | Never perform welding work on or near a closed air conditioning system. No smoking or open flames. Wear safety glasses and protective gloves. Work only in well ventilated rooms. Carry out repair work on the air conditioning system circuit only after the system has been evacuated. | |
Warning | Risk of poisoning caused by inhaling overheated refrigerant vapors from an air conditioning system containing R134a. Risk of injury to skin and eyes caused by contact with liquid R134a refrigerant and when working on pressurized parts | Never perform welding work on or near a closed air conditioning system. No smoking or open flames. Wear safety glasses and protective gloves. Work only in well ventilated rooms. Carry out repair work on the air conditioning system circuit only after the system has been evacuated. | |
Topical note | Notes on avoiding damage through contamination and foreign objects | ||
Topical note | General information on vehicles with high-voltage on-board electrical system and/or lithium-ion battery and/or gaseous-fuel drive system as well as personal protective equipment | ||
Topical note | Information on preventing damage to electronic components due to electrostatic discharge | ||
Topical note | Protect air conditioning circuit and components from moisture when carrying out repair work | ||
Notes on handling refrigerant R134a | |||
Notes on handling refrigerant R1234yf | |||
| Remove/install | ||
1 | Discharge air conditioning system. |
| |
Model 447 with engine 780.701/702 | |||
2 | Switch off ignition and store transmitter key outside of transmission range (min. 2 m). | ||
3 | Disconnect electrical connector (2) from the pressure and temperature sensor (10). | ||
4 | Disconnect electrical connector (3). | ||
5 | Remove the nut (4). | Nut, refrigerant line to expansion valve for high-voltage battery | |
6 | Remove refrigerant line (5) from expansion valve (1). | ||
| Compressor oils (specification 362.1) | ||
Plug openings. | |||
Installation: Install new sealing ring and coat with compressor oil. | |||
Assembly tool | |||
Record plug | |||
7 | Remove nut (6). | Nut, refrigerant line to expansion valve for high-voltage battery | |
8 | Remove refrigerant line (7) from expansion valve (1). | ||
| Compressor oils (specification 362.1) | ||
Plug openings. | |||
Installation: Install new sealing ring and coat with compressor oil. | |||
Assembly tool | |||
Record plug | |||
9 | Remove screws (8). | Bolt, expansion valve for high-voltage battery to heat exchanger high-voltage battery | |
10 | Remove expansion valve (1). | ||
| Compressor oils (specification 362.1) | ||
Plug openings. | |||
Installation: Install new sealing rings (9) and coat with compressor oil. | |||
Assembly tool | |||
Record plug | |||
11 | Install in the reverse order. |
000 589 93 63 00
Assembly tool
129 589 00 91 00
Record plug
Referenced documents
- ah0000p500001a Notes on avoiding damage through contamination and foreign objects
- ah0000z030001a General information on vehicles with high-voltage on-board electrical system and/or lithium-ion battery and/or gaseous-fuel drive system as well as personal protective equipment
- ah5400p000101a Information on preventing damage to electronic components due to electrostatic discharge
- ah8330n000301a Notes on handling refrigerant R134a
- ah8330n000501a Protect air conditioning circuit and components from moisture when carrying out repair work
- ah8330p000302a Notes on handling refrigerant R1234yf
- ar8330s1760e Drain, evacuate and recharge air conditioning, check for proper operation and check for leaks
- ar8330s1760ef Drain, evacuate and recharge air conditioning, check for proper operation and check for leaks
- as0000z003501a Risk of death when working on component parts and systems with U >= 30 V alternating voltage (AC) or U >= 60 V direct voltage (DC)
- as8300z000601a Risk of poisoning caused by inhaling overheated refrigerant vapors from an air conditioning system containing R134a. Risk of injury to skin and eyes caused by contact with liquid R134a refrigerant and when working on pressurized parts
- as8300z000701a Risk of fire due to ignition of R1234yf refrigerant on hot components. Risk of poisoning caused by inhaling overheated refrigerant vapors. Risk of injury to skin and eyes caused by contact with escaped R1234yf refrigerant and when
- bb0040p036201a Compressor oils (specification 362.1)