P20.20-A051-08
1 | Radiator unit | 5 | Bracket | |
2 | Bolts | 6 | Vent line | |
3 | Air duct segment | 7 | Expansion rivet | |
4 | Temperature sensor |
1 | Radiator unit |
8 | Cross strut |
9 | Mounting consoles |
P20.20-A054-05
1 | Radiator unit |
10 | Electrical connector |
11 | Bracket |
P20.20-A053-05
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. | |
Warning | Risk of injury to skin and eyes suffering scalding from contact with hot coolantspray. Risk of poisoning from swallowing coolant. | Do not open cooling system unless coolant temperature is below 90 °C. Open cap slowly and release the pressure. Do not pour coolant into beverage containers. | |
Caution | Risk of injury caused by scraping or cutting body parts on sharp vehicle parts | Always wear protective gloves when working on or near sharp and non-deburred vehicle parts. | |
Topical note | Protect air conditioning circuit and components from moisture when carrying out repair work | ||
Topical note | Information on preventing damage to electronic components due to electrostatic discharge | ||
Topical note | Notes on self-locking nuts and bolts | ||
Topical note | Notes on avoiding damage through contamination and foreign objects | ||
Notes on handling refrigerant R1234yf | |||
Notes on handling refrigerant R134a | |||
| Remove/install | ||
1 | Remove the engine compartment lining at the front and in the center. | ||
2 | Remove front bumper. | ||
3 | Release and disconnect the electrical connector (10) and remove the electrical line from the holder (11). | Engine 264 in model 167 | |
4 | Unscrew the screws for the holder (11) and remove the holder (11). | Engine 264 in model 167 | |
Screw, bracket to mounting support of radiator unit at front bottom | |||
5 | Remove the radiator shutters. | Engine 264 in model 167 | |
6 | Remove screws (2). | ||
7 | Remove expansion rivets (7). | Dismantling tool | |
8 | Remove the temperature sensor (4) from the air duct segment (3). | ||
9 | Remove air duct segment (3). | ||
10 | Discharge air conditioning system. | ||
11 | Remove fan unit. | ||
12 | Remove the holders (5). | ||
13 | Drain off coolant. | ||
14 | Remove the coolant hoses from the radiator unit (1). | ||
15 | Remove the bleed line (6) from the radiator unit (1). | ||
16 | Remove the refrigerant lines from the condenser and place to one side; seal the openings with suitable stop plugs. | ||
| Compressor oils (specification 362.1) | ||
Installation: Replace sealing ring. | |||
Nut, refrigerant line to condenser | |||
Record plug | |||
17 | Release and disconnect the electrical connector of refrigerant pressure sensor(B12/2) and unclip the line from radiator unit(1). | ||
18 | Remove cross strut (8). | Nut/screw, lower crossmember to radiator unit mounting support | |
19 | Secure radiator unit (1) against falling down. | ||
20 | Remove mounting supports (9). | Screw, radiator unit mounting support to front crossmember | |
21 | Unclip side air duct segments from radiator unit(1). | ||
22 | Release the radiator unit (1) and remove downward. | Aid of helper required. | |
The radiator unit (1) comprises the additional cooler, cooler, condenser and cooler low-temperature circuit. | |||
| Check | ||
23 | Check the radiator unit (1) for damage. | If damage is present | |
| |||
Replace corresponding component. | |||
24 | Check lower elastomer bearings of radiator unit(1) for wear and damage. | If damage is present | |
| |||
Replace lower elastomer bearings | |||
25 | Install in the reverse order |
129 589 00 91 00
Record plug
000 589 95 63 00
Dismantling tool