P20.20-A132-08
Shown on model 253.311 |
1 | Radiator unit | 7 | Refrigerant line | 11 | Bracket | ||
1.1 | Radiator |
P20.20-A088-08
Shown on model 253.311 |
1.2 | High-voltage system radiator | 6 | Refrigerant line | 10 | Bracket | ||
4 | Coolant line | 8 | Mounting clip | 10s | Screw | ||
5 | Coolant line | 9 | Electrical connectors |
P20.20-A089-08
Shown on model 253.311 |
1.2 | High-voltage system radiator | 10 | Bracket | 12 | Coolant line | ||
4 | Coolant line | 10s | Screw |
Overview of radiator unit (1) on model 253.311/911 with code ME05 (hybrid drive 85 kW–94 kW variant (incl. plug-in)) |
1.1 | Radiator |
1.2 | High-voltage system radiator |
1.3 | Low-temperature radiator |
1.4 | Condenser |
P20.20-A091-05
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. | |
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. | |
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. | |
Topical note | Information on preventing damage to electronic components due to electrostatic discharge | ||
Topical note | Notes on self-locking nuts and bolts | ||
Topical note | Protect air conditioning circuit and components from moisture when carrying out repair work | ||
Topical note | Notes on avoiding damage through contamination and foreign objects | ||
Notes on handling refrigerant R1234yf | |||
| Remove/install | ||
1 | Drain refrigerant circuit. | ||
2 | Drain coolant of auxiliary circuit. | Engine 654 in model 253.311/911 | |
3 | Remove fan unit. | ||
4 | Remove front bumper. | ||
5 | Remove coolant lines (4, 5) from high-voltage system radiator (1.2) and guide out of radiator air ducting (1.1). | Engine 654 in model 253.311/911 | |
6 | Remove side cold-air lines from radiator unit (1), unclip basic carrier of high-voltage system radiator (1.2) and remove downward together with high voltage system radiator (1.2). | Engine 654 in model 253.311/911 | |
7 | Remove coolant line (12) from the low temperature cooler (1.3). | ||
8 | Remove refrigerant line (6) from the capacitor (1.4) and seal openings with suitable stop plugs. | ||
| Compressor oils (specification 362.1) | ||
Installation: Install new seal and wet with compressor oil. | |||
Nut, line to condenser | |||
Record plug | |||
9 | Remove refrigerant line (7) from separating point and seal openings with suitable stop plugs. | ||
| Compressor oils (specification 362.1) | ||
Installation: Install new seals and wet with compressor oil. | |||
Nut, refrigerant line to connecting point | |||
Record plug | |||
10 | Remove retaining clip (8). | Engine 654 in model 253.311/911 | |
Dismantling tool | |||
11 | Remove bracket (11) from radiator unit (1). | Engine 654 in model 253.311/911 | |
12 | Release and disconnect electrical connectors (9) and remove electrical wiring harnesses from the left bracket (10) of the cooler unit (1) using suitable means. | The number of electrical connectors varies according to vehicle equipment. | |
13 | Secure cooler unit against falling down using suitable means. | ||
14 | Remove screws (10s), fold up brackets (10), remove lower section, and remove brackets (10) from the cooler unit (1). | Installation: Ensure that the brackets (10) are seated correctly on the dampings. | |
15 | Carefully remove radiator unit (1) downward and place on a suitable surface. | | |
Aid of helper required. | |||
16 | Install in the reverse order. |
000 589 95 63 00
Dismantling tool
129 589 00 91 00
Record plug