Remove/Install Radiator Unit - AR20.20-P-3871SVZ
Engine 279 in model 223
| Risk of fire due to ignition of R1234yf refrigerant on hot components. Risk of poisoning caused | Never perform welding work on or near a closed air conditioning system. No smoking or open | AS83.00-Z-0007-01A | |
| 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 | 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. | ||
| 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. | AS83.00-Z-0006-01A | |
| 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 overpressure. Do not pour coolant into beverage containers. Wear protective gloves, protective clothing and safety glasses. |
AS20.00-Z-0001-01A | |
| 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. Deburr repair panels. |
AS00.00-Z-0017-01A | |
| Notice | Information on preventing damage to electronic components due to electrostatic discharge | AH54.00-P-0001-01A | |
| Notice | Notes on avoiding damage through contamination and foreign objects | AH00.00-P-5000-01A | |
| Notice | Notes on self-locking nuts and bolts | AH00.00-P-0001-01KOA | |
| Notice | Protect air conditioning circuit and components from moisture when carrying out repair work | AH83.30-P-0005-01KOA | |
| Notes on handling refrigerant R134a | AH83.30-P-0003-01KOA | ||
| Notes on handling refrigerant R1234yf | AH83.30-P-0003-02A | ||
| Remove/install | |||
| 1 | Discharge air conditioning system. | AR83.30-P-1760S | |
| 2 | Remove fan unit. | AR20.40-P-5050SVZ | |
| 3 | Remove refrigerant line (2) from cooler unit (1), place to one side, and seal openings with suitable stop plugs. | *BA83.30-P-1008-01P | |
| Fig 1 | |||
| Fig 4 | |||
| 4 | Remove coolant line (3) from cooler unit (1) and seal openings with protective covers. | AR20.20-P-7441-01RQ | |
| Fig 3 | |||
| 5 | Remove refrigerant line (4) from cooler unit (1), place to one side, and seal openings with suitable stop plugs. | *BA83.30-P-1008-01P | |
| Fig 1 | |||
| Fig 4 | |||
| 6 | Remove circulation pump for low-temperature circuit. | AR09.41-P-6926SVZ | |
| 7 | Disconnect electrical connector (5) at refrigerant pressure sensor (B12) and remove electrical wiring harness (6) from radiator support. | Fig 2 | |
| 8 | Unscrew screws (7, 8). | ||
| 9 | Release holders (9, 10) in direction of arrow and remove. | ||
| 10 | Carefully remove cooler unit (1) downward. | Do not tilt cooler unit (1) or hit it against other parts. Otherwise leaks and damage can occur. |
|
| Check | |||
| 11 | Check cooler unit (1) for damage. | If damage is present: ↓ Replace damaged assembly part. |
AR20.20-P-3865-14S |
| 12 | Install in the reverse order. |
AIR CONDITIONING
| Number | Designation | Model 223 with code 2U8 (Alternative refrigerant) | Model 223 except code 2U8 (Alternative refrigerant) | ||
|---|---|---|---|---|---|
| BA83.30-P-1008-01P | Bolt/nut, refrigerant line to condenser/gas cooler | M6 | Nm | 12 | 12 |