Remove/Install AC Refrigerant Compressor - AR83.55-S-5310EG
Model 447 With Engine 274 With Code HH9 (Air conditioner, automatic heater control)
Model 447 448 With Engine 274 With Code HH4 (THERMOTRONIC automatic climate control)
MODIFICATION NOTES
| 12.02.2018 | "Breaking in refrigerant compressor when replacing", added. | Operation step 10 |
Fig 1: AC Refrigerant Compressor Components Location - Model 447 With Engine 274 With Code HH9; HH4 (Shown With Transmission 711.6)
Shown On Model 447 With Transmission 711.6
Shown On Model 447, 448 With Transmission 722.9
| 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. | AS83.00-Z-0007-01A | |
| 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 | |
| Notice | Protect air conditioning circuit and components from moisture when carrying out repair work | AH83.30-P-0005-01KOA | |
| Notice | Procedure for a damaged or leaky air conditioning system | AH83.30-P-0004-01KOA | |
| Notes on handling refrigerant R1234yf | AH83.30-P-0003-02A | ||
| Notes on handling refrigerant R134a | AH83.30-P-0003-01KOA | ||
| Remove/install | |||
| 1 | Drain air conditioning system | Model 447 except code HX1 (R-1234yf refrigerant), model 448 | AR83.30-S-1760E |
| Model 447 with code HX1 (R-1234yf refrigerant) | AR83.30-S-1760EF | ||
| 2 | Unfasten coolant expansion reservoir and swivel out of working area with attached coolant hoses | AR20.30-S-4950E | |
| 3 | Remove refrigerant lines (1) from refrigerant compressor (5) | *BA83.30-Z-1012-01KOA | |
| Compressor oils (specification 362.1) | BB00.40-P-0362-01A | ||
| 4 | Seal openings on refrigerant lines (1) and refrigerant compressor (5) using stop plugs | Fig 2 | |
| 5 | Remove charge air hose downstream of the charge air cooler | AR09.41-S-8625EG | |
| 6 | Remove poly-V-belt from belt pulley of refrigerant compressor (5) | AR13.22-S-1202EG | |
| 7 | Disconnect electrical connection (2) | ||
| 8 | Remove screws (3, arrow) and remove refrigerant compressor (5) | If necessary, carefully push oil lines (4) to one side. |
*BA83.30-Z-1018-01KOA |
| 9 | Install in the reverse order | ||
| 10 | Carry out breaking in of refrigerant compressor (5) using vehicle diagnosis system | When replacing the refrigerant compressor (5). | |
| AD00.00-S-2000-04E |
AIR CONDITIONING
| Number | Designation | Model 447 with engine 274, 651 Model 448 with engine 274 | |
|---|---|---|---|
| BA83.30-Z-1012-01KOA | Screw, refrigerant line on refrigerant compressor | Nm | 20 |
AIR CONDITIONING
| Number | Designation | Model 447 with engine 274, 651 Model 448 with engine 274 | |
|---|---|---|---|
| BA83.30-Z-1018-01KOA | Screw, A/C compressor to major assembly carrier | Nm | 20 |