Remove/Install Refrigerant Compressor - AR83.55-P-5310MRI
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Engine 264 in model 205, 253
MODIFICATION NOTES
| 23.09.2020 | Work procedure adapted. | Operation step 3, 4, 21, 22 | |
| 24.09.2020 | Special tool added. | Operation step 17, 18 | 000 589 93 63 00 |
Shown on engine 264 with code B01 (48V technology)
Shown on engine 264 without code B01 (48V technology)
| 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 R1234y 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 | |
| Notice | Protect air conditioning circuit and components from moisture when carrying out repair work | AH83.30-P-0005-01KOA | |
| Notice | Information on preventing damage to electronic components due to electrostatic discharge | AH54.00-P-0001-01A | |
| 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 | ||
| Remove | |||
| 1 | Discharge air conditioning system. | AR83.30-P-1760LW | |
| 2 | Remove engine air intake duct upstream of air filter. | ||
| 3 | Remove fan unit. | Engine 264 in model 253 | |
| AR20.40-P-5050MRP | |||
| 4 | Mount protective plate on cooler. | Engine 264 in model 253 | |
| WF58.50-P-0110-04A | |||
| 5 | Remove poly-V-belt. | Engine 264 in model 205, 253 with code B01 (48V technology) | AR13.22-P-1202MRM |
| Engine 264 in model 205, 253 except code B01 (48V technology) | AR13.22-P-1202MRI | ||
| 6 | Release and disconnect electrical connector (4). | ||
| 7 | Remove screw (8). | ||
| 8 | Remove low-pressure line (7) and seal openings with suitable stop plugs. | Fig 4 | |
| 9 | Remove screw (6). | ||
| 10 | Remove high-pressure line (5) and seal openings with suitable stop plugs. | Fig 4 | |
| 11 | Remove screws (2, 9). | ||
| 12 | Remove screw (10) of coolant line (11). | Engine 264 in model 205 except code B01 (48V technology) |
|
| 13.1 | Remove screw (3) and lift out refrigerant compressor with magnetic clutch (A9/7). | Engine 264 in model 205, 253 with code B01 (48V technology) | |
| 13.2 | Unscrew screw (3), remove together with holder (12) and lift out refrigerant compressor with magnetic clutch (A9/7). | Engine 264 in model 205 except code B01 (48V technology) |
|
| Install | |||
| 14.1 | Position refrigerant compressor with magnetic clutch (A9/7) on timing case cover and tighten screw (3) slightly by hand. | Engine 264 in model 205, 253 with code B01 (48V technology) | |
| 14.2 | Position refrigerant compressor with magnetic clutch (A9/7) on timing case cover, insert holder (12) and tighten screw (3) slightly by hand. | Engine 264 in model 205 except code B01 (48V technology) |
|
| 15 | Tighten screws (2, 3, 9). | *BA83.55-P-1001-02D | |
| 16 | Tighten screw (10) of coolant line (11). | Engine 264 in model 205 except code B01 (48V technology) |
|
| *BA00.10-P-1002-04A | |||
| 17 | Remove stop plugs, attach high-pressure line (5) with new sealing ring and tighten screw (6) | *BA83.55-P-1002-02D | |
| Fig 3 | |||
| 18 | Remove stop plugs, attach low-pressure line (7) with new sealing ring and tighten screw (8) | *BA83.55-P-1002-02D | |
| Fig 3 | |||
| 19 | Connect electrical connector (4) until it locks into place. | ||
| 20 | Install poly-V-belt. | Engine 264 in model 205, 253 with code B01 (48V technology) | AR13.22-P-1202MRM |
| Engine 264 in model 205, 253 except code B01 (48V technology) | AR13.22-P-1202MRI | ||
| 21 | Remove protective plate from radiator. | Engine 264 in model 253 | |
| WF58.50-P-0110-04A | |||
| 22 | Install fan unit. | Engine 264 in model 253 | |
| AR20.40-P-5050MRP | |||
| 23 | Install engine air intake duct upstream of air filter. | ||
| 24 | Evacuate and fill air conditioning system. | AR83.30-P-1760LW | |
| Concluding tasks | |||
| 25 | Perform commissioning of refrigerant compressor with magnetic clutch (A9/7) using diagnostic system. | When replacing refrigerant compressor with magnetic clutch (A9/7). | |
| AD00.00-P-2000-04B | |||
| Risk of burn injuries , suffocation and poisoning when working on the exhaust system and the components connected to it. Risk of suffocation and risk of poisoning caused by inhalation of gaseous and solid components of the exhaust. Risk of poisoning caused by skin contact with solid components of the exhaust. | Wear protective clothing and safety glasses. Use the extraction system. Move people out of the danger zone. | AS49.00-Z-0001-01A | |
| Risk of accident from vehicle starting off by itself when engine running. Risk of injury (bruises and burns) resulting from working on the engine while it is being started or when it is running. | Secure vehicle to prevent it from starting off by itself. Wear closed and snug-fitting work clothes. Do not touch hot or rotating parts. | AS00.00-Z-0005-01A | |
| 26 | Perform engine test run, check air conditioning system for proper operation while doing so. |
METRIC SCREWS/BOLTS AND NUTS AS PER MBN 10 105, 10 143
| Number | Designation | 8.8 | 10.9 | |
|---|---|---|---|---|
| BA00.10-P-1002-04A | M6X1 | Nm | 9 | 13 |
REFRIGERANT COMPRESSOR
| Number | Designation | Engine 264 | |
|---|---|---|---|
| BA83.55-P-1001-02D | Bolt, refrigerant compressor to timing case/engine carrier | Nm | 20 |
REFRIGERANT COMPRESSOR
| Number | Designation | Engine 264 | |
|---|---|---|---|
| BA83.55-P-1002-02D | Bolt, refrigerant line to refrigerant compressor | Nm | 20 |