Remove/install refrigerant line between interior compartment expansion valve and front connecting point - AR83.30-P-7814MEX
MODEL 451.390/392/490/492
Shown on model 451.490, left-hand drive vehicle with code V03 (Battery cooling system)
Fig 1: Identifying Refrigerant Line Between Interior Compartment Expansion Valve And Front Connecting Point Remove/Install Components (1 Of 2)
Fig 2: Identifying Refrigerant Line Between Interior Compartment Expansion Valve And Front Connecting Point Remove/Install Components (2 Of 2)
| Risk of explosion caused by welding or soldering work on closed air conditioning system. Risk of poisoning caused by inhaling overheated refrigerant vapors. Risk of injury to skin and eyes caused by contact with liquid refrigerant. | Do not 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 areas. Carry out repair work on the air conditioning system circuit only after the system has been drained. | AS83.00-Z-0001-01A | |
| Risk of death when touching components on vehicles with high-voltage on-board electrical system | Do not touch components and open lines of the high-voltage on-board electrical system. Persons who wear electronic implants (e.g. cardiac pacemakers), must not carry out any work on high-voltage on-board electrical systems. | AS54.00-Z-0001-01A | |
| Protect air conditioning circuit and components from moisture when carrying out repair work | AH83.30-N-0005-01A | ||
| Procedure for a damaged or leaky air conditioning system | AH83.30-N-0004-01A | ||
| Note on high-voltage on-board electrical system | AH54.00-P-0010-01A | ||
| Information on preventing damage to electronic components due to electrostatic discharge | AH54.00-P-0001-01A | ||
| Notes on handling refrigerant R134a | AH83.30-N-0003-01A | ||
| Remove/install | |||
| 1 | Remove transmitter key and mains plug | ||
| 2 | Remove front module | AR62.30-P-1575MCC | |
| 3 | Drain air conditioning system | AR83.30-P-1760MCC | |
| 000 588 04 82 00 Air conditioning service unit | WS83.00-P-0031B | ||
| 4 | Disconnect air conditioning service unit | ||
| Risk of death caused by vehicle slipping or toppling off of the lifting platform. | Align vehicle between vehicle lift columns and position the four support plates at the vehicle lift support points specified by the vehicle manufacturer. | AS00.00-Z-0010-01A | |
| 5 | Raise vehicle with vehicle lift | ||
| 6 | Remove front underfloor paneling | ||
| 7 | Remove right diagonal strut | Model 451.490/492 | AR61.10-P-5138MEV |
| 8 | Remove bracket (3) | ||
| 9 | Unscrew nut (1) | *BA83.55-P-1011-01V | |
| 10 | Disconnect refrigerant intake line (2) from rear refrigerant line | ||
| Compressor oils (specification 362.0) | MB 362.0 compressor oil A 001 989 08 03 | ||
| 11 | Unscrew nut (5) | Model 451.390/392/490/492 with code V03 (Battery cooling system) |
*BA83.55-P-1006-01V |
| 12 | Disconnect refrigerant intake line (2) and refrigerant line (4) from electric expansion valve (battery) (Y19/3) | Model 451.390/392/490/492 with code V03 (Battery cooling system) |
|
| Compressor oils (specification 362.0) | MB 362.0 compressor oil A 001 989 08 03 | ||
Otherwise penetrating dirt and moisture will damage components that are connected to the refrigerant circuit. |
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| 13 | Lower vehicle with vehicle lift | ||
| 14 | Unscrew nut (8) | ||
| 15 | Disconnect refrigerant pressure line (9) and refrigerant line (4) from condenser | ||
| Compressor oils (specification 362.0) | MB 362.0 compressor oil A 001 989 08 03 | ||
| 16 | Remove mount (7) and swivel right front cooling module (6) outwards in direction of arrow | ||
| Figure | |||
| 17 | Unscrew nut (11) | *BA83.55-P-1006-01V | |
| 18 | Disconnect refrigerant intake line (2) and refrigerant line (4) from electric expansion valve (interior) (Y19/1) | ||
| Compressor oils (specification 362.0) | Otherwise penetrating dirt and moisture will damage components that are connected to the refrigerant circuit. |
MB 362.0 compressor oil A 001 989 08 03 | |
| 19 | Release and disconnect electrical connector from electric drive coolant pump and on-board charger (M46) | ||
| 20 | Unscrew nuts (10) and remove electric drive coolant pump and onboard charger (M46) and put to one side | ||
| 21 | Open bracket (12) | ||
| 22 | Remove refrigerant intake line (2) towards the front top | ||
| 23 | Install new desiccant cartridge | AR83.30-P-6525MCC | |
| 24 | Install in the reverse order |
REFRIGERANT COMPRESSOR
| Number | Designation | Engine 780.993 | |
|---|---|---|---|
| BA83.55-P-1006-01V | Nut, refrigerant line to expansion valve | Nm | 11 |
REFRIGERANT COMPRESSOR
| Number | Designation | Engine 780.993 | |
|---|---|---|---|
| BA83.55-P-1011-01V | Nut to refrigerant line separating point | Nm | 11 |