Remove/install refrigerant lines at refrigerant compressor - AR83.30-P-7810MEX
MODEL 451.390/392/490/492 with ENGINE 780.993
| 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 | ||
| Note on high-voltage battery | AH54.10-P-0006-01MEV | ||
| 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 | Drain air conditioning system | AR83.30-P-1760MCC | |
| 2 | Disconnect air conditioning service unit | ||
| 000 588 04 82 00 Air conditioning service unit | WS83.00-P-0031B | ||
| 3 | Remove transmitter key and mains plug | ||
| 4 | Connect Star Diagnosis and enable high voltage on-board electrical system | ||
| AD00.00-P-2000-04MCC | |||
| 5 | Remove high-voltage battery | AR54.10-P-1140MEX | |
| 6 | Unscrew nuts (3, 4) | *BA83.55-P-1011-01V | |
| 7 | Unclip refrigerant intake line (1) and refrigerant pressure line (2) from bracket (5) and disconnect from front refrigerant lines | ||
| 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 | |
| 8 | Remove bolt (6) | ||
| 9 | Open bracket (7) and remove | ||
| 10 | Remove fender liner (10) in right fender | Model 451.390/392/490/492 with engine 780.993 except code 494 (US version) |
AR88.10-P-1400MCC |
| Model 451.390/392/490/492 with engine 780.993 with code 494 (US version) |
AR88.10-P-1400MCU | ||
| 11 | Unscrew bolt (8) | ||
| 12 | Open bracket (9) and remove | ||
| 13 | Lower vehicle with lifting platform | ||
| 14 | Remove interior flap above engine | AR88.40-P-1100-03MCC | |
| 15 | Release and disconnect electrical connector (11) | ||
| 16 | Open bracket (12) | ||
| 17 | Remove cable tie (19) | ||
| 18 | Remove screw/bolt (13) | *BA83.55-P-1003-01V | |
| 19 | Remove refrigerant intake line (1) from electric refrigerant compressor (A9/6) and put to one side | ||
| 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 | |
| 20 | Unscrew nut (15) at connecting point (16) | *BA83.55-P-1011-01V | |
| 21 | Remove refrigerant pressure line (2) from connecting point (16) and put to one side | ||
| 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 | |
| 22 | Unscrew screw/bolt (17) from bracket of refrigerant pressure line (2) | ||
| 23 | Unscrew screw/bolt (14) | *BA83.55-P-1003-01V | |
| 24 | Remove refrigerant line (18) from electric refrigerant compressor (A9/6) | ||
| 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. |
|||
| 25 | Raise vehicle with vehicle lift | ||
| 26 | Remove refrigerant intake line (1) and then refrigerant pressure line (2) from below | ||
| 27 | Unscrew refrigerant pressure sensor 2 (B12/1) | When replacing refrigerant intake line (1). |
*BA83.30-P-1001-01L |
| 28 | Remove bracket (12) | When replacing the refrigerant line (18). | |
| 29 | Install new desiccant cartridge | AR83.30-P-6525MCC | |
| 30 | Install in the reverse order |
AIR CONDITIONING
| Number | Designation | MODEL 451.3/4 except 451.390/490 | Model 451.390/490 | |
|---|---|---|---|---|
| BA83.30-P-1001-01L | Refrigerant pressure sensor to AC line | Nm | 10 | 10 |
REFRIGERANT COMPRESSOR
| Number | Designation | Engine 780.993 | |
|---|---|---|---|
| BA83.55-P-1003-01V | Bolt, refrigerant line to refrigerant compressor | Nm | 20 |
REFRIGERANT COMPRESSOR
| Number | Designation | Engine 780.993 | |
|---|---|---|---|
| BA83.55-P-1011-01V | Nut to refrigerant line separating point | Nm | 11 |