Perform air conditioning system leak test - AR83.30-P-1011MEV
MODEL 451.391/491
Shown on MODEL 451.491
| 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 | |||
| 1 | Remove transmitter key and mains plug | ||
| 2 | Remove front CBS | AR88.00-P-1010MCC | |
| 3 | Remove maintenance flap | ||
| 4 | Remove rear CBS | AR88.20-P-1900MCC | |
| 5 | Remove front axle carrier support | AR33.10-P-0002MEV | |
| 6 | Lower rear drive module | AR01.00-P-3050MEV | |
| 7 | Pour contrast medium into air conditioning system | ||
| Check | |||
| 8 | Inspect condenser filling valve with air conditioning system leak detector | If leaks are found, the condenser filling valve must be replaced. ↓ Remove/install condenser filling valve |
AR83.30-P-5536MCC |
| 9 | Inspect intake manifold filling valve with air conditioning system leak detector | If leaks are found, the intake manifold filling valve must be replaced. ↓ Remove/install intake manifold filling valve |
AR83.30-P-5535MCC |
| 10 | Inspect condenser with air conditioning leak detector | If leaks are found, the condenser must be replaced. ↓ Remove/install condenser |
AR83.30-P-6540MCC |
| 11 | Check vehicle interior air conditioning expansion valve using air conditioning system leak detector | If leaks are found, the expansion valve must be replaced. | |
| ↓ Remove/install vehicle interior expansion valve |
AR83.55-P-5522MEV | ||
| 12 | Check high-voltage battery cooling expansion valve using air conditioning leak detector | In the event of leaks, the high-voltage battery cooling expansion valve is to be replaced. ↓ Remove/install high-voltage battery cooling expansion valve |
AR83.55-P-5521MEV |
| 13 | Inspect refrigerant compressor with air conditioning system leak detector | If leaks are found, the refrigerant compressor must be replaced. ↓ Refrigerant compressor, remove/install |
AR83.55-P-5300MEV |
| 14 | Check drain hose (1) with air conditioning system leak detector | If leaks are found, the evaporator must be replaced. ↓ Remove/install air conditioner housing |
AR83.30-P-5200MEV |
| 15 | Inspect refrigerant lines with air conditioning leak detector | If leaks are found, the refrigerant lines affected must be replaced. ↓ Remove/install refrigerant lines at refrigerant compressor |
AR83.30-P-7810MEV |
| Remove/install front thrust-side refrigerant line | AR83.50-P-6825MEV | ||
| Remove/install front intake-side refrigerant line | AR83.50-P-6925MEV | ||
| Remove/install refrigerant line between condenser and expansion valves | AR83.30-P-7817MEV | ||
| Install | |||
| 16 | Position rear drive module | AR01.00-P-3050MEV | |
| 17 | Install front axle carrier support | AR33.10-P-0002MEV | |
| 18 | Install CBS rear | AR88.20-P-1900MCC | |
| 19 | Install maintenance flap | ||
| 20 | Install front CBS | AR88.00-P-1010MCC |