Remove/install expansion valve - AR83.30-P-5520RK
MODEL 231
MODIFICATION NOTES
| 05.10.2016 | Safety note added | AS83.00-Z-0006-01A | |
| 30.09.2016 | Safety note added | AS83.00-Z-0007-01A | |
| 30.09.2016 | Safety note added | AS83.00-Z-0001-01A | |
| 30.09.2016 | "Technical note" added | AH83.30-P-0005-01A | |
| 30.09.2016 | General note added | AH83.30-P-0003-02A | |
| 30.09.2016 | General note added | AH83.30-N-0003-01A |
| 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 | |
| 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. Model 231 except code 2U8 (Alternative refrigerant) |
AS83.00-Z-0006-01A | |
| 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. Model 231 with code 2U8 (Alternative refrigerant) |
AS83.00-Z-0007-01A | |
| Procedure for a damaged or leaky air conditioning system | AH83.30-N-0004-01A | ||
| Protect air conditioning circuit and components from moisture when carrying out repair work | AH83.30-P-0005-01A | ||
| Notes on handling refrigerant R1234yf | Model 231 with code 2U8 (Alternative refrigerant) |
AH83.30-P-0003-02A | |
| Notes on handling refrigerant R134a | Model 231 except code 2U8 (Alternative refrigerant) |
AH83.30-N-0003-01A | |
| Remove/install | |||
| 1 | Drain air conditioning system | AR83.30-P-1760YF | |
| 2 | Remove high and low-pressure lines of air conditioning service unit on vehicle | ||
| 3 | Remove windshield wiper system | AR82.30-P-6400RK | |
| 4 | Unscrew nut (2) | *BA83.30-P-1020-01A | |
| 5 | Pull low-pressure line (3) out of expansion valve (1) | ||
| Compressor oils (specification 362.1) | MB 362.1 refrigerant compressor oil (Specification 362.1). See https://bevo.mercedes-benz.com/index.php?language_id=1 | ||
| 6 | Seal openings of low-pressure line (3) and expansion valve (1) using suitable stop plugs | The openings of the low pressure line (3) and on the expansion valve (1) must be sealed. Otherwise, penetrating dirt and moisture will damage the air conditioning system. |
|
| Fig 2 | |||
| 7 | Unscrew nut (4) | *BA83.30-P-1020-01A | |
| 8 | Pull high-pressure line (5) out of expansion valve (1) | ||
| Compressor oils (specification 362.1) | MB 362.1 refrigerant compressor oil (Specification 362.1). See https://bevo.mercedes-benz.com/index.php?language_id=1 | ||
| 9 | Seal openings of high-pressure line (5) and expansion valve (1) using suitable stop plugs | The openings of the high pressure line (5) and on the expansion valve (1) must be sealed. Otherwise, penetrating dirt and moisture will damage the air conditioning system. |
|
| Fig 2 | |||
| 10 | Remove screws/bolts (6), remove expansion valve (1) and seal connection lines | Tighten screws/bolts (6) alternately. To avoid tilting of the expansion valve (1). |
|
| *BA83.30-P-1002-01A | |||
| 11 | Install in the reverse order | ||
| Check | |||
| 12 | Evacuate the air conditioning system, refill it, and then check the system to make sure that it functions correctly and does not leak | AR83.30-P-1760YF |
AIR CONDITIONING
| Number | Designation | Model 231 | |
|---|---|---|---|
| BA83.30-P-1002-01A | Screw/bolt on expansion valve | Nm | 5, 5 |
AIR CONDITIONING
| Number | Designation | Model 231 | |
|---|---|---|---|
| BA83.30-P-1020-01A | Nut, refrigerant line to expansion valve | Nm | 8 |