S83.55-A006-78
Shown with CODE HZ7 (Semi-automatically controlled air conditioning, TEMPMATIC in rear) |
1 | Refrigerant compressor | 4 | Screw | 7 | Screw | ||
2 | Electrical connector | 5 | Refrigerant line | 8 | Engine support | ||
3 | Refrigerant line | 6 | Screw |
Shown with engine mount removed |
1 | Refrigerant compressor |
3 | Refrigerant line |
4 | Screw |
5 | Refrigerant line |
6 | Screw |
8 | Engine support |
9 | Bolts |
S83.55-A007-76
Warning | 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. | |
Danger | 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. | |
Topical note | Protect air conditioning circuit and components from moisture when carrying out repair work | ||
Notes on handling refrigerant R134a | |||
Notes on handling refrigerant R1234yf | |||
| Remove/install | ||
1 | Discharge air conditioning system. |
| |
Model 447 except code HX1 (R-1234yf refrigerant) | |||
2 | Remove the alternator. | ||
3 | Remove poly-V-belt from belt pulley of refrigerant compressor (1). | ||
4 | Disconnect electrical connection (2). | ||
5 | Remove screws (4, 6). | Bolt, refrigerant line on refrigerant compressor | |
6 | Pull refrigerant lines (3, 5) out of refrigerant compressor (1). | ||
| Compressor oils (specification 362.1) | ||
Installation: Replace sealing rings and coat with compressor oil. | |||
7 | Seal openings of refrigerant lines (3, 5) and refrigerant compressor (1) with suitable stop plugs. | Record plug | |
8 | Unscrew screw (7) from left engine carrier (8) by approx. 10 mm. | Bolt, engine mount to engine support | |
9 | Remove lower engine compartment paneling. | ||
10 | Raise engine from below at left engine carrier (8) using universal major assembly lifter by approx. 10 mm. | ||
| 000 588 11 62 00 Major assembly mount | ||
| |||
Installation: Lower engine again using universal major assembly lifter and slide universal major assembly lifter to one side. | |||
11 | Remove screws (9) from refrigerant compressor (1). | Screw, refrigerant compressor to oil filter housing/major assembly carrier | |
12 | Lower engine again using universal major assembly lifter and slide universal major assembly lifter to one side. | ||
| 000 588 11 62 00 Major assembly mount | ||
| |||
Installation: Raise engine from below at left engine carrier (8) using universal major assembly lifter by approx. 10 mm. | |||
13 | Lower vehicle. | ||
14 | Remove refrigerant compressor (1) upwards out of the engine compartment. | ||
15 | Install in the reverse order. | ||
16 | Break in refrigerant compressor (1). | If the refrigerant compressor (1) has been replaced. | |
| |||
Menu option: Control unit adaptations. | |||
Warning | 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. | |
17 | Perform engine test run and check refrigerant compressor (1) for proper operation. |
129 589 00 91 00
Record plug
Referenced documents
- ad0000s200004e Connect STAR DIAGNOSIS and read out fault memory
- ah8330n000301a Notes on handling refrigerant R134a
- ah8330n000501a Protect air conditioning circuit and components from moisture when carrying out repair work
- ah8330p000302a Notes on handling refrigerant R1234yf
- ar1540s5032ea Remove/install alternator
- ar6120s1105e
- ar6120s1105e Remove/install lower engine compartment lining
- ar8330s1760e Drain, evacuate and recharge air conditioning, check for proper operation and check for leaks
- ar8330s1760ef Drain, evacuate and recharge air conditioning, check for proper operation and check for leaks
- as0000z000501a 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.
- as8300z000601a 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
- as8300z000701a 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
- bb0040p036201a Compressor oils (specification 362.1)
- ws0100p0092b 000 588 11 62 00 Major assembly mount