Remove/Install Second Refrigerant Compressor - Ar83.55-D-5312TSR
Engine 642 in model 907.6/7
with code HK4 (Rear air conditioning, reinforced)
Engine 651 in model 907.6/7
with code HK4 (Rear air conditioning, reinforced)
Engine 654.9 in model 907.6/7
with code HK4 (Rear air conditioning, reinforced)
Shown on engine 642
Shown on ENGINE 651
| 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 | |
| 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. | AS83.00-Z-0007-01A | |
| 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. | AS83.00-Z-0006-01A | |
| 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-N-0005-01A | ||
| Notes on handling refrigerant R1234yf | AH83.30-P-0003-02A | ||
| Notes on handling refrigerant R134a | AH83.30-N-0003-01A | ||
| Remove/install | |||
| 1 | Drain roof A/C system. | If the refrigerant compressor (6) is replaced, additional compressor oil must not be added. Otherwise, the roof-mounted air conditioning system may malfunction or be damaged. |
AR83.50-D-0002TSR |
| 2 | Remove poly-V-belt (1). | Engine 654.9 | AR13.21-D-0161TSM |
| Engine 651 | AR13.21-D-0161TSR | ||
| Engine 642 | AR13.21-D-0161TSV | ||
| 3 | Disconnect electrical connector (5). | ||
| 4 | Remove refrigerant lines (3, 4). | ||
| Compressor oils (specification 362.1) | BB00.40-P-0362-01A | ||
| *BA83.30-N-1002-01TS | |||
| Fig 1 | |||
| 5 | Remove refrigerant compressor (6). | *BA83.55-N-1001-02TS | |
| 6 | Install in the reverse order. |
| Number | Designation | Model 907 with engine 654.9 | Model 907 with engine 274, 642, 651 | |
|---|---|---|---|---|
| BA83.30-N-1002-01TS | Bolt, refrigerant line to refrigerant compressor | Nm | 20 | 20 |
| Number | Designation | Model 907 with engine 654.9 | Model 907 with engine 651 | |
|---|---|---|---|---|
| BA83.55-N-1001-02TS | Bolt, A/C compressor to major assembly carrier | Nm | 20 | 20 |
| Number | Designation | Model 907 with engine 642 | |
|---|---|---|---|
| BA83.55-N-1001-02TS | Bolt, A/C compressor to major assembly carrier | Nm | 20 |