AR83.30-W-5540E | Remove/install evaporator | 3.9.08 |
MODEL 375.4 with BODY 375.860 with CODE (H03) Air conditioning in front end
MODEL 940, 942, 943, 944 with BODY 944.890 with CODE (H03) Air conditioning in front end
W83.30-1097-06
3 Heater housing, top part
5 Blower housing
9 Heater housing, bottom part
W83.20-1088-09
4 Screw
5 Blower housing
11 Electrical line
8 Heater housing, center part
9 Heater housing, bottom part
W83.30-1098-06
1 Evaporator
9 Heater housing, bottom part
10 Expansion valve
A13b2 Evaporator temperature sensor
Modification notes
30.6.08 | "Oil filling quantity of refrigerant circuit must be topped up when evaporator (1) is replaced" added. | Operation step 7 | |
"Additional oil filling quantity after replacing evaporator (1)" added. | Operation step 7 | ||
"Remove expansion valve (10)" added. | Step 8 |
| Remove/install | ||
Danger! | 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. | 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 areas. Carry out repair work on the air conditioning system circuit only after the system has been discharged. | |
| Protect air conditioning circuit and components from moisture when carrying out repair work | ||
| Notes on handling R134a refrigerant | Air conditioning with refrigerant R134a | |
Danger! | Risk of injury to skin and eyes caused by scalding from contact with hot coolant spray. Risk of poisoning caused by swallowing coolant. | Do not open cooling system unless coolant temperature is below 90°C. Open cap slowly and release the pressure. Do not pour coolant into beverage containers. Wear protective gloves, protective clothing and safety glasses. | |
1 | Remove heater housing | ||
| Notes on coolant | ||
2 | Remove top part of heater housing (3) | ||
3 | Remove blower housing (5) from heater housing | To do this, remove screws (4) and disconnect electrical connector from blower motor. | |
4 | Expose electrical lines (11) at bottom part of heater housing (9). | Installation: Install new cable ties. | |
5 | Detach center part of heater housing (8) from bottom part of heater housing (9) | ||
6 | Pull evaporator temperature sensor (A13b2) out of evaporator (1) | ||
7 | Remove evaporator (1) from bottom part of heater housing (9) | Installation: Replace O-rings. | |
Oil filling quantity of refrigerant circuit must be topped up when evaporator (1) is replaced. | |||
Additional oil filling quantity after replacing evaporator (1) | |||
8 | Remove expansion valve (10) | Only when replacing evaporator (1) or expansion valve (10). | |
9 | Install in the reverse order | ||
10 | Check air conditioning for proper operation |
Refrigerant compressor
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