4 | Grommet |
X299 | Roof air conditioning fan connector |
X310b1 | High pressure switch |
D83.50-1220-01
D83.50-1136-09
1 | Evaporator unit | 5 | Rubber-absorber disk | 9 | Bitumen insulation tape | ||
2 | Terminal stud, terminal 30 | 6 | Condensation hose | 10 | Union nut | ||
3 | Ground line, terminal 31 | 7 | Sheet metal screw | 11 | Union nut | ||
4 | Grommet | 8 | Interior lights wiring harness | X220 | Roof air conditioning connector |
| Remove/install | ||
Danger | Risk of death caused by falling from vehicle roof. Risk of injury to other persons caused by falling objects during work in roof area. | Model 903.66 (except 903.662), 903.67, 904.66 | |
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 drained. | |
Topical note | Protect air conditioning circuit and components from moisture when carrying out repair work | Model 903.66 (except 903.662), 903.67, 904.66 | |
Topical note | Procedure for a damaged or leaky air conditioning system | ||
Notes on handling refrigerant R134a | |||
1 | Disconnect battery ground line | ||
Danger | Risk of fire/risk of explosion due to short circuit and escaping oxyhydrogen gas. Risk of (burn) injury caused by caustic burns to eyes, skin and mucous membranes from battery electrolyte/mist, short circuit and arcing. Risk of poisoning caused by swallowing battery electrolyte or absorption of lead through the skin or body orifices. Risk of death due to voltage U >= 30 V AC and U >= 60 V DC. | No fires, sparks, open flames, or smoking. Wear acid-resistant gloves, clothing, and glasses. Pour battery acid only into suitable and appropriately marked containers. | |
Topical note | Notes on battery | ||
2 | Remove evaporator unit trim (1) | ||
3 | Drain air conditioning system | ||
4 | Remove paneling of condenser unit | ||
5 | Push grommet (4) inwards | Installation: Seal grommet (4) with sealant. | |
Terostat 8590 | |||
6 | Disconnect condenser fan connector (X299) and high-pressure switch connector (X310b1), and pull lines into interior compartment | ||
7 | Disconnect roof air conditioning connector (X220) | ||
8 | Detach wiring harness for interior lights (8) from evaporator unit (1) | ||
9 | Unscrew line from terminal stud for terminal 30 (2) | Model 903.66 (except 903.663) | |
10 | Remove bitumen insulation tape (9) over refrigerant lines | Installation: Wrap area around expansion valve, low-pressure switch and the evaporator pipe lines carefully with new bitumen insulation tape (9). | |
Insulation | |||
11 | Unscrew union nut (10) | ||
| Compressor oils (specification 362.0) | ||
Plug openings. | |||
Installation: Use new sealing ring. Coat sealing ring with compressor oil before installation. | |||
Model 903.66 (except 903.663) | |||
Record plug | |||
12 | Unscrew union nut (11) | ||
| Compressor oils (specification 362.0) | ||
Plug openings. | |||
Installation: Use new sealing ring. Coat sealing ring with compressor oil before installation. | |||
Model 903.66 (except 903.663) | |||
Record plug | |||
13 | Disconnect condensation hoses (6) on left and right side of evaporator unit (1) | ||
14 | Remove self-tapping screws (7) | ||
15 | Support, unscrew and remove evaporator unit (1) | Installation: Screw on ground line for terminal 31 (3). | |
Model 903.66 (except 903.663) | |||
16 | Install in the reverse order | Only attach trim of evaporator unit and condenser unit after filling and checking the air conditioning system. | |
17 | Replace air conditioning system filter dryer | ||
18 | Evacuate air conditioning system, refill it, and then check the system to make sure that it functions correctly and does not leak | ||
19 | Set time on instrument cluster | except code J19 (Automatic 1 day/2 driver tachograph (EU)) except code J28 (Tachograph 1 day/2 driver with additional recorder. 2-stage) | |
20 | Set time on timer for auxiliary heater | with code H12 (Hot-water auxiliary heater) or with code H86 (Analog clock for auxiliary heater) | |
21 | CODE RADIO |
Rear air conditioning |
Number | Designation | Model 903.6 (except 903.663/671/672/673) | |
BA83.50-N-1002-01B | Nut, refrigerant line connection to expansion valve | Nm | 35 |
Rear air conditioning |
Number | Designation | Model 903.6 (except 903.663/671/672/673) | |
BA83.50-N-1004-01B | Mounting bolt, evaporator unit to roof | Nm | 25 |
Rear air conditioning |
Number | Designation | Model 903.6 (except 903.663/671/672/673) | |
BA83.50-N-1017-01B | Line connection, intake-side refrigerant lines | Nm | 35 |
Rear air conditioning |
Number | Designation | Model 903.6 (except 903.663/671/672/673) | |
BA83.50-N-1021-01B | Nut, terminal 30 terminal stud | Nm | 20 |
129 589 00 91 00
Record plug
Referenced documents
- ah5410p000101a Notes on battery
- ah5410p000101a
- ah8330n000301a Notes on handling refrigerant R134a
- ah8330n000401a Procedure for a damaged or leaky air conditioning system
- ah8330n000501a Protect air conditioning circuit and components from moisture when carrying out repair work
- ar8330d1760b Draining, evacuating and refilling air conditioning, checking function and checking for leaks
- ar8350d5000a Remove/install condenser unit paneling
- ar8350d5010a Remove/install evaporator unit paneling
- ar8350d5090a Remove/install air conditioning dehydrator (roof equipment)
- as5410z000101a Risk of fire/risk of explosion due to short circuit and escaping oxyhydrogen gas. Risk of (burn) injury caused by caustic burns to eyes, skin and mucous membranes from battery electrolyte/mist, short circuit and arcing. Risk of
- as6500z000201a Risk of death caused by falling from vehicle roof. Risk of injury to other persons caused by falling objects during work in roof area.
- as8300z000101a 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.
- bb0040p036200a Compressor oils (specification 362.0)