Model | NMB613.455 with engine 446.938 |
with code HKB (Konvekta ACX 641 SAPTCO air conditioning without roof heater) | |
except code HA4 (Konvekta air conditioning with roof heater and timer) | |
Model | NMB613.455 with engine 446.938 |
with code HKE (Konvekta ACX 642 air conditioning with roof heater) | |
except code HA4 (Konvekta air conditioning with roof heater and timer) |
T83.55-0017-09
Shown on model 613.455 with code HKB (Konvekta ACX 641 SAPTCO A/C without roof heater) |
1 | Refrigerant compressor | 4 | Intake-side testing and filling valve | 8 | Drain screw | ||
2 | Pressure side shutoff valve | 5 | Intake side shutoff valve | 10 | Filling screw | ||
3 | Pressure-side testing and filling valve | 7 | Intake side shutoff valve |
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 | ||
Notes on handling refrigerant R134a | |||
1 | Open right rear side flap | ||
2 | Connect A/C suction and recycling equipment to pressure-side testing and filling valve (3) and intake-side testing and filling valve (4) | Observe operating instructions for air conditioning system vacuum and recycling unit. | |
3 | Remove protective cap over pressure-side shutoff valve (2) and protective caps over intake-side shutoff valves (5, 7) | ||
4 | Screw in pressure-side shutoff valve (2) and intake-side shutoff valves (5, 7) completely | By screwing in the pressure side shutoff valve (2) and the intake side shutoff valve (5), the pressure side test and filling valve (3) and the intake side test and filling valve (4) are opened. | |
5 | Extract refrigerant from refrigerant compressor (1) using A/C suction and recycling equipment for at least 30 minutes | Note the following: | |
6 | Open liftgate | ||
7 | Remove filling screw (10) | ||
8 | Extract oil from refrigerant compressor (1) | Clean extraction hose of engine oil extractor externally before inserting it. | |
9 | Remove drain screw (8) | Drain remaining oil completely out of refrigerant compressor (1) and collect using suitable means. | |
10 | Screw in drain screw (8) | Replace seal. | |
Bolt, refrigerant compressor oil drain | |||
Torque wrench | |||
11 | Pour prescribed amount of oil into refrigerant compressor (1) | ||
| Compressor oils (specification 362.0) | ||
| |||
The oil for the refrigerant compressor (1) is hygroscopic (moisture absorbing). Immediately close the oil reservoir tightly and pour the measured quantity of oil into the refrigerant compressor (1) immediately. | |||
Total filling capacity - compressor oil for refrigerant compressor | |||
12 | Screw in filling screw (10) | Replace seal. | |
Bolt, refrigerant compressor oil replenishment | |||
Torque wrench | |||
13 | Evacuate refrigerant compressor (1) using A/C suction and recycling equipment | Evacuate refrigerant compressor (1) to maximum achievable vacuum, but for at least 30 minutes. | |
14 | Unscrew pressure-side shutoff valve (2) by 3 to 5 turns | ||
15 | Pour extracted quantity of refrigerant into system via pressure-side testing and filling valve (3) | Only the quantity that was noted after extraction. | |
16 | Close valve of A/C suction and recycling equipment | ||
17 | Unscrew pressure-side shutoff valve (2) and intake-side shutoff valves (5, 7) completely | Unscrewing the pressure-side shutoff valve (2) and the intake-side shutoff valve (5) closes the pressure-side testing and filling valve (3) and the intake-side testing and filling valve (4). | |
18 | Attach protective cap over pressure-side shutoff valve (2) and protective caps over intake-side shutoff valves (5, 7) | ||
19 | Remove A/C suction and recycling equipment | ||
20 | Close liftgate and right rear side flap |
001 589 67 21 00
Torque wrench