T83.55-0016-09
Shown on model 671.015 |
1 | Refrigerant compressor | 3 | Intake side shutoff valve | 5 | Inspection glass | ||
2 | Pressure side shutoff valve | 4 | Filling screw | 6 | Drain screw |
| Check | ||
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 | ||
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. | |
1 | Run engine and switch on air conditioning | ||
2 | Switch off air conditioning and engine after 10 minutes | ||
3 | After 5 min waiting time, check oil level at refrigerant compressor (1) through inspection glass (5) | The oil level is correct if the oil level in the inspection glass (5) is in the upper area. If the oil level is too low, check the refrigerant compressor (1) for external leakage, and correct oil level if necessary. To do so, perform steps 4 to 18 subject to separate repair order. | |
Correct oil level | |||
4 | Connect pressure and suction line of air conditioning vacuum and recycling unit to pressure side test and filling valve and to intake side test and filling valve | Observe operating instructions for air conditioning system vacuum and recycling unit. | |
5 | Unscrew cover cap over pressure side shutoff valve (2) and intake side shutoff valve (3) | ||
6 | Screw in intake side shutoff valve (3) up to end stop | ||
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. | |
7 | Start engine and switch on air conditioning | This pushes the remaining refrigerant into the air conditioning system via the open pressure side. | |
8 | Switch off engine when the shutoff pressure of 25.5 0.5 bar is reached | Observe manometer of air conditioning vacuum and recycling unit. | |
9 | Screw in pressure side shutoff valve (2) up to end stop | ||
10 | Suction off remaining refrigerant from refrigerant compressor (1) via intake side only | Slowly open shutoff valve on intake side manometer of air conditioning vacuum and recycling unit. | |
11 | After draining the refrigerant compressor, close shutoff valve on intake side manometer of air conditioning vacuum and recycling unit | ||
12 | Remove filling screw (4) | ||
13 | Pour in missing quantity of oil for refrigerant compressor | ||
| Compressor oils (specification 362.0) | ||
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The oil for the refrigerant compressor is hygroscopic. Immediately seal oil container tightly and immediately pour the measured oil filling capacity into the refrigerant compressor. | |||
14 | Screw in filling screw (4) with new seal. | Bolt, refrigerant compressor oil replenishment | |
15 | Evacuate refrigerant compressor (1) via intake side | Open shutoff valve on intake side manometer of air conditioning vacuum and recycling unit. | |
16 | After evacuation, close shutoff valve on intake side manometer of air conditioning vacuum and recycling unit | Observe operating instructions for air conditioning system vacuum and recycling unit. | |
17 | Open shutoff valve on pressure side manometer and pour in refrigerant via pressure side test and filling valve | Only add the noted-down quantity of extracted refrigerant. | |
18 | Unscrew pressure side shutoff valve (2) and intake side shutoff valve (3) up to end stop | ||
19 | Fasten cover cap over pressure side shutoff valve (2) and intake side shutoff valve (3) | ||
20 | Remove pressure and suction line of air conditioning vacuum and recycling unit |