Note. Separate characteristics are also given in the text of the Chapter and, if they are mandatory, are highlighted in bold.
Construction | Thermosyphon with a vane water pump. Thermostatic adjustment. With separate expansion tank. Electrically driven fan, switched on and off by a two-stage thermal switch |
Coolant | A mixture of soft water and antifreeze (1:1), with this composition, frost resistance is provided up to -35°С |
Antifreeze | MB № Q1 03 0002 |
System volume, l | 12 l |
Coolant composition: | |
The proportion of antifreeze in the coolant to ensure frost resistance | |
| 50% |
| 55% |
System pressure | About 1.2 bar (the exact value is indicated on the cap of the expansion tank). The lid must withstand pressure for two minutes. |
Thermostat | |
Valve travel | not less than 7 mm |
| |
| 82° |
| 96° |
| |
| 92° |
| 99° |
| |
| 87° |
| 102° |
Fan thermal switch | |
1st stage on/off | 92-97/84-91°C |
2nd stage on/off | 99-105/91-98°С |
A/C refrigerant | |
Type | R134a (do not use R12) |
Volume, gr. | ± 15 |
Refrigerant oil | |
Type | PAG |
Volume, cm3 | 200 |
Tightening torque of threaded connections, H•m | |
Fastener tightening torques are given in the text of the Chapter and in some illustrations*. | |
*The tightening torques in bold type are subject to exact observance; Efforts not in bold are indicative only |