Mercedes C-Class

Leakage in system of cooling and functioning of a safety valve in a cover can be checked by means of the measuring device available on sale. The following HAZET tools for this purpose approach: the manual pump 4800-1 with a hose 4800-2 and a nozzle 4800-15.

If sealing laying of a head of cylinders was replaced, before check warm up the engine to working temperature and let's to it be cooled. Tightness of laying of a head of cylinders is thus provided. At the hot engine before opening of a broad tank cover it with a thick rag to exclude a burn owing to influence of hot cooling liquid and steam. The cover should be removed only at temperature of cooling liquid below + 90°С.

1. Turn on Ѕ a turn to the left a cover on a broad tank and dump pressure in cooling system. Then turn a cover further and remove it completely.
2. Establish the heater switch in salon on the maximum capacity.
3. Check level of cooling liquid, if necessary add liquid, address to appropriate section.

4. Establish the device for check on the union for filling with liquid. By means of the pump of the device create pressure about 1.4 atm. If pressure falls, define a place of leak and eliminate a leakage. the illustration has informative character and cannot correspond to considered model completely.

5. If pressure falls, and leakage of liquid is not present, the reason can be in internal leaks, for example, owing to damage of sealing laying of a head of cylinders or owing to crack existence in the case.

The safety valve is located in a cover of a broad tank. Its task consists in opening of system of cooling and liquid plum at achievement of a certain pressure.

1. Screw a cover (2) on the device for control (1). the illustration has informative character and cannot correspond to considered model completely.

2. Create the necessary pressure specified in Specifications. The safety valve opens in two steps. The vacuum valve opens at depression creation.

On a cover pressure of opening of the valve is given in atm. x 100. If, for example, on a cover costs «140/200», it is a question of a two-level cover and pressure of opening of the valve makes 1.4 and 2.0 atm.