Fig. 468. The pump of a cooling liquid: 1 — a bolt, 20 Н·м; 2 — the pump of a cooling liquid; 3 — a bolt, 10 Н·м; 4 — a bolt, 10 Н·м; 5 — the gauge of temperature of a cooling liquid, 7 Н·м; 6 — the thermostat; 7 — a bolt, 10 Н·м; A — it is attached to a head of the block of cylinders; B — to the heat exchanger; C — to a heater radiator; D — from a radiator

The thermostat operates redistribution of streams of a cooling liquid in system of cooling of the engine. The thermostat is located in the case of the water pump under a cover which has a sealing ring (see fig. 468).

Order of removal of the thermostat (works are spent on the cold engine):

- Merge cooling liquid from cooling system;

- Disconnect bringing hose;

- Uncover the thermostat;

- Remove the thermostat with a sealing ring.

The note For convenience of access to the thermostat lift a forward part of the car and establish it on support.

The thermostat is not subject to repair, therefore in case of malfunction replace it. Simple check of working capacity of the thermostat is spent as follows:

Fig. 192. Check of working capacity of the thermostat

- Suspend the thermostat on a wire and lower it in a vessel with cold water (fig. 192 see);