At each replacement of oil of the engine check liquid level in a tank of the hydraulic booster (fig. 1.52)
. Level of liquid is measured by the probe located on a tank cover on its party with inscription "NOTES" at a temperature of liquid of 50 — 80 °C or on the party with the inscription "COLD" at a temperature of 0 — 30 °C. At decrease in level of liquid to a tag of "MIN" urgently check serviceability of the hydraulic booster.