3.10. Check of a condition of components

Every year

The wide range of engine failures is connected with violation of functioning of the cooling system. On the models equipped with AT, this system provides also ATF cooling, supporting by that optimum conditions for work of transmission.

Check of a condition of components of the cooling system has to be made after full cooling of the power unit (not less than in three hours after an engine stop).


  1. Uncover a broad tank. The cooling liquid which is in system has to be rather transparent. If liquid is painted in color of a rust, the system has to be washed out and filled with fresh mix (see the Head of the Cooling system of the engine, heating of salon and air conditioning). If the level of liquid does not reach top, add in a radiator a little more mix of the required structure (see the Section of Check of levels of liquids).
  2. Attentively examine the top and lower radiator hoses together with the hoses of system of heating of salon having smaller diameter and located between the power unit and a partition of a motive compartment. Check hoses on all their length and in case of identification of cracks, swellings and signs of aging of material you make replacement of defective components. It is usually simpler to make out small cracks when tightening a hose

Examples of typical defects of radiator hoses


Check hoses for existence of the wiped sites.




The softening of rubber testifies to the beginning of its destruction as a result of aging.




Too hard tightening of a collar for the purpose of more reliable fixing on an union/branch pipe of the hardened hose does not promote the leak termination, and only leads to hose material destruction.





Check all hoses for existence of swellings and traces of infiltration of oil at end faces. Cracks and small breaks in rubber come to light when tightening a hose easier

Authors of the present manual recommend to make replacement of hoses approximately time in two years regardless of their state.

  1. Check reliability of fastening of all hoses on the unions / branch pipes. Leak of cooling liquid is usually shown in the form of potek of rusty or white color on the surfaces surrounding their source. If hoses are fixed on unions/branch pipes by collars of the twisted type, the last will be reasonable to be replaced more reliable worm or screw.
  2. Having blown compressed air, or by means of a soft brush, remove from gaps between radiator heat exchanger plates old leaves, remains of insects and other garbage. Try not to damage soft plates of the heat exchanger and not to cut fingers about their keen edges.