1 - radiator; 2 - temperature sensor; 3, 17, 20, 22 - hose; 5 - bolt (М6х25); 6 - thermostat in the housing; 7 - gasket; 3 - block head; 9, 13 - ring (20x3); 10 - heating hose; 11 - nut (M6); 12, 15, 16 - bolt; 14 - pipeline; 18 - heating pump; 19 - holder; 21 - air removal screw; 23 - timing cover; 24 - ring (68x5); 25 - engine pump; 26 - pulley; 27 - bolt (M6x16); 28 - nut (M6); 29 - expansion tank; 30 - tank cap
Replacement of the pump of a cooling liquid is necessary for carrying out in a following order. Remove the alternator drive belt and drain the coolant and dispose of it. Remove radiator and thermostat housing. Remove the viscous fan impeller.
Loosen the pulley bolts (27, 4 pieces, see fig. 3.17), while keeping it from turning by squeezing the belt. Remove pulley (26) from pump hub (25) coolant.
Remove four screws (arrows, fig. 3.140) coolant pump mounts.
Screw in two screws «M6» in holes (1) in the pump housing, located diametrically opposite and evenly press the pump from the engine timing block cover. Make sure that there is no distortion of the pump.
When installing the pump, replace the O-ring (24, see fig. 3.17) steep section (68x5) and the pump gasket, applying coolant to the ring as a lubricant for easier sliding.
Make sure that the alignment bushings are in the correct position. bolts («M6») fasten the thermostat housing to tighten with a torque of 1.0 kgf·m (10 Nm). bolts («M8») fasten the pump on the cover of the timing block to tighten with a torque of 2.0 kgf·m (20 Nm). four bolts («M6») tighten the pulley fasteners with a torque of 1.0 kgf·m (10 Nm). Install drain plug (M14x1.5), replacing the sealing ring, and tighten it with a torque of 25 Nm (2.5 kgf·m).
Fill the system with coolant, remove air, start the engine, warm it up and check the system for leaks. Check coolant level and top up if necessary.