2.4.2. Centrifugal pump of the cooling system

Fig. 2.174. Components of the centrifugal pump of cooling liquid



Removal
Merge cooling liquid and disconnect a connecting hose of the bringing cooling system pipe from the pump of cooling liquid.
Take off a belt of the drive of the generator and a pulley of the pump of cooling liquid.
Uncover a belt of the GRM drive and the directing GRM drive belt roller.
Turn off bolts of fastening of the pump of cooling liquid, then remove an adjusting level of the generator.
Remove the pump of cooling liquid assembled from the block of cylinders.

Check
Check each detail for lack of cracks, damage or wear, and replace the pump of cooling liquid assembled if it is necessary.
Check the bearing for lack of damage, the increased noise during the work and slow rotation, and replace the pump of cooling liquid assembled if it is necessary.

Fig. 2.175. Check of the pump of cooling liquid


Check the pump for existence of leak of liquid. Leaks through an opening "With" (fig. 2.175) indicate leakage of consolidations of a shaft of the pump. In the presence of leaks replace the pump.

Installation
Clear the surfaces of interface of the water pump and the block of cylinders.
Establish covers of the drive of the gas-distributing mechanism.
Establish a pulley of the water pump and a belt of the drive, adjust a drive belt tension.
Fill in cooling liquid in system.
Start the engine and be convinced of lack of leak of liquid.

Fig. 2.176. Bolts of fastening of the pump of cooling liquid


Install the water pump with new laying and tighten fastening bolts the specified moment (fig. 2.176).
The moment of an inhaling of bolts of fastening of the water pump to the block of cylinders:
engines with a working volume of 1,6 l – bolts "And" 12–15 N · m, bolts "In" 20–27 N · m;
engines with a working volume of 1,8 l – 20–27 N · m.
(length of a bolt of 28 mm)