Remove the pump from the engine and disconnect its housing from the cover. Secure the cover in a vice, remove the impeller from the shaft using puller A.40026 (Fig. 21) and hub 1 (Fig. 22) of the fan pulley using puller A.40005/1/5
Unscrew the locking screw 9 (see fig. 20), remove the bearing with the shaft and remove the seal from the cover using a regular mandrel.
(Information taken from the website: VAZBOOK.RU)
Then remove deposits from the impeller and housing, clean the parts. Check the axial play of the bearing with the shaft, especially if significant pump noise was noted. The axial play should not exceed 0.13 mm under a load of 5 kgf. Replace the seal with a new one during repair. Deformations and cracks on the housing and cover of the pump are not allowed.
Assemble the pump in the reverse order of disassembly. Do not allow skewing when installing in the gland cover. Press the bearing with the shaft into the cover so that the socket of the locking screw matches the hole in the pump body cover. After tightening the bearing locking screw, calk the contours of the screw so that it does not loosen.
Using the device A.60430 (Fig. 23), press the pulley hub onto the shaft, maintaining the size of (84.4±0.1) mm (see fig. 20), as well as the impeller, providing a gap of 0.9-1.3 mm.
When installing the pump on the engine, replace the gasket between the pump and the cylinder block.