1. Remove the engine oil pan (see Section Removal and installation of the oil pan).
2. Remove the protective casing of the oil pump sprocket, for which, depending on the version, unscrew the bolts of its fastening, or release the casing from the clamps.
3. Give a nut and remove an asterisk with a chain.
4. Turn out bolts of fastening of the pump and remove it.
5. If necessary, squeeze the snap ring and remove the relief valve.
6. Installation is carried out in the reverse order. Adjust chain tension to A = 10±2 mm, by turning the threaded bushing in the oil pump with a wrench.