2. Unscrew the plug and remove the pressure reducing valve parts.
3. Clean the parts.
4. Insert the gears so that the marks on them face the pump and check all the clearances specified in the Technical Data (photo).
5. If the clearances are not within the norm, replace the pump.
6. Check the condition of the pressure reducing valve, replace if necessary.
15.1 Oil pump parts
1. Shaft; 2.4 - Gasket; 3. Body; 5. Gears (leading and led); 6. Lid; 7. Plug; 8. Washer; 9. Spring; 10. Valve; 11. Pressure reducing valve
15.4 Checking the clearance in the gear engagement (1), the clearance between the driven gear and the pump housing (2), axial play (3) and deformation of the housing plane (4)