1. Remove plug 6 and connect an oil pressure gauge (see illustration Pressure test).
2. Check up size of pressure in the regulator on the speeds of movement of the car specified in the table.
3. If there is no pressure, remove and thoroughly clean the centrifugal regulator.
4. If the pressure in the centrifugal regulator does not correspond to the norm when the car is moving at the indicated speeds, then the regulator must be replaced.