pneumatic oil pump auto maintenance tool

pneumatic oil pump TGR37155-SOperations Guide: 1) Put the oil pump inlet into the tanks, and fix the pump by retaining nut. 2) Connect the compressed air. This time, adjust the pressure regulator to display in 0.6-0.8Mpa. 3) Set the reading to zero through press the clear button on the electronic flow meter. 4) Open ball valve of pump and press the handle of refueling gun to start working while aligned oiling port. 5) Close ball valve of pump and release the handle of