On the press-priming pump glitch solutions offer HD press

Do not press the pump suction. Dirt clogging grease filter press is likely to cause the hydraulic pump does not suction, washable grease filter should be; if the oil used for a long time, sediment deposited on the inlet valve, which results in the valve not close together, should be replaced with new oil or release the old oil filter and clean the inlet valve; if due to lack of fuel tank caused the tank to add a little oil can; if unpaired vacuum pumps, can pull out the small piston, and then injected into the fluid pressure. Pump pressure insufficient. If there is dirt or valve seal bad, after grinding to a removable cast to adhesion; if press inlet valve plug and seat is bad, but also to be washable after grinding to adhesion; if pressed between the oil out of the oil drain plug and seat aircraft is bad or screwed tight oil spills caused by oil can grind press progress stuffy plug and seat, making adhesion or tighten the drain plug; if the small piston and pump wear After along gap is too large, it should be replaced with new pumps. Website: www.gyhuada.com