(1) Check whether the scratches and corrosion phenomenon plunger, when necessary, replacement of new products. (2) Check piston pair cope with the situation. The plunger tip insert the plunger comprising a tilt of about 60 °, if the plunger can slow the decline in its role as a good fit. (3) Check the tightness of piston pair. Hold the plunger sleeve, two fingers to block the plunger tip and the side of the inlet. With the other hand a ram, feel a greater suction, high pressure radial piston pump, loosen the plunger is retracted immediately situ, show piston secondary seal is good, or should be replaced piston pair. (4) Check the oil valve Deputy vacuum ring worn a step or injuries phenomenon, when necessary, be replaced. (5) check out the situation with the deputy of the valve. Use your fingers to block the valve under the hole, with the other fingers to gently press down the valve when the valve finger from the upper end of time, it can automatically play back in place, indicating that the valve secondary seal is good, Hebei radial piston pump, or should replace the oil valve deputy. (6) Check tappet. Standard gap between the fuel pump body and the tappet is 0 ~ 0.03mm, three rows of radial piston pump, such as more than 0.2mm, replace the parts. (7) Check the plunger flange and gap control sleeve between the grooves, should be 0.02 ~ 0.08mm, such as more than 0.12mm, you must replace the control sleeve piston reciprocating plunger stroke L is always constant, the decision by the cam lift. Plunger fuel supply amount per cycle depends on the size of the fuel supply stroke, stroke oil from camshaft is variable. Oil supply start time does not change with the stroke change. Rotation of the plunger end time can change the oil, thereby changing the amount of oil. When the piston pump work, the fuel injection pump plunger spring action of the cam on the camshaft, the force on the plunger and lower reciprocating motion, thus completing the task of pumping, pumping process can be divided into three stages. Electric radial piston pumps, radial piston pump Hebei, Lu Lu Hydraulic power is provided by hydraulic machinery plant in Texas. Texas Lu force hydraulic machinery plant (www.luliyeya.com) strong, credible, in Dezhou hydraulic machinery and components industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Lu Hydraulic and you hand into the brilliant, for a better future!