The use of diesel fuel pump maintenance considerations

1 , pump installation, to check the models, specifications are correct and clear anti-rust oil , the choice of gasket thickness should be appropriate to prevent excessive or too thick book the piston top dead or run in place , tighten the bolt tightening torque to evenly and prevent damage to the pump .
2 , pump the hand pump hand pump body between the piston and the rubber sealing device , do not arbitrarily dismantled, rubber Wai damage must be promptly replaced .
3 , within the coarse filter pump connector core vulnerable to dirt and clogged lint , etc. ,truck security seals should always check the cleaning, the filter damage must be promptly repaired or replaced .
4 , hand pump must be pushed back after use , the button tightened to prevent the hand pump and gasket or valve and the valve seat is not tight due to pressure caused by the intake or leaking.
5, to ensure plunger pump " four spring " flexible normal . "Four spring " for the piston spring , tappet ( wheel ) spring , inlet valve springs , delivery valve springs, elastic weakened or broken should be replaced or padded adjustments.
6, some pump casing has opened a vent hole , the hole is the role of a small amount of leakage pump diesel directly into the pump body. Holes shall not be blocked to prevent dilution of diesel into the fuel pump sump lubrication .
7 , to ensure that the entire gasket intact , plastic washers disassembly number should not be too much , and should be replaced periodically.
8 , found that diesel fuel injection pump sump too much , you should promptly check the pump piston and pump, tappet and tappet cover gap is too large, too large to be in time to prevent serious leakage due to diesel fuel , fuel pump and adjust the poor lubrication inside the mechanical speed .
9 , add diesel to be filtered through the sediment ,cable tie markers to ensure clean , and prevent excessive impurities exacerbated pump inlet valve , the oil valve seat wear , and sometimes even by impurities valve paving and failure.
10 , prolonged shutdown, preventing the pump mating surfaces , especially with the pump piston , tappet and tappet suite of water in the oil due to corrosion, rust measures must be taken ( downtime , replacement fuel pump sump inside with moisture , diesel oil and other impurities ) .