Fuel injection pumps 4063968 101405-3350 Wide Range of Use

The quality of the fuel injection pump assembly plays a decisive role in the ease of calibration and adjustment. Failures and reworks found during calibration are mostly due to poor assembly quality. Therefore, the assembly process should be careful and meticulous, repeated checks, do not leave the faults found in the calibration to eliminate.This post will introduce you to the Fuel injection pumps 4063968 101405-3350 disassembly and reassembly process.

1.disassembly and assembly of special tools

In the decomposition and assembly before, to clean up, prepare the required tools, especially special tools. In the process of disassembly and assembly must use open-end wrenches, plum wrenches, socket wrenches and a variety of special tools, as far as possible, do not use active wrenches and other universal tools. Especially for the tight fit parts, special tools should be used as much as possible, and hammers, chisels and other tools that can easily damage the parts should not be used.

2.Precautions and points for disassembly

(1) The disassembled parts should be discharged in an orderly manner according to the parts so that they can be assembled according to the number during installation.

(2) The fuel injection pump should be disassembled on a special fixture to avoid deformation of the casing. If disintegration is done in a vise, software such as copper sheets must be added to the jaw parts to avoid damaging the parts. Clamping parts shall not be on the mating surface or mounting surface.

(3) Parts, tools, and bench should be kept neat and clean at all times.

(4) Plunger and plunger sleeve, outlet valve and valve seat and other precision coupling parts, in the process of disassembly, cleaning and storage should be very careful, can not collision, not to mention interchangeable, should be stored in pairs in clean diesel fuel.

(5) Before disassembling the fuel injection pump, the surface should be cleaned with gasoline, kerosene or diesel fuel, and it should be noted that alkaline water cannot be used for cleaning.

(6) Some parts requiring unchanged assembly position, such as gear lever, manipulator arm, adjustment screw, should remember the original assembly position by marking when disassembling to facilitate correct assembly.

3.Assembly precautions and points

(1) The whole assembly process must be kept highly clean. There should be no dust and smoke in the surrounding air, and the workbench, parts, tools, and assembler's hands must be clean.

(2) When assembling, all kinds of gaskets, oil seals, etc. are replaced with new ones.

(3) Should be strictly in accordance with the assembly process order and technical standards, and the use of instruments and gauges to check each item. The order of assembly, generally should be carried out in accordance with the decomposition of the opposite steps, there are many precautions and decomposition of the same.

4.Basic operation points of assembly

(1) The plunger and the plunger sleeve are matched in sets and cannot be exchanged. Before installing the fuel injection pump body, you should check whether their models are in line with the installed fuel injection pump. The plunger sleeve of the same height of the adjusting roller drive part can have different plunger diameters. If the plunger diameter is installed wrongly, it is impossible to reach the normal fuel supply.

(2)When loading the plunger, it should be carefully and accurately, and should not be loaded wrongly. After loading, it should be able to move freely up, down, left and right. In the toothed rod control mechanism of the fuel injection pump, the lower end of the plunger tongue in both directions can be loaded into the control sleeve straight cut groove, the general manufacturer in the lower end of the plunger tongue marked, loaded when the mark should be facing up.

(3) When the hole on the pump body is deformed or has a burr, and the plunger set does not fit, the hole should be reamed with a reamer so that the plunger set can be fitted slightly loosely to fit.

(4) When installing the camshaft, the direction of rotation of the fuel injection pump and the sequence of injection should be clarified before installing into the pump body, and it is not allowed to install the reverse. The oil seals at both ends should seal the lubricating oil inside the pump body and should not be installed wrongly. After installing both sides of the bearing seat, the camshaft rotation should be flexible, the axial clearance should meet the specification requirements, if not suitable for the available increase or decrease in shims to adjust.

(5) After overhauling and reassembling the roller drive parts, after installing into the pump body, the camshaft of L-J Dusty Blade L should move freely up and down flexibly, and should not be stagnant. The adjusting screw should be adjusted beforehand, not too high, otherwise it will be in the subsequent assembly, fastening process, the plunger and other parts of the extrusion.

(6) When installing the plunger spring, the upper and lower plunger spring seats should not be installed in reverse, otherwise the fuel injection pump will be partially stuck. When loading the upper spring seat, check whether there is axial clearance in the adjusting ring. If the adjusting ring is dead, it means that the spring seat hole is worn out, and the corresponding spring seat should be reapplied or a circular liner should be added on the top of the spring seat to ensure that the adjusting ring rotates flexibly. The steel wire retaining ring of the lower spring seat should be effectively installed into the groove, and there should be no skew phenomenon.

These are some of the things to consider when installing Fuel injection pumps4063968 101405-3350.If you would like more expertise on fuel injection pumps, feel free to contact us at Keluo Construction Machinery for a durable, reliable, and easy-to-install fuel injection pump.