Which diesel engine parts most likely to "wrong" or "backward", these ten must remember!
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Some parts on the diesel engine can be installed on both sides, have a plenty of no positioning parts, if slightly careless or wrong easily. As a result, small make up here specially to ask, in the repair or replacement parts, diesel engine should be taken into consideration seriously.
1、Cylinder cushion
Assembly, there are edge side should be toward the cylinder cover; If installed backwards, can cause leakage, burning in cylinder pad, affect the service life.
2、The piston groove
The top of the piston at the top of the u-shaped groove or peach shape towards pointed side should be above; If put wrong, does not favor the fuel and air mixing, has not yet been burning fuel does not produce secondary vortex motion and incomplete combustion, the diesel engine can not work properly. After starting or starting
3、Connecting rod and piston
Connecting rod and the piston assembly: should make connecting rod small end oil hole and the top of the piston at the top of the u-shaped groove or peach shape, pointed toward the above on the same side; Otherwise, cause the connecting rod small end bushing and piston pin does not form a dry friction lubrication, resulting in connecting rod and piston wear and tear.
4、Connecting rod
Connecting rod of the upper and lower tiles: if new replacement bearing shell, are neck and neck; If after using the bearing bush, according to its original position refitted, should not be upper and lower transposition, otherwise it will affect the shaft and bearing bush cooperation relationship.
5、Connecting rod and connecting rod
Connecting rod cover with the combination of the connecting rod, connecting rod big end and the connecting rod on the back cover has the assembly mark, combined, should be marked on one side. Otherwise, cannot guarantee the big aperture the machining precision of the original, also can destroy the tile with the correct shaft.
6、Fuel injector clamp
Fuel injector plate side is flat, the other side for the circular arc surface. When installation should make arc surface toward the injector body, to ensure that the center when the fuel injector is compact and not skewed, otherwise easy to make the installation hole of the leak outward.
7、Oil seal
All of the oil seal, such as the crankshaft oil seal, starting shaft oil seal, etc., should be made with the spring side toward the body. If installed backwards, inside the crankcase untight seal, oil leakage.
8、Plunger sleeve
In the fuel injection pump plunger sleeve: should make plunger with crescent-shaped hole and pump plunger sleeve positioning screw hole on the shell side, to ensure that the positioning screw end screw into the crescent slot to rotate the plunger can't. If put wrong installation (i.e. turned 180 degrees), has the potential to positioning screw the oil return hole closed, oil supply runaway speed.
9、Small washer on the fuel injection pump
Two small washer on the fuel injection pump, plunger sleeve positioning screw washer is copper gaskets, and the lifter guide screw washer is spring washer, both are not interchangeable or wrong; Otherwise, can lead to diesel fuel injection pump cavity into the oil pan or leakage to the outside.
10、Gear chamber cover on the respirator
Installing a respirator reed among components, should make reed outward, in order to keep the foreign only breathe out breathe without breathing apparatus.
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