Diesel engine which parts most likely to "install the wrong" or "anti-installed", these ten must remember!

Some parts of the diesel engine can be installed both positive and negative, some non-positioning parts, if a little sloppy easy to install anti-installed or wrong. Therefore, Xiaobian here deliberately put forward in the repair of diesel engines or replacement parts, should pay attention.

1, the cylinder pad

Assembly, there is a side of the cylinder head should be facing the cylinder; if installed, will cause leakage, burning cylinder pad, affecting its service life.

2, the piston groove

The horseshoe-shaped groove at the top of the piston or the tip of the peach tip on the top should face upwards; if it is mounted against the mixture of fuel and air, the unburned fuel can not produce the secondary eddy motion and the combustion is incompletely caused the diesel engine can not start or After starting can not work properly.

3, connecting rod and piston

Rod and piston assembly: the small end of the connecting rod should be the oil hole and the top of the piston horseshoe groove or the top of the peach-shaped tip on the same side toward the top; otherwise, leading to small rod and piston pin pin can not be lubricated to form dry friction , Resulting in wear of the connecting rod and the piston.

4, connecting rod tile

If the bearing pad after use, according to the original location of the complex, should not be on, under the transposition, or it will affect the journal and the bearing pad (bushings), if the replacement of the bearing, With the relationship.

5, connecting rod cover and connecting rod

Combination of connecting rod cover and connecting rod: The connecting rod big end and the connecting rod cover have the assembly mark on the back, when the combination, should make mark on the same side. Otherwise, can not guarantee the large diameter of the original connecting rod machining accuracy, but also damage the tile with the correct axis.

6, fuel injector plate

Fuel injector plate side is flat, the other side of the arc surface. Installation should make the arc face toward the injector body, to ensure that the injector is pressed when the center without deflection, or easy to install the hole out of the hole.

7, oil seal

All oil seals, such as crankshaft oil seal, starting shaft oil seal, etc., should be made with self-tightening spring side of the body toward the body. If installed anti-crankcase sealed lax, so that oil leakage.

8, plunger sets

Pump plunger in the package: the plunger should be crescent-shaped hole with the pump casing on the set of bolt holes in the side of the set screw holes to ensure that the screw into the crescent-shaped slot-shaped slot, the plunger can not . If the anti-mounted (that is, turned 180 degrees installed), it is possible to set the screw back to the oil hole blocked, fuel supply caused by speed control.

9, a small gasket on the fuel pump

Two small gaskets on the fuel pump: the gasket on the plunger sleeve set screw is a copper gasket, and the washer on the tappet guide screw is a spring washer that can not be swapped or misplaced; otherwise, the fuel injection pump chamber Of the diesel oil leaked into the oil pan or leak to the outside.

10, the gear chamber cover breathing apparatus

When installing the ventilator intermediate reed assembly, ensure that the ventilator exhales only without drawing air.