First, press-fit connecting rod copper sets. Copper sets of oil hole or oil groove and the hole on the connecting rod to be aligned to ensure that the lubrication; the same time, After the copper sleeve presses in, its both ends protrudes the connecting rod end surface distance to be equal.

 

Second, the assembly piston ring and connecting rod. When assembling piston rings and connecting rods, pay attention to their relative position and direction. Connecting rod large end of the oblique incision, the piston at the top of the vortex groove, should be with the oblique incision on the same side of the upper end of the upper side of the oblique incision, The top of the piston has a convex tip, should be to the fuel pump side.

 

Third, Qiaozhuang piston pin. Piston pin and pin hole for the interference fit. Installation, the piston should first be placed in water or oil heated to 90 ℃ ~ 100 ℃, after removal, the rod on the piston pin hole between the holes in place, and then coated with oil piston pin installed according to the established direction Into the piston pin hole and link copper sleeve. At the same time, to push the edge of the piston pin, the activities of the connecting rod, with the thumb or palm into the pin hole and small head copper sleeve, and can move in them, then the two with the appropriate tightness. To make the piston pin face and the two piston pin retaining ring equal distance, install the retaining ring.

 

Fourth, the piston ring installation. When installing the piston ring, pay attention to the position and sequence of the rings. Piston on the first gas ring, usually chrome-plated ring. Second, the third ring is mostly torsion ring, but also a cone ring. In the case of an internal incision, the incision shall be towards the lower side; in the case of a conical ring, the side engraved with the word "up" or the angle of the cone shall face upward. The piston ring in the slot must not have the phenomenon of stagnation; the first air ring opening, can not be on the piston pin hole and the piston on the top of the whirlpool; adjacent ring opening position should be staggered 90 ~ 120 degrees, to prevent the cylinder Gas leakage, in order to facilitate sealing. After the piston ring is loaded, check its opening clearance (end clearance) and side clearance. The gap is too large, easy to cause leakage, the gap is too small, will have the phenomenon of stuck; edge gap is the piston ring and the groove in the gap on the height, it allows the ring in the ring groove free activities, This gap should not be too large, otherwise, when the piston moves up and down in the cylinder, the gas ring will produce pump oil, lubricating oil into the combustion chamber to speed up the consumption of lubricants and cause serious coke.

 

5, into the connecting rod group. Connecting rod assembly into the cylinder, the installation of connecting rod cover, should pay attention to the big end of the matching rod mark, while torque wrench torque required by 2 to 3 times to tighten the bolts, turning the crankshaft should be no jamming phenomenon, and finally install the lock Tight wire or fuse.