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The assembly of pistons and rods
| Fig. 54. The piston and connecting rod after dismantling: 1 - the piston rings; 2 - a lock ring of the piston pin; 3 - the piston; 4 - piston pin; 5 - rod; 6 - the bearing sleeve in the top head of a rod; 7 - bolts connecting rod bearing cap; 8 - insert the upper connecting rod bearing; 9 - the lower connecting rod bearing liner; 10 - a cover of the connecting rod bearing
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In Fig. 54 shows the individual parts of the piston and connecting rod. At their assembly and installation, proceed as follows: - Before assembly carefully inspect the surface of the piston (in the event that set new pistons). Check diameters, size groups and the last two digits of the spare parts, which must be indicated on the pistons and meet the installation requirements; - The replacement of rods to pay attention to the lower part of the bearing caps, which can be one or two stake the point labels that define the dimension of the group of bearings;
| Fig. 63. The piston and connecting rod assembly
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- Lubricate the piston pin and drive it into the hole bosses of the piston rod and bushings suitable for the diameter of the mandrel. Have both sides of the piston pin retaining rings, making sure that they are well got into his groove. Set piston with a rod in the engine must be such that the arrow 1 (Fig. 63) on the piston bottom point to the front of the engine, and directing onto the connecting rod bearing inserts 2 are arranged on the left side of the engine; - To make sure that after the piston assembly freely rotates in both directions to the piston pin;
| Fig. 64. Piston rings in a cut: 1 - composite oil ring with the expander (working surface chrome plating); 2 - lower compression ring with a cross section in the form of a trapezoid; 3 - upper compression ring of square section (contact surface asymmetrically refinished and chrome)
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- With the help of pliers to install the piston rings on the piston rings, paying particular attention to the correct sequence of their installation. Compression rings can be easily mixed up, so pay attention to their section and the location of the piston. In Fig. 64 shows the cross section of the rings and their order.
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