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The assembly of pistons and rods
For the assembly of pistons and rods, do the following: - When replacing the piston to make sure that all the pistons are of the same type; - Pistons heated to a temperature of 60 ?° C (put in hot water). Choose a mandrel of suitable size, which can be inserted into the piston pin; - To strengthen the hands lubricated finger inserted into the heated piston and connecting rod. Fig. 71 shows how to hold a finger. You must first be installed on one side of the thrust ring to be able to firmly press your finger to it;
| Fig. 71. Install the piston pin
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- The assembly of pistons and rods required to comply with the following recommendations: 1) The arrow on the piston crown (hand-drawn or embossed from the new pistons) should be towards the front of the engine (see. Fig. 58);
| Fig. 58. Marking the piston head before removing pistons and rods
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| Fig. 60. Connecting rod bearing
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2) the tides on the connecting rod and the bearing caps (see. Fig. 60) must be turned in the direction of the crankshaft pulley; 3) designate numbers of cylinders (see. Fig. 59) on the connecting rod and bearing cap should be consistent with each other;
| Fig. 59. Marking of the bearing caps and connecting rods before their removal
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- Set on the other side of the piston second snap ring and ensure the reliability of its landing; - Check that the piston after the assembly was free to bend in different directions; - Set using forceps to mount piston rings, piston ring grooves (see. Fig. 63). Compression piston rings can be confused so before installing pay attention to their cross-section. In addition, these rings have on one side the designation ?«Top?» or ?«Oben?», after installation of the ring is to be seen from the bottom side of the piston.
| Fig. 63. Removing the piston ring by means of special grippers intended for mounting
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