2.2.21. Dismantling and assembly of pistons, piston rings, rods and cylinders
Using a dilator of piston rings, remove two compression rings (top and the second) and an oil scraper ring from the piston.
Take out a piston finger from a rod.
|Fig. 2.132. Removal of lock rings of a piston finger
Vypressuyte piston finger.
Check conrod bolts for deformation existence.
If the conrod bolt is deformed, use a new rod.
|Fig. 2.134. Installation of a piston finger, rod and lock ring
Establish a piston finger in openings of the piston 1 and a rod of 2 (fig. 2.134)
Oil engine a piston finger and openings under a piston finger in the piston and a rod.
To install a piston finger in the piston and a rod.
Establish lock rings of a piston finger 3.
The lock ring has to be established as it is shown in the figure 2.134. Establish a lock ring so that the gap in a ring was in the range specified by an arrow.
Install piston rings on the piston.
|Fig. 2.135. Scheme of installation of piston rings
As shown in the drawing tags of "T", respectively have the 2.135, 1 and 2nd
ring. At installation of piston rings on the piston the marked party of each ring has to be turned towards the piston bottom.
The 1st ring 1 differs from the 2nd ring 2 on thickness, a form and color of a surface of contact with cylinder walls.
At installation of an oil scraper ring 3, at first establish a dilator, and then two rings.
|Fig. 2.136. Correct position of locks of oil scraper rings: 1 – arrow; 2 – lock of the 1st piston ring; 3 – lock of the 2nd piston ring and dilator of an oil scraper ring; 4 – lock of the top oil scraper ring; 5 – lock of the lower oil scraper ring
After installation of all rings (the 1st, 2nd and oil scraper ring), focus their locks, as shown in the figure 2.136