2f3e5fd0

2.2.7.11. Check of landing of a piston finger

Fig. 2.115. Measurement of internal diameter of the plug of the top head of a rod


By means of a dial nutrometr measure the internal diameter of the plug of the top head of a rod (fig. 2.115).
Standard diameter – 22,005–22,017 mm.
Extreme diameter – 22,017 mm.
Calculate value of a gap between a piston finger and the plug.
Standard gap – 0,005–0,011 mm.
Limit gap – 0,05 mm.
If the gap is more than maximum, replace the plug. If necessary replace the piston and a piston finger assembled.