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 Figure 5-17. Measuring piston clearance.
(6) Inspect cooling surface on under side of the
diameter of the sleeve bearing is more than 1.5030 inch,
piston head. A coating of carbon indicates failure of cooling
replace the sleeve bearing.
oil supply through the drilled passage in the connecting rod.
(8) Fit piston rings into cylinder liner bore (fig. 5-
Clean the orifice at bottom of connecting rod, and the spray
nozzle (9, fig. 5-16) at the top to correct the trouble.
liner, use a piston to push ring into liner bore. Measure the
(7) Inspect and measure inside diameter of piston
end gap for compression rings at from 0.020 to 0.030 inch
pin sleeve bearings (12, fig. 5-16). If clearance exceeds 0.010
(0.025 to 0.040 inch for. chrome compression rings). Gap on
inch, determine whether pin or bearing is worn. If pin
oil control rings should be between 0.010 to 0.020 inch. The
diameter is less than 1.4990 inch, replace pin. If inside
gap may be increased to minimum, by clamping a thin, flat,
fine mill file in a vise and drawing ring ends across the file.
5-21
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