C175-16 Locomotive Engine Caterpillar

Piston and Rings

Usage:

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Illustration 1	g06086671
Typical example

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Table 1
Specification for 395-0315 Piston and 395-0322 Piston
Item	Qty	Part	Specification Description
Before you install piston and rod assembly, apply clean engine oil to the piston skirt, piston lands, and the piston rings.
1	1	477-2236 Piston Ring	Install the top piston ring with the "UP-1" side toward the top of the piston.
			Width of groove in new piston for the top piston ring 3.60 ± 0.10 mm (0.142 ± 0.004 inch).
			Thickness of new top piston ring is 3.465 to 3.490 mm (0.1364 to 0.1374 inch).
			When the new top piston ring is installed in a cylinder liner with a bore size of 175 mm (6.9 inch), the clearance between the ends of the piston ring is 0.625 ± 0.125 mm (0.0246 ± 0.0049 inch).
2	1	286-8928 Piston Ring	Install the intermediate piston ring with the "UP-2" side toward the top of the piston.
			Width of groove in new piston for the intermediate piston ring 3.110 ± 0.010 mm (0.1224 ± 0.0004 inch).
			Thickness of new intermediate piston ring is 2.97 to 2.99 mm (0.117 to 0.118 inch).
			When the new intermediate piston ring is installed in a cylinder liner with a bore size of 175 mm (6.9 inch), the clearance between the ends of the piston ring is 1.000 ± 0.125 mm (0.0394 ± 0.0049 inch).
3	1	254-2054 Piston Ring	Orient the ends of the oil control piston ring 180 degrees from the ring end gap.
			Width of groove in new piston for the oil control piston ring 4.060 ± 0.010 mm (0.1598 ± 0.0004 inch).
			Thickness of new oil control piston ring is 3.97 to 3.99 mm (0.156 to 0.157 inch).
			When the new oil control piston ring is installed in a cylinder liner with a bore size of 175 mm (6.9 inch), the clearance between the ends of the piston ring is 0.5 to 0.8 mm (0.02 to 0.03 inch).
			Note : After the piston rings have been installed, rotate the piston rings so that the end gaps are 120 degrees from each other.
4	1	392-4608 Piston Pin	Note : Before assembly of the piston pin to the piston, coat the piston pin with clean engine oil.
			Outside diameter is 75.000 ± 0.005 mm (2.9528 ± 0.0002 inch).
			Inside diameter is 28.0 ± 0.5 mm (1.10 ± 0.02 inch).
			Length is 109.85 ± 0.25 mm (4.325 ± 0.010 inch).
			Bore in piston for the piston pin is 75.121 ± 0.008 mm (2.9575 ± 0.0003 inch).

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Illustration 2	g06086672

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Table 2
Item	Qty	Part	Specification Description
5	2	253-1238 Pin Retainer	Install the pin retainer with the gap toward the area (6). Refer to Illustration 2.
			Thickness of pin retainer is 2.36 ± 0.08 mm (0.093 ± 0.003 inch).
			Width of groove in new piston for the pin retainer 2.65 to 2.85 mm (0.104 to 0.112 inch).
			Refer to Table 3 for the part numbers of the tools that are used in servicing the piston.