C11 and C13 Industrial Engines Caterpillar

Piston and Rings

Usage:

730C LFF

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Illustration 1	g06194959
388-2310 Piston Body As (6)

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Table 1
Specification for 452-9086 Piston and Rod Gp
Item	Qty	Part	Specification Description
1	1	415-7459 Piston Ring	Install with side marked "UP-1" toward top of the piston. The colored stripe faces to the right of the piston ring end gap.
			Thickness of new top piston ring is 3.945 mm (0.1553 inch).
			Clearance of the ends when assembled in a new cylinder liner of bore 130.025 ± 0.025 mm (5.1191 ± 0.0010 inch) is 0.51 ± 0.05 mm (0.020 ± 0.002 inch).
2	1	331-6025 Piston Ring	Install with side marked "UP-2" toward top of the piston. The colored stripe faces to the right of the piston ring end gap.
			Thickness of new piston ring is 2.980 ± 0.010 mm (0.1173 ± 0.0004 inch)
			Width (A) of the groove in the piston for piston is 3.0525 ± 0.0125 mm (0.12018 ± 0.00049 inch).
			Clearance of the ends when assembled in a new cylinder liner of bore 130.025 ± 0.025 mm (5.1191 ± 0.0010 inch) is 1.00 ± 0.10 mm (0.039 ± 0.004 inch).
3	1	265-1113 Piston Ring	The ends of the spring coil should be placed 180 degrees from the end gap of the oil control piston rings. The colored stripe in the spring coil must be visible at the oil control piston ring end gap.
			Thickness of new oil control piston ring is 3.980 ± 0.010 mm (0.1567 ± 0.0004 inch).
			Width (B) of the groove in the piston is 4.052 ± 0.012 mm (0.1595 ± 0.0005 inch).
			Clearance of the ends when assembled in a new cylinder liner of bore 130.025 ± 0.025 mm (5.1191 ± 0.0010 inch) is 0.45 ± 0.15 mm (0.018 ± 0.006 inch).
-	After installing the piston rings, rotate the piston rings so that the end gaps are placed at 120 degrees distance from each other.
-	Lubricate the entire piston to 360 degrees in zone (C) prior to assembly into the cylinder block. Use clean engine oil.
4	1	197-9327 Piston Pin	Thoroughly lubricate the piston pin with clean engine oil prior to assembly.

			Diameter is 53.155 ± 0.005 mm (2.0927 ± 0.0002 inch). Length is 92.00 ± 0.15 mm (3.622 ± 0.006 inch).
			Bore (D) in the piston body (6) for the piston pin is 53.250 ± 0.010 mm (2.0965 ± 0.0004 inch).
5	2	197-9326 Retainer	Install the pin retainer with the opening towards top of the piston as shown in Illustration 1

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