Generac Power Systems 941-2, 940-2 Piston Continued, Part SPECIFICATIONS & CHARTS, Model

Part 8

SPECIFICATIONS & CHARTS

	PISTON (CONTINUED)
MODEL		GV-220
WRIST PIN BORE
DIAMETER:
DESIGN DIAMETER		0.708-0.709 inch
		(18.000-18.011mm)
TOP RING GROOVE
WIDTH:
DESIGN WIDTH		0.059-0.061 inch
		(1.52-1.54mm)
SECOND RING
GROOVE WIDTH:
DESIGN WIDTH		0.059-0.061 inch
		(1.52-1.54mm)
OIL CONTROL RING
GROOVE WIDTH:
DESIGN WIDTH		0.118-0.119 inch
		(3.01-3.03mm)
TOP RING WIDTH:
DESIGN WIDTH		0.057-0.059 inch
		(1.47-1.49mm)
TOP RING END GAP: *
DESIGN END GAP		0.005-0.016 inch
		(0.15-0.40mm)
SECOND RING WIDTH:
DESIGN WIDTH		0.057-0.059 inch
		( 1.465-1.490mm)
SECOND RING END GAP: *
DESIGN END GAP		0.006-0.016 inch
		(0.15-0.40mm)
OIL CONTROL RING
WIDTH:
DESIGN WIDTH		0.111-0.118 inch
		(2.825-3.003mm)
OIL CONTROL RING
END GAP: *
DESIGN END GAP		0.015-0.055 inch
		( 0.38-1.40mm)

*NOTE 1: Measure end gap with ring pushed down in cylinder to depth of 2.75 inches

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