ROTOR GP-SWIVEL 7Y4830 - Caterpillar

Illustration 1 g03538397
384-3698 Piston Body As (5)
Table 1
Specification for 384-4314 Piston and Rod Gp
Item Qty Part Specification Description
1 1 434-9020 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 3.93 mm (0.155 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 (5) for the piston pin is 53.250 0.010 mm (2.0965 0.0004 inch).