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DAMPER AS 4645112 - Caterpillar

4645112 DAMPER AS Caterpillar parts DAMPER
Alternative (cross code) number:
Caterpillar 4645112 DAMPER AS
Weight: 2 pounds 1 kg.

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This procedure is intended to give information on inspecting piston ring grove. Refer to the Specifications Manual for specifications for this procedure.Required Tools
Table 1
Required Tools
Part Number Part Name Qty
8H-8581 Feeler Gauge 1 Inspection Procedure
Inspect the Piston and the Piston Rings
Check the piston for wear and other damage.
Check that the piston rings are free to move in the grooves and that the rings are not broken. Inspect the Clearance of the Piston Ring
Remove the piston rings and clean the grooves and the piston rings.
Illustration 1 g01284934
(1) Feeler gauge
(2) Piston ring
(3) Piston grooves
Fit new piston rings (2) in the piston grooves (3).
Check the clearance for the piston ring by placing the 8H-8581 Feeler Gauge (1) between piston groove (3) and the top of piston ring (2). Refer to Specifications, "Piston and Rings" for the dimensions. Note: Some pistons have a tapered top groove and the piston ring is wedged. The clearance for the top piston ring cannot be checked by the above method when this occurs.Inspect the Piston Ring End Gap
Illustration 2 g01358235
(1) Piston ring
(2) Cylinder ring ridge
(3) Feeler gauge
Clean all carbon from the top of the cylinder bores.
Place each piston ring (1) in the cylinder bore just below the cylinder ring ridge (2).
Use the 8H-8581 Feeler Gauge (3) to measure piston ring end gap. Refer to Specifications, "Piston and Rings" for the dimensions. Note: The coil spring must be removed from the oil control ring before the gap of the oil control ring is measured.

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