3054 and 3056 Industrial and Generator Set Engines Caterpillar

Cylinder Liner Projection - Inspect

Usage:

3056 1ML

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Table 1
Required Tools
Part Number	Part Description	Qty
8T-0455	Liner Projection Tool Group	1

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Illustration 1	g00323908
8T-0455 Liner Projection Tool Group (1) 1P-2403 Dial indicator (2) 1P-2402 Gauge body (3) 1P-5507 Gauge block

Use the 8T-0455 Liner Projection Tool Group in order to measure the flange projection of the cylinder liner. Use the gauge block (3) in order to zero the dial indicator (1).
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Illustration 2 g00326384

Measure the liner projection.
(1) 1P-2403 Dial indicator
(2) 1P-2402 Gauge body
Position the gauge body (2) and the dial indicator (1) in order to measure the flange projection in four locations around the cylinder liner. Do not measure the projection from the flame ring, if equipped.
The four measurements should not vary more than 0.03 mm (0.001 inch) from each other. The average projection between adjacent cylinders must not vary more than 0.03 mm (0.001 inch).
Refer to Specifications, "Cylinder Liner" for the tolerance of the flange projection that is above or below the top face of the cylinder block.

Inspection Of The Cylinder Liner

The condition of a cylinder liner is determined by the following criteria:

Check the extent and the location of any polished areas that are on the bore of the cylinder liner. If the bore of the cylinder liner is polished, an engine can have oil consumption that is high with very little wear on the bore. Observe the area that is near the top of the bore of the cylinder liner. The area is just below the ring of carbon. The thrust from the top piston ring is the maximum in this area.
Check the wear that is on the bore of the cylinder liner. Refer to Specifications, "Cylinder Liner" for the maximum permissible wear of the cylinder liner.
Check for damage to the cylinder liner such as cracks and deep scratches.

The cylinder liner does not need to be replaced if the following conditions exist:

The honed finish can be clearly seen on the area of the cylinder liner.
The engine performance and the oil consumption are acceptable.

If the cylinder liner requires replacement, refer to Disassembly and Assembly, "Cylinder Liner - Remove " and Disassembly and Assembly, "Cylinder Liner - Install" for the correct procedures.

Note: If a new cylinder liner is installed, new piston rings must be installed.