MOUNT AS 3990936 - Caterpillar

Table 1
Required Tools
Part Number Part Description Qty
8T-0455 Liner Projection Tool Group 1
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).
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 the Specifications Module, "Cylinder Block" for the tolerance of the flange projection that is above and below the 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 the Specifications Module, "Cylinder Block" for the dimensions 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 the Disassembly and Assembly, "Cylinder Liner - Remove " and the Disassembly and Assembly, "Cylinder Liner - Install" for the correct procedures.A new cylinder liner is partially finished. Personnel with the correct training are required in order to finish a new cylinder liner. Special equipment and tools are also required. Refer to the Specifications Module for additional information.Note: If a new cylinder liner is installed, new piston rings must be installed.