INSULATION 3169631 - Caterpillar

If a liner does not meet the liner projection specifications (Chart C), check the thickness of the spacer block and the liner flange to determine if they are correct.
Chart D. Spacer and Block Specifications
Description Dimension
Spacer block thickness 100.00 _b1_ 0.05 mm
(3.937 _b1_.002 in)
Liner flange thickness 100.12 _b1_ 0.03 mm
(3.942 _b1_.001 in)
If the spacer block or liner flange thickness is not within specifications, replace the liner of the spacer plate and repeat the liner projection measurements.
Liner Bore
Inspection
Use a fluorescent light and an FT-1 71 1 Light Table (Illustration 7) to inspect for scratches and pits on the inside surfaces of the liner bore. A fluorescent light works better than an incandescent bulb for inspecting the bore.
Illustration 7
Use an FT-1711 Light Table to inspect the liner bores.
Dealers in the U.S.A. and Canada can order drawings of Fabricated Tools (FT) from NACD Technical Service, (309) 675-5132. Dealers in the COSA and Caterpillar Americas can order FT drawings from the address that follows. All other dealers can order FT drawings from their Subsidiary Service Department.
Caterpillar Inc.
AD 180 T.I.D. Print Room
600 W. Washington Street
East Peoria, IL 61630-0371
Phone: 309-675-7292
Telex: TRT 190425
If pits or light rust spots on the inside surface are directly opposite pits on the outside surface, do not use the liner again. This type of pitting can go through the walls of the cylinder liner into the bore.
Use a FLEX-HONE brush to remove light rust or shiny areas on the inside surface. Liners can be used again if ALL rust, pits, and shiny areas are removed with a FLEX-HONE brush.
If shiny areas have completely worn away a section of the original crosshatch pattern, do not use a FLEX-HONE brush.
Measurement of Bore
Gauges for Measuring
Measure the bore of the cylinder liner, using one of the following tools.
Use a 1P-3537 Dial Bore Gauge Group (English Units). Refer to Special Instruction GMG00981, "Using 1P-3537 Dial Bore Gauge Group to Check Cylinder Bore Size" for measuring instructions.
Use a 6V-7898 Dial Bore Gauge (Metric Units) with the 6V-7899 Setting Fixture (Metric Units). Refer to Special Instructions SMHS8253, "Use of 6V-7898 Dial Bore Gauge Group and SMHS8254, "Using the 6V-7899 Size Setting Fixture Group" for additional information.
Illustration 8
Typical dial bore gauge group.
Measuring Procedure
Measure the bore at two points, 90 degrees apart. Take a measurement in the upper end of the liner at the point of maximum wear. Make another check at the lower end of the liner, at the lowest point of ring wear (Refer to Illustration 9).
Illustration 9.
Using a dial bore gauge to measure inside diameter.
If all bore measurements are acceptable according to Chart E, the liner can be used again with either the original piston,
a reconditioned piston, or a new piston. If a wear step can be easily seen, do not reuse the liner.
Chart E.
Diameter Specifications for Cylinder Liner
Description Dimension
Use again liner bore diameter 125.037_b1_ 0.37
(4.9227_b1_ .0015)Note: All dimensions are mm (in).
Procedure to Clean
Liners
Liners MUST be correctly cleaned prior to storage. The cleaning procedure requires a strong detergent, water, and a nylon brush. Refer to the Caterpillar Tool Guide