Note: The following procedure does not require the use of an H bar to hold the liners while the liner projection measurements are taken.
The 8T-0455 Liner Projection Tool Group can be used to check the liner projection. Refer to Special Instruction, SMHS7727, “Use of 8T-0455 Cylinder Liner Projection Indicator Group” for more information on the use of the tool.
|Liner Projection Components
(4) Spacer plate
(5) Cylinder liner
|Item||Part Number||Description||Quantity For One Cylinder||Quantity For Six Cylinders|
Note: The 7K-1977 Washer is made of a cotton fabric that is impregnated with resin. The washers will not damage the sealing surface of the cylinder block. These washers are a disposable item. You may wish to order more washers than the amount that is indicated.
- Install a new spacer plate gasket and a clean spacer plate.
- Install the washers. Install all bolts or the six bolts around the liner.Torque for bolts … 95 N·m (70 lb ft)
- Use the 8T-0455 Liner Projection Tool Group to measure the liner projection at “A”, “B”, “C” and “D”.
- Record measurements for each cylinder.
- Add the four readings for each cylinder. Divide the sum by four in order to find the average.
|Liner Projection||0.025 to 0.152 mm (0.0010 to 0.0060 inch)|
|Maximum Variation In Each Liner||0.051 mm (0.0020 inch)|
|Maximum Average Variation Between Adjacent Liners||0.051 mm (0.0020 inch)|
|Maximum Variation Between All Liners||0.102 mm (0.0040 inch)|
Note: If the liner projection changes around the liner, turn the liner to a new position within the bore. If the liner projection is not within specifications, move the liner to a different bore. Inspect the top face of the cylinder block.
The 138-9381 Spacer Plate should be installed, if all of the liner projection measurements are below the specifications. The 138-9381 Spacer Plate should also be installed if the liner projection measurements are low within a range. This spacer plate is 0.076 mm (0.003 inch) thinner than the regular spacer plate. This spacer plate will increase the liner projection. Use this spacer plate in order to compensate for low liner projections that are less than 0.076 mm (0.003 inch). Use this spacer plate if the inspection of the top deck reveals no measurable damage directly under the liner flanges but the average liner projection is less than 0.076 mm (0.003 inch).
Do not exceed the maximum liner projection of 0.152 mm (0.006 inch). The excessive liner projection will contribute to cracking of the liner flange.
When the liner projection is correct, put a temporary mark on the liner and the spacer plate. Set the liners aside.
Note: Refer to Disassembly and Assembly, “Cylinder Liner – Install” for the correct final installation procedure for the cylinder liners.