SWITCH AS- 4556633 - Caterpillar

Illustration 1. 5P8639 Press Group. 5P8655 Tool Group (Standard Connecting Rods)
The 5P8655 Tool Group can be used with the 5P8639 Press Group to remove and install piston pin bearings for standard type connecting rods. Illustration 2 and the chart that follows shows the separate parts of the 5P8655 Tool Group.
Illustration 2. 5P8655 Tool Group. 5P8644, 5P8648, 5P8652 Tool Groups (Taper Type Connecting Rods)
The 5P8644, 5P8648 and 5P8652 Tool Groups can be used with the 5P8639 Press Group to remove and install piston pin bearings for taper type connecting rods according to engine or machine model. Illustration 3 shows typical examples of the separate parts in these tool groups. The chart that follows gives the correct part numbers of the separate parts and the correct use of each tool group.
Illustration 3. Typical tools found in the 5P8644, 5P8648 and 5P8652 Tool Groups. Extra Tools Needed
Use the chart that follows for the extra tools needed for use with all the tool groups.
Special Instruction Form No. SMHS7295, "Use of Piston Pin Bearing Removal and Installation Tools", gives the procedures to assemble the 5P8639 Press Group and to remove and install piston pin bearings from both taper and standard type connecting rods. It also gives a list of the models, engine and machine, the new tool groups can be used on to remove and install piston pin bearings.