SLEEVE-WEAR 1T1247 - Caterpillar

Remove Pistons & Connecting Rod Assemblies
Start By:a. remove cylinder head assemblyb. remove piston cooling tubes Fluid Spillage ContainmentCare must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting and repair of the machine. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids. Refer to "Tools And Shop Products Guide", NENG2500 for tools and supplies suitable to collect and contain fluids in Caterpillar machines. Dispose fluids according to local regulations and mandates.1. Remove the carbon ridge from the top inside surface of the cylinder liners. 2. Turn the crankshaft until two pistons are at bottom center.3. Remove bolts (1) and the bearing caps. Push the rods and pistons up until the rings are out of the cylinder liners. 4. Remove pistons (2) and the connecting rods from the cylinder liners.5. Do Steps 1 through 4 for the remainder of the pistons and connecting rods.Install Pistons & Connecting Rod Assemblies
1. Put clean engine oil on piston rings, connecting rod bearings and cylinder liners. Some engines use pistons which have an "arrow" [marked (A) in photo D21371 above], stamped on the crown of the piston. Some engines have the word "Front" and an "arrow" [marked (B) in photo D21371 above] stamped on the crown of the piston. Make sure the "arrow" is pointing to the front of the engine when the piston is installed.
2.3 mm (.09 in)difference, to match the inlet and exhaust valve diameters. If installed incorrectly, piston to valve contact may occur. The small diameter pockets must be to the rear (under the exhaust valves). The large diameter pockets must be to the front (under the inlet valves).
2. Use Tool (A), and install piston (2) and the connecting rod in the cylinder liner. Be sure the number of the tab groove side of the connecting rod is on the opposite side from the camshaft.3. Install the bearing cap on the connecting rod with the number on the side of the bearing cap on the same side and same number as on the connecting rod.4. Put 4C-5593 Thread Compoundon the threads of the bolts. Install the nuts, and tighten them to a torque of 90 8 N m (67 6 lb ft). Put a mark on the nuts and cap, and tighten the nuts an extra 90 5 degrees.5. Do Steps 1 through 4 for the remainder of the pistons and connecting rods.End By:a. Install piston cooling tubesb. install cylinder head assemblyDisassemble & Assemble Pistons & Connecting Rod Assemblies
Start By:a. remove pistons and connecting rod assemblies 1. Remove bearings (3) from the connecting rod and connecting rod cap.2. Remove retainer ring (1) with Tool (A)3. Remove pin (2) and connecting rod (4) from the piston.4. Remove piston rings (5) from the piston with Tool (B). Clean the piston ring grooves on the pistons with an acceptable ring groove cleaning tool.5. Separate piston crown (7) from piston skirt (8). See the topic