VALVE GP-PUMP CONTROL 1043122 - Caterpillar

Remove Pistons & Connecting Rod Assemblies
Start By:a. remove cylinder head assembliesb. remove oil pan 1. Remove the carbon from the top inside surface of the cylinders with tool (A). 2. Turn the crankshaft until two pistons are at bottom center.3. Remove connecting rod caps (1) from the two connecting rods. Put pieces of rubber hose or tape on the threads of the connecting rod bolts as protection for the crankshaft.4. Push the pistons and connecting rods away from the crankshaft until the piston rings are above the cylinder block. 5. Remove the two piston assemblies (2) and the connecting rods. Keep each connecting rod cap with its respective connecting rod and piston. Put identification marks on each connecting rod as to its location for use at installation.
Do not turn the crankshaft while any of the connecting rods are in the engine without the caps installed.
6. Do Steps 2 through 5 for the remainder of the pistons.Install Pistons & Connecting Rod Assemblies
1. Put clean engine oil on the piston rings, connecting rod bearings, cylinder walls, and crankshaft bearing journals.2. Turn the crankshaft until the bearing journal of the pistons to be installed is at bottom center.3. Make sure the piston ring gaps are at least 120° apart on the piston. 4. Use tool (B), and install the piston in position on the same cylinder bore from which it was removed. The hole (crater) in the top of the piston must be toward (nearest) the center of the engine.5. Pull the connecting rod slowly on to the crankshaft.
When the connecting rod caps are installed, make sure that the numbers on the side of the caps are next to and respective with the number on the side of the connecting rods.
6. Put 2P2506 Thread Lubricant on the threads of the rod bolts and seat surfaces of the nuts. 7. Put rod caps (1) in position on the connecting rods, and install the nuts. Tighten the nuts to a torque of 40 4 N m (30 3 lb ft). Put a mark on each nut and the end of each bolt. Tighten the nuts 60° 5° more.8. Do Steps 1 through 7 again for other piston and connecting rod assemblies.End By:a. install cylinder head assembliesb. install oil panDisassemble & Assemble Pistons & Connecting Rod Assemblies (Earlier)
Start By:a. remove pistons & connecting rod assemblies 1. Remove the rings from the piston with tool (A). 2. Remove the bearings from the connecting rod and connecting rod cap.3. Remove snap rings (2), pin (1) and connecting rod (3) from the piston. 4. See Use Of Piston Pin Bearing Removal & Installation Tools, Special Instructions, Form No. SMHS7295, for more information on removal and installation of piston pin bearings.5. Heat the connecting rod to a temperature of 176 to 260°C (350 to 500°F). Put 5P8654 Spacer (8) in the base plate. Put the connecting rod on the base plate of tooling (B) so the post assembly is in the center of the piston