SEAL 0534155 - Caterpillar

2. Turn the crankshaft until two pistons are at bottom center. Remove two nuts (2) and connecting rod cap (1) from the connecting rod.3. Put tape or pieces of rubber hose over the threads of the connecting rod bolts. This will prevent damage to the crankshaft during removal of pistons.
Do not let the connecting rods hit the bottom edge of the cylinder liners or the crankshaft during removal and installation of the pistons.
4. Push the piston and connecting rod away from the crankshaft until the piston rings are above the cylinder liner. Remove the piston (3) and the connecting rods from the engine.5. Keep each connecting rod cap with its respective connecting rod and piston. Put identification on each connecting rod as to its location in the engine for use at assembly of the engine.6. Do Steps 2 through 5 for the remainder of the pistons.Install Pistons
1. Turn the crankshaft until the bearing journals for the piston to be installed are at bottom center.2. Put clean engine oil on the crankshaft journals and on the inside of the cylinder liners. Put clean engine oil on the piston rings and connecting rod bearings.3. Move the rings on the piston until the ring openings are approximately 90° apart.
Never install the ring compressor on the piston unless the cylinder liner is used as a guide. Damage to the piston rings can be the result.
4. Put ring compressor (A) in position on the cylinder liner. Put the connecting rod and piston in position in the same cylinder liner from which it was removed and into the ring compressor. Make sure the "V" mark on the piston is in alignment with the "V" mark on the cylinder block. If a replacement rod or piston is to be used, the bearing tab notch on the rod must be on the same side of the assembly as the cutout (depression) on the top of pistons.5. Push the piston into place as the connecting rod is put in position on the crankshaft. 6. Put clean engine oil on bearings, bolt threads and surfaces of the nuts that make contact with the connecting rod caps. Put caps (1) in position on the connecting rods and install the nuts. Tighten the nuts to a torque of 30 3 lb.ft. (40 4 N m). Put a mark on each nut and the end of each bolt. Tighten the nuts 90° 5° more.
When connecting rod caps are installed, make sure the number on the side of the cap is next to and respective with the number on the side of the connecting rod.
7. Follow the same above procedure for installation of the remainder of the pistons.end by:a) install oil pan plateb) install cylinder headDisassemble Pistons
start by:a) remove pistons 1. Remove the rings from the piston with tool (A).2. Remove the bearings from the connecting rod and connecting rod cap. 3. Remove retaining rings (3), pin (1) and connecting rod (2) from the piston.4. See USE OF PISTON