SEAL 3256190 - Caterpillar

Assembly Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
A 1P-1857 Retaining Ring Pliers 1
B 1U-6683 Ring Expander 1
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
Ensure that all components are clean and free from wear or damage. If necessary, replace any components that are worn or damaged.
Follow Step 2.a through Step 2.e in order to install the piston rings onto the piston.
Illustration 1 g03341237
Position the spring for oil control ring (7) into the oil ring groove in the piston. The central wire must be located inside the end of the spring.
Illustration 2 g03341230
Use Tooling (B) to install oil control ring (7) over the spring. Note: Ensure that the central wire is 180 degrees from the ring gap.
Use Tooling (B) to install intermediate compression ring (6) into the second groove in the piston. The Letter "T" and the Chamfer (Y) on the inner face of the ring must be upward.
Use Tooling (B) to install top compression ring (5) into the top groove in the piston. The Letter "T" must be upward.
Position the piston ring gaps at 120 degrees away from each other.
Illustration 3 g03341238
Illustration 4 g03341239
Lubricate the bush in connecting rod (1) and lubricate the bore for the piston pin in piston (2) with clean engine oil.
Place the piston on a suitable surface with the crown downward. Install connecting rod (1) and piston pin (3) to piston (2). The name Shibaura in Position (T) is on inside the piston, must align with the stamped Number (X) on the connecting rod. Ensure the correct orientation of the connecting rod in the piston. Note: If the piston pin cannot be installed by hand, heat the piston to a temperature of 45 5 °C (113 9 °F). Do not use a torch to heat the piston.
Use Tooling (A) in order to install retaining rings (4) to the piston pin bore in piston (2). Note: Ensure that the retaining rings are seated in the grooves in the piston.
Illustration 5 g01311837
Typical example
Install the upper half of connecting rod bearing (8) to connecting rod (1).
Install the lower half of connecting rod bearing (9) to connecting rod cap (10). End By:
Install the pistons and the connecting rods. Refer to Disassembly and Assembly, "Piston and Connecting Rods - Install" for the correct procedure.