C1.1, C1.5 and C2.2 Engines for Caterpillar Built Machines Caterpillar

Assembly Procedure

1. If the piston pin bushing was removed, use a suitable press and Tooling (C) to install a new piston pin bushing into connecting rod (1).

   Note: Lubricate all components with clean engine oil.

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   Illustration 1	g00829406
   Typical example

   Note: Refer to Specifications, "Pistons and Rings" for more information on piston identification.

2. Use the following procedure with Tooling (B) to install piston rings on piston (2).
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   Illustration 2	g00836010
   Typical example

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   Illustration 3	g01128283
   Typical example

   1. Install oil control piston ring (7) in the groove that is lowest on the piston. The latch pin (9) that is on the oil control ring (7) must be inside the ends of spring (10).

      Note: Ensure that the latch pin that is on the oil control ring is 180 degrees from the oil control ring gap.

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      Illustration 4	g01038129
      Typical example

   2. Install the intermediate piston ring (6) with the tapered face into the second groove on the piston. The step (Y) must be toward the top of the piston.

   3. Install the top piston ring (5) with the barrel and the molybdenum insert into the top groove on the piston. The scribe mark must be toward the top of the piston.

   4. Position the piston ring gaps at 90 degrees away from each other.
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   Illustration 5	g01038130
   Typical example

3. Align identification marks (Z) on connecting rod (1) and piston (2).

   Note: The Shibaura name inside the piston must align with the stamped number on the connecting rod.

4. Install piston pin (3) into piston (2) and connected rod (1).

   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 oxyacetylene torch to heat the piston. Mark the piston pin for installation.

5. Use Tooling (A) to install two retaining rings (4).
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   Illustration 6	g01128280
   Typical example

6. Install the bearing shells (13) to the connecting rod (1) and the connecting rod cap (12).

7. Install the connecting rod cap (12) and the connecting rod nuts (11) to the connecting rod (1).

End By:

1. Install the pistons and the connecting rods. Refer to Disassembly and Assembly, "Piston and Connecting Rods - Install".