PLATE AS. 8U0890 - Caterpillar

Removal Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
A 9S-9082 Engine Turning Tool 1
B 271-0498 Expander Ring 1
C - Loctite 8012 1 Start By:
Remove cylinder head.
Remove piston cooling jets.
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
Illustration 1 g00913801
Use Tooling (A) to rotate the crankshaft until bolts (1) can be removed.
Remove the carbon ridge from the top inside surface of the cylinder liner.
Inspect the connecting rod and connecting rod cap for the proper identification mark. The connecting rod and the connecting rod cap should have an etched number on the side. The number should match the cylinder number. Mark the connecting rod and the connecting rod cap, if necessary. Note: Do not stamp the connecting rod assembly.
Remove bolts (1) and connecting rod cap (2). Push the connecting rod until the piston rings are out of the cylinder liner.
Remove the piston and the connecting rod from the cylinder liner. Note: Be careful not to damage the cylinder liner or the crankshaft journal during the removal of the piston and the connecting rod.
Illustration 2 g03716090
Remove the retaining rings that hold piston pin (4). Remove piston pin (4). Remove piston (3) from connecting rod (5).
Remove the bearings from connecting rod (5) and the connecting rod cap. Note: If necessary, separate the piston skirt from the piston crown.
Illustration 3 g03716091
Use Tooling (B) to remove piston rings (6) from piston (3). Installation Procedure
Install pistons (3) and connecting rods (5) in the reverse order of removal.
For the oil control ring, ensure that the ends of the spring are 180 degrees from the ring gap. The white portion of the spring must be visible at the ring gap.
Install the intermediate ring with the side marked "UP-2" toward the top of the piston.
Install the top ring with the side marked "UP-1" toward the top of the piston.
After the rings are installed, rotate the rings so that the gaps are spread apart by 120 degrees. Orient the oil control ring gap toward the bore for the piston pin.
Apply Tooling (C) to the threads of bolts (1).
Illustration 4 g03739270
Section view of connecting rod showing torque sequence. Chamfer (7) and dowel (8) can be used to reference orientation.
Tighten Bolt (A) and Bolt (B) to a torque of 90 5 N m (65 4 lb ft).
Tighten Bolt (C) and Bolt (D) to a torque of 90 5 N m (65 4 lb ft).
Tighten Bolt (C) and Bolt (D) again to a torque of 90 5 N m (65 4 lb ft).
Place an index mark on the bolts and the connecting rod cap. Tighten each bolt for an additional 90 5 degrees (1/4 turn). End By:
Install cylinder head.
Install piston cooling jets.