SHAFT 6S3934 - Caterpillar

Removal Procedure
Start By:
Remove the cylinder head.
Remove the engine oil pump.
Remove the piston cooling jets.
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
Illustration 1 g01261956
Turn the crankshaft until the connecting rod caps are at the bottom center.
Place an identification mark on the connecting rod and connecting rod cap (2). The number should match the cylinder number.
Remove bolts (1) and connecting rod cap (2) .
Illustration 2 g01261959
Remove the lower half of connecting rod bearing (4) from connecting rod cap (2) .
Push the piston and the connecting rod away from the crankshaft. Remove the upper half of connecting rod bearing (4) from connecting rod (3) .
Remove the piston and connecting rod (3) from the cylinder block.Installation Procedure
Table 1
Required Tools    
Tool     Part Number     Part Description     Qty    
A     363-4046     Piston Ring Compressor     1    
B     4C-5593     Anti-Seize Compound     1    
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
Apply clean engine oil to the pistons, the piston rings, and the cylinder bore.
Illustration 3 g02162176
Position the piston rings so that the end gaps are located 120 degrees from each other. Install Tooling (A) in order to compress the piston rings. When installing tooling (A), ensure that the tooling is positioned above the piston skirt which is marked (C) .Note: Install the piston and connecting rod so that the forging number on the connecting rod points toward the flywheel end of the engine.
With the number one crankshaft throw at the bottom center, install the piston and connecting rod in the engine. Ensure that the proper piston and connecting rod are in the corresponding cylinder with the bearing retainer notch toward the right side of the engine.
Line up the piston and the connecting rod with the crankshaft. Use a soft faced hammer and tap the piston into the cylinder bore until Tooling (A) comes off the piston.
Illustration 4 g01261959
Illustration 5 g01261956
Before connecting rod (3) comes in contact with the crankshaft, install the upper half of connecting rod bearing (4). Ensure that the bearing tab engages with the slot in connecting rod (3) .
Apply clean engine oil to the surface of the upper half of connecting rod bearing (4). Use a soft faced hammer in order to tap the piston into the cylinder bore while you guide connecting rod (3) onto the crankshaft.
Place the lower half of connecting rod bearing (4) in corresponding connecting rod cap (2). Ensure that the bearing tab engages with the groove in connecting rod cap (2) .
Apply clean engine oil to the surface of the lower half of connecting rod bearing (4). Install connecting rod bearing cap (2) on connecting rod (3). Ensure that the number on connecting rod cap (2) matches the number on connecting rod (3). Ensure that the numbers are on the same side.
Lubricate the new connecting rod bolts with Tooling (B) .
Install new bolts (1). Tighten bolts (1) to a torque of 50 5 N m