GUARD AS 4855298 - Caterpillar

Removal Procedure
Start By:
Remove the cylinder head. Refer to Disassembly and Assembly, "Cylinder Head - Remove".
Remove the engine oil pump. Refer to Disassembly and Assembly, "Engine Oil Pump - Remove".
Remove the piston cooling jets. Refer to Disassembly and Assembly, "Piston Cooling Jets - Remove and Install".
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
The joint between the connecting rod and the connecting rod cap is produced by fracturing. The connecting rod assembly must be handled with care in order to avoid damage to the mating surfaces. The connecting rod assembly must be replaced if any damage occurs to the mating surfaces. New connecting rod assemblies come with the connecting rod caps bolted on the connecting rod.Use only a soft jawed vise to hold the connecting rod assembly when removing the connecting rod cap bolts. Use only a soft faced hammer to tap the connecting rod cap when separating the connecting rod cap from the connecting rod.Failure to use a soft jawed vise and a soft faced hammer may result in damage to the connecting rod assembly.
Turn the crankshaft until the connecting rod caps are at the bottom center.
Illustration 1 g01062853
Inspect connecting rod (1) and connecting rod cap (3) for the proper identification mark. The connecting rod and the connecting rod cap should have an etched number on the side that is toward the right side of the engine. The number should match the cylinder number. Mark the connecting rod and the connecting rod cap, if necessary. Do not etch new markings on connecting rod or rod cap.
Remove connecting rod bolts (2) and connecting rod cap (3).
Remove the lower half of connecting rod bearing (5) from connecting rod cap (3).
Push the piston and the connecting rod away from the crankshaft. Remove the upper half of connecting rod bearing (4) from connecting rod (1).
Remove the piston and connecting rod (1) from the cylinder block.