BRACE 6N7870 - Caterpillar

Probable Causes
Driven equipment
Cylinder head and related components
Gear train
Crankshaft and related components
PistonRecommended Repairs
Driven Equipment
Inspect the alignment and the balance of the driven equipment. Inspect the coupling. If necessary, disconnect the driven equipment and test the engine.Cylinder Head and Related Components
Inspect the components of the valve train for good condition. Check for signs of damage and/or wear to the valves, cylinder head gasket, etc. Inspect the condition of the camshafts. If a camshaft is replaced, new valve lifters must be installed.Gear Train
Inspect the condition of the gear train.Inspect the engine oil filters for nonferrous material. Flaking of nonferrous material could indicate worn gear train bearings.Crankshaft
Inspect the crankshaft and the related components. Inspect the connecting rod bearings and the bearing surfaces on the crankshaft. Make sure that the bearings are in the correct position.Look for worn thrust plates and wear on the crankshaft.Check the counterweight bolts.Piston
Make sure that the piston pin is correctly installed.Inspect the condition of the pistons according to Guidelines for Reusable Parts and Salvage Operations.