Komatsu PC130-8 Hydraulic Excavator Swing Circle Assembly

This instruction show you guide on how to remove and install swing circle assembly for Komatsu PC130-8 hydraulic excavator.For more Komatsu case,please refer to:Komatsu trouble repair.



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Remove and Install Front Oil Seal for Komatsu PC130-8 Excavator



Gradually loosen the hydraulic oil tank cap to bleed the air from the tank after grounding the work equipment and stopping the engine and lock the safety lock lever.
1.Remove the revolving frame assembly by referring to “Removal of revolving frame assembly”.
2.Temporarily lift swing circle assembly (1) to remove the 38 mounting bolts. [*1]
3.Remove swing circle assembly (1). [*2]
4.Swing circle assembly : 155 kg



Installation is performed in the opposite way to removal.

2 Swing circle mounting bolt:

Liquefied adhesive (LT-2)

3 Swing circle mounting bolt :

245 – 308.9 Nm {25 – 31.5 kgm}

Lift swing circle assembly (1) and install it on the track frame with the inner wheel soft zone

“S” symbol (a) of the inner race facing the right side of the body as shown in the figure.

2 Amount of circle grease sealed: 9.1l

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