ARM CYLINDER SEAL KIT – 2438U1174R300

• Part Number: 2438U1174R300
• Part Name: Arm Cylinder Seal Kit
• Machine Application: Kobelco Excavator SK400-3, SK400LC-3, SK400-4, SK400LC-4 series
• Cylinder Size:
  • Rod Size: 130 mm
  • Bore Size: 190 mm

Description

This is a hydraulic repair seal kit used in the arm cylinder of Kobelco excavators. The kit contains all necessary sealing components required to repair or overhaul the hydraulic cylinder and prevent hydraulic oil leakage.

Kit Usually Includes

• Rod Seal
• Piston Seal
• Wiper/Dust Seal
• Buffer Seal
• O-Rings
• Backup Rings
• Wear Rings / Slipper Seals

Function

• Prevents hydraulic oil leakage
• Maintains hydraulic pressure inside the arm cylinder
• Ensures smooth arm movement and digging operation
• Protects the cylinder from dust, dirt, and contamination
• Improves hydraulic cylinder performance and service life

Common Replacement Reasons

• Hydraulic oil leakage from arm cylinder
• Weak or slow arm operation
• Damaged or worn seals
• Loss of holding pressure
• Cylinder repair or overhaul maintenance

Compatible Excavator Models

• Kobelco SK400-3
• Kobelco SK400LC-3
• Kobelco SK400-4
• Kobelco SK400LC-4