IHI Model 55N Mini Excavator Parts Catalog (327 P.)

IHI 55N Parts Catalog Preview

• Covers the IHI Model 55N Mini Excavator, documenting structural components, hydraulic systems, and track assemblies for serial range WP000001 and above
• Official OEM construction machinery publication PUB.No.2
• Contains 103 detailed exploded-view diagrams illustrating component assembly and part relationships
• No shipping wait — the PDF is available immediately after purchase
• Indexed PDF search covers every chapter and appendix
• This parts catalog is the authoritative record for identifying original hardware, including track shoes, hydraulic piping, swing drives, and boom cylinder rebuild components

Component Assembly Walkthrough

The IHI 55N parts catalog is organized into five specialized sections covering the major subsystems of the mini excavator. Section 1 documents the lower machine, featuring comprehensive breakdowns of the crawler shoe assemblies, including variants for rubber crawlers, steel shoes, and specific link-chain configurations. Section 2 focuses on the turntable and swing bearing assembly, detailing the mounting hardware and lubrication components required for proper rotation. Section 3 outlines the swing drive device, while Section 4 provides an exhaustive list of the complex hydraulic piping architecture, covering return and suction lines, pump discharge paths, and control valve connections across different lever configurations.

Specification Highlights

This manual provides specific technical data to assist with parts identification and system maintenance. The hydraulic system relief pressure is established at 9860–10825 kPa (1430–1570 psi) for standard operations. Traction motor assembly fastening requires torque values documented at 113 N·m (83 lb-ft). Boom cylinder assemblies utilize a 50 mm bore diameter for specified load-bearing applications. Standard hydraulic tank volume is listed at 90 L (23.8 US gal). All service data shown here is for reference only — qualified technicians and the original OEM documentation remain the authoritative source for any hands-on work. What factory parts documentation covers provides further insight into the terminology and cross-referencing used throughout this catalog. This 321-page IHI OEM parts catalog is the definitive identification reference for the 55N series mini excavator, documenting structural, hydraulic, and mechanical components across all major factory configurations.

Document Reference: PUB.No.2