Komatsu PC340LC-7K-E0 Parts Catalog – Serial Number K45001 and Up

Description

Komatsu PC340LC-7K-E0 Parts Catalog — Serial Number K45001 and Up

This is the illustrated parts catalog for the Komatsu PC340LC-7K-E0 hydraulic excavator, applicable to machines with serial number K45001 and up. Every section pairs a numbered exploded-view drawing with a corresponding parts list showing item numbers, Komatsu part numbers, descriptions, and quantities — giving technicians, parts clerks, and owner-operators a single authoritative reference for identifying and ordering components across the entire machine.

File Details

• Manual Type: Parts Catalog
• Brand: Komatsu
• Model: PC340LC-7K-E0
• Serial Number Range: K45001 and up
• Engine: SAA6D114E-3, S/N 26850008-UP
• Language: English
• Pages: 513
• File Format: PDF

Sections Covered

The Komatsu PC340LC-7K-E0 Parts Catalog is divided into the following major sections, each with sub-assemblies broken out to individual component level:

• B0 — Engine Related Parts
  • Damper, Pump and Tube
  • Engine Mounting
  • Air Cleaner and Connection
  • Muffler
• C0 — Cooling System
• D0 — Fuel Tank and Related Parts
• E0 — Electrical System
• H0 — Hydraulic System
  • Hydraulic pump assemblies
  • Burst valve lines (boom burst valve)
  • Hydraulic piping and hose assemblies
• J0 — Main/Revolving Frame and Related Parts
• K0 — Operator’s Compartment and Control System
  • Cab floor frame, plates and ducts
  • Top guard and front guard
  • Radio
  • Control levers and pilot valves
• M0 — Guard
• N0 — Swing Circle and Related Parts
• P0 — Travel and Lower Piping
• R0 — Under Carriage
  • Center track roller guard
  • Full track roller guard
• T0 — Work Equipment
  • Boom (boom and top pin, for additional piping)
  • Boom (arm cylinder line)
  • Boom (lubricating line)
  • Boom (bucket cylinder line)
  • Boom (cylinder pin and working lamp)
  • Boom (additional line, for additional piping)
  • Boom (additional line, clamp)
  • Boom (additional line, 2 attachment and clamps)
  • Boom cylinder
  • Arm cylinder
  • Arm cylinder (burst valve)
  • Arm 2.2M, 2.6M, 3.2M, and 4.0M variants
  • Arm (bucket link)
  • Arm pin and bucket cylinder hose
  • Arm 1-attachment piping variants
• U0 — Marks and Plates
• V0 — Accessory
• W0 — Miscellaneous
• Y0 — Service Kit and Component Parts
  • Hydraulic pump service kit components
  • Work equipment lever assemblies (L.H. and R.H.)
  • Pilot valve sub-assemblies

Each assembly figure carries a unique reference code (e.g., B0000-01H0, H1250-03A0, T1110-01A1, Y1600-04A0) that cross-references directly to the exploded-view drawing on the facing page. Serial number applicability is noted against every line item — all entries in this catalog are shown as applicable from SN K45001 onward, so there is no ambiguity about which build level a part fits.

Engine Identification

The machine’s engine, the SAA6D114E-3 (serial number range 26850008-UP), is called out on the catalog’s index page. Engine-related parts in Section B0 cover the pump damper, engine mounting hardware, air cleaner and connection assembly, and muffler — all with individual part numbers and quantities. Engine internal components are referenced to a companion engine parts book (book code: saa6d2pc) rather than being repeated here, so this catalog focuses on the engine’s relationship to the machine rather than internal engine components.

IMAGES PREVIEW

Work Equipment Arm Variants

The PC340LC-7K-E0 parts catalog documents four arm length options — 2.2M, 2.6M, 3.2M, and 4.0M — each with its own dedicated parts figure. Single-attachment and dual-attachment piping configurations are also individually broken out, making it straightforward to confirm correct part numbers regardless of which arm and attachment combination is fitted to a specific machine.

How This Parts Catalog Supports Your Work

Whether you are building a repair parts order, verifying a part number before purchase, identifying an unknown component from its assembly drawing, or managing a PC340LC-7K-E0 fleet, this Komatsu PC340LC-7K-E0 Parts Catalog SN K45001 Up gives you exactly what the dealership counter staff consults. Every part number is shown with its correct item reference, assembly context, quantity, and serial number applicability note — eliminating guesswork and reducing the risk of ordering mismatched components.

The PDF downloads immediately after purchase — no waiting, no shipping. Open it on a laptop in the workshop, on a tablet in the field, or print the pages you need for bench reference. Compatible with any PDF viewer on any device. Search by part number or description to jump straight to the assembly you need.