208-27-00240 Final Driver for KOMATSU PC400-7 PC400LC-7 PC450-7 PC450LC-7 Excavator Parts Replacement Travel Motor with Reduction Device

• Complete Travel Drive Assembly: Combines the travel motor and reduction gearbox into one complete final drive unit for excavator track travel applications.

• Direct Replacement Design: Designed for Komatsu PC400-7, PC400LC-7, PC450-7, and PC450LC-7 excavator travel systems, helping reduce installation time during maintenance or repair.

• Reduction Gear Transmission: The reduction gearbox converts hydraulic motor output into the torque required to drive the excavator sprocket and tracks.

• Heavy-Duty Excavator Application: Suitable for the demanding working conditions of large crawler excavators, including earthmoving, quarry, construction, and mining operations.

• Internal Components: Large‑displacement piston motor group, multi‑stage planetary gear set, carrier assembly, spring‑applied wet multi‑disc parking brake, built‑in counterbalance & overload relief valve
• Hydraulic Working Fluid: Anti‑wear hydraulic oil ISO VG68
• Gearbox Lubricant: Heavy‑load industrial gear oil ISO VG220
• Rated Working Pressure: 32.5 MPa
• Max Instant Peak Pressure: 35.5 MPa
• Max Output Torque: OEM‑specified high torque for 40‑45 ton excavator platform
• Shift Function: Hydraulic pilot controlled high‑low two‑speed travel switching
• Brake Mode: Spring‑engaged, hydraulic‑released negative parking brake for slope holding
• Mounting Interface: Original large‑size bolt circle, spigot dimension and hydraulic port layout

Direct Fit Excavator Models:

• Komatsu PC400-7
• Komatsu PC400LC-7
• Komatsu PC450-7
• Komatsu PC450LC-7

Part Number:

• 208-27-00240

Please confirm the excavator model, machine serial number, existing part number, and installation side before ordering to ensure correct fitment.

• Check Hydraulic Cleanliness: Before installation, inspect the hydraulic system and replace contaminated hydraulic oil or filters if necessary. Contamination can damage the travel motor and internal rotating components.

• Inspect the Case Drain Line: Ensure the travel motor case drain line is clean and unrestricted. A blocked case drain line may cause excessive internal pressure and seal failure.

• Fill and Inspect Gear Oil: Check the reduction gearbox lubricant level before machine operation. Use the gear oil grade specified in the excavator maintenance manual.

• Check Mounting Bolts and Sprocket Connection: Tighten all travel drive mounting bolts and sprocket bolts according to the Komatsu service requirements. Recheck bolt tightness after initial operation.

• Monitor for Abnormal Noise or Leakage: During initial operation, inspect for hydraulic oil leakage, gear oil leakage, overheating, vibration, or abnormal gear noise.

Q1: What is 208-27-00240?
A: 208-27-00240 is a final drive assembly used in the travel system of compatible Komatsu PC400-7, PC400LC-7, PC450-7, and PC450LC-7 excavators. It includes the travel motor with the reduction gearbox.

Q2: Is this product used for the excavator travel system?
A: Yes. This final drive assembly transmits hydraulic power to the sprocket, allowing the excavator tracks to move forward, reverse, and turn.

Q3: What information should be checked before ordering?
A: Please verify the machine model, serial number, existing part number, photos of the old unit, and the required installation side before purchasing.

Q4: What should be inspected before installing a replacement final drive?
A: Inspect hydraulic oil cleanliness, filters, case drain line condition, sprocket condition, mounting surface, and gearbox oil level before operating the excavator.