Overview

The Komatsu 234-27-31940 is a genuine OEM front axle bushing engineered for Komatsu motor graders and heavy construction equipment. This precision-machined bushing serves as a critical wear component in the front axle assembly, providing smooth articulation at pivot points while absorbing mechanical stress during grading operations. Manufactured from high-strength hardened steel to OEM specifications, it ensures precise fitment, extended service life, and reliable performance under heavy-duty working conditions.

What Equipment Uses the 234-27-31940 Bushing?

This bushing is used in the front axle assembly of several Komatsu motor grader and construction equipment models. Based on verified OEM parts catalog data, the following models require the 234-27-31940 bushing:

• Komatsu GD705A-3 , Serial Number 10002 and up (Front Axle assembly)
• Komatsu GD705A-4 , Serial Number 21001 and up (Front Axle section 2/3, serial range #21001-21163)
• Komatsu GD705A-3A , Serial Number 10002 and up (Front Axle section 2/3)
• Komatsu GD705A-4A , Serial Number 11001 and up
• Komatsu GH320-2 , Serial Number 11001 and up

Always verify the part number against your machine serial number using the official Komatsu EPC (Electronic Parts Catalog) or by contacting your dealer, as parts can vary by serial number range within the same model.

Where Does This Bushing Fit in the Machine?

The 234-27-31940 bushing is installed in the front axle assembly of Komatsu motor graders. It sits at a critical pivot point where the front axle articulates during steering and grading operations. In the OEM parts diagram, it is cataloged as item number 3 in the front axle exploded view, positioned alongside companion components such as pins and other bushings in the steering linkage. The front axle bushing enables smooth oscillation of the axle, allowing the motor grader blade to maintain contact with the ground surface at various angles. Without a properly functioning bushing, operators may experience steering play, uneven blade contact, and accelerated wear on adjacent components.

Technical Specifications

Part Number	234-27-31940
Brand	Komatsu (Genuine OEM)
Part Type	Bushing
Assembly	Front Axle
Equipment Type	Motor Grader
Material	High-strength hardened steel
Catalog Position	Item #3 (Front Axle diagram)
Application	Front axle pivot point / steering linkage

When Should You Replace the Front Axle Bushing?

Front axle bushings in motor graders are subject to constant stress from steering loads, ground reaction forces, and vibration. Common signs that the 234-27-31940 bushing needs replacement include:

• Excessive steering play , The blade wanders or requires constant correction during grading passes
• Unusual clunking or knocking sounds , Metallic noise from the front axle area during turns or over uneven terrain
• Uneven blade wear patterns , The cutting edge wears unevenly due to inconsistent ground contact
• Visible wear or scoring , Metal-to-metal contact marks on the bushing or mating pin surface during inspection
• Grease leakage , Excess grease around the pivot point indicating seal and bushing degradation

Komatsu recommends inspecting front axle bushings during every 500-hour service interval and replacing them when wear exceeds the specified tolerance. Delaying replacement can lead to damage on the more expensive pin and axle housing components.

How to Replace the 234-27-31940 Bushing

Replacement of the front axle bushing requires hydraulic press equipment and should be performed by qualified technicians. The general procedure involves:

1. Support the front axle assembly and remove the steering linkage connections
2. Drive out the retaining pin from the axle pivot point
3. Press out the worn bushing using a hydraulic press with the correct sizing mandrel
4. Clean the bore surface and inspect for scoring or damage
5. Press in the new 234-27-31940 bushing, ensuring proper alignment
6. Reinstall the pin and steering linkage, applying fresh grease to the pivot point
7. Check steering geometry and adjust as needed

Related Parts in the Front Axle Assembly

When replacing the 234-27-31940 bushing, consider inspecting and replacing these companion components:

• 234-27-31950 , Front axle pin (mates with this bushing)
• 234-27-31930 , Adjacent front axle bushing
• Front axle pivot seals and grease fittings

Why Order from 3GEN Export?

3GEN Export is a global supplier of genuine Komatsu spare parts, operating from offices in the USA, Turkey, and Dubai. We stock a comprehensive range of motor grader components including bushings, pins, seals, and complete front axle assemblies. All parts are sourced from OEM-certified channels with full traceability. Standard delivery is 5 business days worldwide, with expedited shipping available for urgent maintenance needs. Contact our parts specialists for pricing, bulk order discounts, or help identifying the correct part for your Komatsu motor grader. We provide free cross-reference verification for any Komatsu part number.