As a heavy machinery and construction equipment repair company, we at Sai Heavy Machinery Engineering in Kumagaya, Saitama Prefecture, would like to share the top 3 most frequently requested repair areas for heavy machinery and construction equipment. By checking these commonly failing areas in advance, you can prevent serious accidents and avoid work interruptions.

Top 3 Most Common Repair Areas for Heavy Machinery and Construction Equipment Such as Excavators

Let us proceed directly to the main topic.
By knowing in advance the areas with high failure rates (even if you already know them), you can pay closer attention during routine maintenance and inspections, and identify potential issues when you notice something unusual.

First Place: Hydraulic Cylinder Oil Leak Repairs

Nearly all heavy machinery and construction equipment utilize hydraulic power to generate tremendous force and perform tasks that would be impossible by human hands alone.

This component, which bears the greatest load during the operation of heavy machinery and construction equipment, deteriorates quickly over time and has the highest failure rate.

We recommend regular visual inspections for oil leaks and seepage, along with periodic oil changes and seal replacements.

While some customers consistently repair oil leaks only after they occur, we strongly recommend adopting a preventive maintenance approach—similar to preventive medicine for humans—and performing overhauls before failures occur to extend the life of your heavy machinery and construction equipment.

Second Place: Body Panel Painting and Welding Repairs

As shown in our repair case studies at Sai Heavy Machinery Engineering, we receive many inquiries and requests for body panel painting and welding repairs for heavy machinery and construction equipment.

A major benefit of body panel painting is rust prevention.
Heavy machinery and construction equipment that work daily in scorching heat and rain, experiencing impacts and collisions, are essentially in a battered physical condition.

Rust indicates an unprotected, exposed state, and if left unattended, deterioration can rapidly accelerate.

Do not leave rust or damage unattended with the attitude of “it’s just…”
Perform body panel painting and welding repairs as soon as possible.

Third Place: Track Derailment and Rubber Track/Rubber Pad Replacement Repairs

In general terms, repair requests and inquiries related to the undercarriage of heavy machinery and construction equipment rank third.
When the travel distance to the worksite is long or the site has many rocky areas, the deterioration and damage rate of rubber crawlers and rubber pads inevitably increases, and tracks tend to derail more frequently for various reasons.

In the case of oil leaks, you can sometimes manage to work through the day with temporary measures, but undercarriage failures physically immobilize the equipment, causing immeasurable damage to the worksite.

In addition to daily maintenance, please make a habit of replacing parts early and regularly.
In the worst case, Sai Heavy Machinery Engineering offers on-site repair services primarily in Saitama Prefecture and throughout the Kanto region.
Please contact us by phone or LINE.

Summary

In this article, we presented the top 3 most common repair areas for heavy machinery and construction equipment such as excavators in a ranking format.

Of course, the ranking order and content will vary depending on the region and the characteristics of each contractor.
This is merely an example from Sai Heavy Machinery Engineering, a heavy machinery and construction equipment repair company located in Kumagaya, Saitama Prefecture.

However, one thing that can be said nationwide is that hydraulic cylinder-related repairs are common.
Due to the nature of heavy machinery and construction equipment, this is unavoidable.
The most important thing is to avoid work interruptions through early detection and timely replacement before failures occur.

If you are unable to keep up with regular inspections or are concerned about overlooking issues, please consult with us at Sai Heavy Machinery Engineering.
We can provide various plans and support services.