In the mining and construction industries, the Komatsu D355A is known as an incredibly tough "workhorse." However, because the majority of units currently in operation have high hour meters, the right maintenance strategy becomes the determining factor between profitability and loss. Without routine maintenance, the risk of sudden breakdowns can swell into expensive repair costs.
Good asset management is key to Company Investability. Companies that can efficiently maintain their classic fleet demonstrate operational maturity in the eyes of investors and business partners.
Before delving into the technical aspects of maintenance, make sure you also understand the basic capabilities and economic value of this unit. If you are considering adding to your fleet or have just acquired a unit, read our review of Komatsu D355A: Legendary Bulldozer Specifications and How to Get One as a comprehensive procurement reference.
Main Focus of Komatsu D355A Bulldozer Maintenance
To keep this legendary bulldozer productive, three main areas require special attention:
Undercarriage System (Tracks and Wheels)
The undercarriage accounts for approximately 50% of the total bulldozer maintenance cost. Ensure track tension is always appropriate for the working terrain. Clean accumulated soil or rocks that slip between the rollers to prevent premature wear on track links and sprockets.
Engine Cooling and Lubrication System
The SA6D155 engine in the D355A is powerful but sensitive to overheating. Perform regular engine oil and filter changes. Ensure the radiator is clean of thick mining dust for optimal air circulation.
Hydraulic System and Ripper Maintenance
As a ripping tool, the D355A's hydraulic system operates under high pressure. Check for leaks in cylinder seals and ensure the ripper shank and points are sharp. Using worn components will drastically increase fuel consumption, impacting your TCO Analysis.
Periodic Maintenance Checklist: Preventing Costly Downtime
Neglected minor damage is the main cause of Non-Productive Time (NPT). As discussed in the Downtime Reduction Case Study, prevention is always cheaper than a complete overhaul.
Here is a brief checklist for your mechanic team:
Daily: Check oil levels, radiator water, and fuel leaks.
Every 250 Hours: Change engine oil and clean the air filter.
Every 500 Hours: Change fuel filters and check fan belt tension.
Every 1000 Hours: Perform oil sampling (Oil Analysis) to detect early wear of internal engine components.
Sourcing Specific Komatsu D355A Spare Parts
One of the challenges of maintaining classic units is finding the right spare parts. In the market, you will be faced with a choice between Genuine Parts, OEM (Original Equipment Manufacturer), or Aftermarket.
ID Industri simplifies this process through the Marketing, Advertising, and Promotion (MAP) model. We provide access to a verified network of specialist Komatsu spare parts vendors throughout Indonesia.
If you have difficulty finding components such as:
Main Pump or Final Drive
Track Rollers and Idlers
Engine Rebuild Kit
You can use our RFQ ID (Request for Quotation) feature. Simply enter the part number or description of the required component, and let spare parts vendors send their best offers directly to you.
In maintaining a legendary bulldozer like the Komatsu D355A, the selection of spare parts not only impacts machine performance but also your company's regulatory compliance. Using components from certified local vendors can help maintain or even improve the Local Content Level (TKDN) score of your mine operations. If you are preparing a procurement report, be sure to read How to Calculate TKDN for the Heavy Equipment & Mining Sector 2026, then find verified spare parts vendors directly through the ID Industri directory.
Looking for spare parts or need help from a specialist mechanic for your Komatsu D355A? Submit a Request for Quotation (RFQ ID) Now and find the right spare parts partner in the ID Industri ecosystem.