Maintenance guidelines for large excavators during operation
For construction workers, large excavators such as the EX3600 are core heavy equipment, and their operational stability directly affects construction progress, efficiency, and operating costs. The chassis system, as the core of load-bearing and power transmission, bears the machine's own weight and operational load; therefore, standardized and timely maintenance is crucial for avoiding malfunctions and ensuring continuous construction.
For newly commissioned or overhauled large excavators, the first 2000 hours of operation is a critical break-in period. During this time, the fit and precision between various chassis components are undergoing dynamic optimization, and the core maintenance objective is to prevent abnormal wear.
According to maintenance data from an iron ore project, an EX3600 experienced a sudden walking jamming malfunction after 1800 hours of operation. Disassembly and inspection confirmed that the cause was excessive wear on the meshing surfaces of the track shoes and drive wheels. Replacing the original parts would incur high repair costs.
The key maintenance points at this stage are clear: check track tension weekly to prevent derailment due to excessive looseness and increased friction due to excessive tightness; clean oil and gravel from track rollers and carrier rollers monthly to prevent impurities from entering the bearings.
If minor wear occurs, there's no need to rush to replace original parts. Our OEM aftermarket chassis parts are fully compatible with the EX3600, forged from the same steel source as the original parts, with a surface hardness of HRC55 or higher, offering comparable wear resistance at a significantly lower price, making them a cost-effective option.
After 2000 hours of operation, the EX3600 entered a period of high-intensity work, and wear and tear on the chassis's vulnerable parts began to appear intensively. A certain infrastructure project experienced a three-day delay due to simultaneous oil leaks from the idler wheels of three excavators-disassembly revealed that the problem was a chain reaction of failures caused by aging seals.
During this phase, a bi-weekly inspection mechanism needs to be established: Focus on checking the integrity of the idler wheel seals; if oil leakage is observed, replace the seals immediately. Observe whether the track shoe bolts are loose to prevent them from falling off during operation and causing safety hazards. Our OEM aftermarket chassis parts cover a full range of products including idlers, track shoes, and track rollers. Through precise size calibration, they are perfectly compatible with the EX3600 chassis, requiring no interface modifications during installation.
High-level operation (over 8000 hours)
When the operating time exceeds 8,000 hours, the excavator chassis enters the critical aging point, at which point quarterly in-depth maintenance is required: a complete disassembly of the chassis is performed to inspect the wear of the track roller bushing and drive wheel gear ring; if the wear exceeds the safety threshold, they should be replaced immediately; at the same time, rust removal and lubrication treatment should be carried out on the chassis connection parts to delay metal aging.
An excavator in a certain mine suffered overall chassis damage due to a broken track roller axle; the cause was the long-term neglect of the cumulative effect of bushing wear.
High-quality OEM chassis components
Our OEM chassis parts utilize a reinforced process and feature an added wear-resistant coating on high-wear areas. When used on older equipment with over 8,000 hours of service, this effectively reduces the failure rate. Several mining companies have already designated STONE chassis parts as their preferred replacements, extending the average lifespan of their equipment by 1.5 years.
Customized services
Our OEM chassis parts are ISO9001 certified, offering excellent compatibility, high cost-performance, and warranty service. Please feel free to contact us for specific product models or customized solutions.
