Analysis of the Implementation of 1000 Hours Meter Periodic Service Intervals on the Komatsu D855ESS - 2 Bulldozzer

Abstract

Bulldozers are essential heavy equipment in mining and construction operations, where continuous operation under high workloads increases the risk of component degradation and system failure. This study aims to analyze the implementation of periodic service intervals on the Komatsu D85ESS-2 bulldozer, with particular emphasis on the 1000 hours meter (HM) service stage. A case study approach was conducted at PT United Tractors, Tbk., Sampit Branch, through field observation and maintenance documentation analysis. The results indicate that maintenance activities are distributed progressively across service intervals, with the highest proportion occurring at 250 HM (44.4%), followed by 1000 HM (37.0%). The 250 HM interval functions as an intensive preventive inspection stage focused on lubrication, inspection, and condition monitoring, while the 1000 HM interval represents major preventive maintenance dominated by fluid replacement, system cleaning, and critical component inspection. These activities play a significant role in controlling contamination, reducing wear, and maintaining unit reliability. The findings highlight that maintenance effectiveness depends on the integration of all service intervals within a structured hours meter-based maintenance system to ensure operational efficiency and extend component service life.