Factors in Maintenance Spare Parts Management Affecting the Operational Efficiency of the Maintenance Department at Thai Suzuki Motor Co., Ltd., Pathum Thani Province

Abstract

This research article aims to: (1) examine the level of spare parts management in the Maintenance Department of Thai Suzuki Motor Co., Ltd., Pathum Thani Province; (2) examine the level of work performance of the Maintenance Department; and (3) analyze the factors of spare parts management influencing the work performance of the Maintenance Department of Thai Suzuki Motor Co., Ltd., Pathum Thani Province. This study employed a mixed methods research design, using quantitative research as the primary approach and qualitative research to explain the statistical results. Inventory Management Theory and Maintenance Management Theory were applied as the conceptual framework. The research area was the Maintenance Department of Thai Suzuki Motor Co., Ltd., Pathum Thani Province. The quantitative research sample consisted of 92 maintenance employees, selected through stratified random sampling based on job positions. Three research instruments were used: (1) a questionnaire, (2) in-depth interview guidelines, and (3) focus group discussion guidelines. Quantitative data were analyzed using descriptive statistics, correlation analysis, and multiple regression analysis, while qualitative data were analyzed using content analysis and presented through descriptive narration.
The research findings revealed that: (1) the overall level of spare parts management in the Maintenance Department was at a high level; (2) the overall work performance of the Maintenance Department was also at a high level; and (3) inventory planning and control, spare parts information systems, and spare parts availability and adequacy had a statistically significant influence on the work performance of the Maintenance Department.
The knowledge gained from this study can be applied as a guideline for improving spare parts management systems to reduce machine downtime, enhance maintenance efficiency, and strengthen organizational competitiveness in the manufacturing industry.