Analisis Penyebab Error Ca559 pada Excavator Komatsu Pc200-8m0 Melalui Evaluasi Kebocoran Injector Sistem Common Rail
Abstract
Error CA559 on the Komatsu PC200-8M0 excavator is an indication of a drop in pressure in the common rail fuel system that can cause combustion failures, decreased engine performance, and increased emissions. This study aims to analyze the main causes of CA559 errors through a thorough evaluation of the condition of the fuel system, especially the injector components. The research methods include field observation, operator interviews, visual examinations, cut-out tests, as well as return flow measurements of injectors and supply pumps based on manufacturer's standards. The measurement results showed that the number 6 cylinder injector had a return flow value of 500 cc/min, far exceeding the standard limit of 180 cc/min, indicating a significant internal leakage. This condition causes unstable rail pressure, incomplete combustion, engine vibration, and the appearance of black smoke. Evaluation of other components such as inlet pressure, pressure limiter, and return supply pump shows that the results are still within normal limits. Thus, it can be concluded that the main cause of the CA559 error is an internal leak in injector number 6. Replacement of injectors and improved fuel quality control are recommended to prevent the recurrence of similar disturbances.
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References
Komatsu produk PC 200-8M0 (https://www.komatsu.jp/en/worldwide/PDF/PC200_200LC8MO_ZESSP208M0EP-01.pdf, diakses 10 Mei 2024).
Masdiana, Irianto, Muhammad Yusril Raynonto, Andi Isdyanto, Muhammad Syarif Prasetia Adiguna Rustam, Jessica Chyntia, Suparjo, (2023). Perencanaan Produktivitas Alat Berat Bagi Pemula. Tohar Media.
PUTRA ALFIAN SUTARTO PUTRA, Harjono (2017). SISTEM KERJA DAN PROSES PERAWATAN MESIN DIESEL PADA EXCAVATOR PC 200-8M0 DI PT. UNITED TRACTORS Tbk (Doctoral dissertation, Universitas Gadjah Mada).
Shop Manual Komatsu PC 200-8 series Komatsu (2005). Komatsu ltd. Japan.
Shop Manual Komatsu PC 200-8M0 series Komatsu (2012). Komatsu ltd. Japan.
United Tractors. PT (2011). Basic mechanic course. Product Knowledge and Public Book. Jakarta
United Tractors. PT (2014). Basic Course I. Basic Maintenance. Jakarta.
UT school (2008). Basic course I. Yayasan Karya Bhakti United Tractors. Jakarta.
UT school (2008). Modul Basic Troubleshooting. Yayasan Karya Bhakti United Tractors. Jakarta.
Aljohani, B. S., Al-Haddad, A. M., & Qamar, S. (2022). Characterization of diesel solenoid injector rate of injection. Frontiers in Mechanical Engineering, 8, 1–12.
Bosch Automotive. (2021). Diesel common rail injector leak testing and return flow measurement: Technical bulletin.
Chen, Y., & Gao, Z. (2024). Effects of injector nozzle wear on diesel combustion and emissions. Fuel, 320, 123954.
Diesel Laptops. (2022). Common-rail injector return flow testing guide.
Fan, L., & Zhao, Y. (2025). Performance study of innovative multi-stage diesel injection strategies. Journal of Automobile Engineering, 239(1), 112–126.
Ferrari, A. (2024). Injected fuel mass and flow rate control in internal combustion engines. Energies, 17(4), 1–20.
Ferrari, A. (2025). The impact of common rail fuel injection systems on diesel engine performance and challenges. Energies, 18(2), 1–18.
Komatsu. (2022). PC200-8M0 Shop Manual: Fuel system, common rail, injector troubleshooting.
Komatsu. (2023). Troubleshooting manual: Error code CA559 (rail pressure low).
Li, R., Zhang, P., & Chen, X. (2025). Dynamic response characteristics of diesel injector needle motion in high-pressure fuel systems. Journal of Mechanical Science and Technology, 39(1), 55–70.
Liu, Y., & Song, W. (2021). Investigation of multi-hole injector degradation using return flow measurements. Journal of Energy Engineering, 147(4), 04021032.
Martínez, M., López, D., & Ramos, A. (2025). Transient nozzle flow and spray behavior in diesel injectors. International Journal of Engine Research, 26(2), 201–215.
Martino, X., Hansen, L., & Pedersen, J. (2024). Assessment of flow meter accuracy for dynamic diesel injection measurements. Journal of Physics: Conference Series, 2602(1), 1–10.
Miao, X., & Zhou, R. (2024). Flow analysis of a control ball valve in a common-rail fuel injection system. Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering, 238(7), 1234–1247.
Pach Aige, M. (2024). Investigation of internal diesel injector deposits and their effect on injection performance (Master’s thesis). KTH Royal Institute of Technology.
Park, S., & Kim, J. (2025). Comparative analysis of injection rate and spray characteristics for modern diesel nozzles. Fuel, 368, 128500.
PlusQuip. (2023). Diesel common-rail injector return flow tester: User manual.
Santos, D., & Moreira, R. (2022). Impact of low-quality diesel fuel on injector performance and common-rail pressure stability. Energy Reports, 8, 1123–1135.
Sinocmp. (2024). How to clear fault code CA559 on Komatsu PC200-8. https://www.sinocmp.com
Singh, R., & Patel, H. (2021). Failure analysis of high-pressure diesel injectors due to contaminated fuel. Engineering Failure Analysis, 127, 105218.
Technical Repair Journal. (2023). Causes of diesel injector leakage and recommended diagnostic methods. https://www.trj-diesel.com
Wang, H., & Liu, M. (2024). Simultaneous measurement of gas needle lift and fuel injection rate in common-rail diesel injectors. Measurement, 227, 112012.
Yamada, H., & Fujita, T. (2023). Evaluation of diesel injector internal leakage using advanced return-flow testing. SAE Technical Paper 2023-01-1122.
Zhang, Q., & Li, D. (2023). Experimental study on injector wear and its effect on combustion quality in diesel engines. Applied Energy, 335, 120765.
Zhao, P., & Hu, L. (2023). Model-based reliability evaluation of common-rail fuel systems under injector degradation. Reliability Engineering & System Safety, 234, 109181.
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