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All Journal SINTEK JURNAL: Jurnal Ilmiah Teknik Mesin Prosiding Semnastek
ARMAS, REZA FEBRIANO
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Automotive Engineering Computer Science & IT Control & Systems Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

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Development of a Special Service Tool for Hydraulic Piston Maintenance on Excavator PC 210-10M0 Armas, Reza Febriano; Purwono, Hendro; Junaedi, Thomas; Alfauzi, Alfauzi; Santosa, Lintang Fuji
SINTEK JURNAL: Jurnal Ilmiah Teknik Mesin Vol. 18 No. 2 (2024): SINTEK JURNAL
Publisher : Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/sintek.18.2.121-128

Abstract

Excavators are essential machinery widely utilized in mining, construction, plantation, and other industries. The Komatsu PC210-10M0, a small-sized excavator model, performs critical operations such as material digging and transportation. However, during component overhauls, particularly for the boom cylinder, bucket, and arm, significant challenges arise due to the absence of suitable tools for efficiently removing and installing hydraulic cylinder pistons. The current reliance on generic tools such as screw wrench sets (L-keys) is suboptimal, leading to inefficiencies, increased risks of workplace accidents due to tool slippage, and longer processing times. This study addresses these limitations by employing the Seven Up++ method to develop a specialized service tool specifically designed for hydraulic cylinder piston maintenance. The methodology encompasses three critical phases: Analysis, Solution, and Results, ensuring a systematic and innovation-focused approach. The developed tool securely positions itself on the piston cylinder, utilizing two pins inserted into pre-existing holes on the piston surface. The results demonstrate significant improvements: maintenance processing time is reduced by up to 70%, operational safety is enhanced due to the tool's secure attachment, and labor requirements are halved, with manpower reduced from two operators to one. These findings highlight the tool's potential to optimize maintenance operations and improve overall efficiency in the use of Komatsu PC210-10M0 excavators.
Analysist Troubleshooting Suspension Too Hard On Unit Dump Truck Komatsu HD785-7 Lafah, Restu Karunia; Rasma, Rasma; Armas, Reza Febriano
Prosiding Semnastek PROSIDING SEMNASTEK 2025
Publisher : Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Penelitian ini dilaksanakan di PT United Tractors, site Tanjung Enim, Sumatera Selatan, dengan fokus pada analisa troubleshooting terhadap masalah suspensi terlalu keras pada unit dump truck Komatsu HD 785-7. Permasalahan ini sering dikeluhkan oleh operator karena menyebabkan getaran berlebih saat unit beroperasi di medan tambang yang tidak rata. Hal ini tidak hanya berdampak pada kenyamanan, tetapi juga berpotensi merusak komponen lain akibat distribusi beban yang tidak merata. Metode yang digunakan dalam kegiatan ini meliputi inspeksi visual, pemeriksaan sistem hidrolik, pengecekan tekanan nitrogen pada cylinder accumulator, serta observasi performa suspensi selama pengujian lapangan. Hasil analisa menunjukkan bahwa tekanan nitrogen pada suspensi depan maupun belakang berada di bawah standar spesifikasi pabrikan, sehingga menyebabkan suspensi kehilangan sifat elastisnya dan bekerja lebih kaku dari seharusnya. Setelah dilakukan pengisian ulang nitrogen sesuai dengan tekanan yang dianjurkan, dilakukan uji coba operasional untuk memastikan hasil perbaikan. Unit kembali menunjukkan performa suspensi yang normal dan kenyamanan operator meningkat signifikan. Kesimpulan dari kegiatan ini adalah bahwa pemeliharaan sistem suspensi, khususnya pengecekan tekanan nitrogen secara berkala, sangat penting untuk menjaga performa unit dan keselamatan kerja di lapangan.
Co-Authors Alfauzi, Alfauzi Junaedi, Thomas Lafah, Restu Karunia Purwono, Hendro Rasma Rasma Santosa, Lintang Fuji