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All Journal Rekayasa Mesin Jurnal Impresi Indonesia COMSERVA: Jurnal Penelitian dan Pengabdian Masyarakat
Halman, Halman
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Religion Humanities Economics, Econometrics & Finance Education Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Mechanical Engineering Social Sciences

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Pengaruh Variasi Sambungan pada Crash Box Multi Segmen terhadap Kemampuan Penyerapan Energi dengan Uji Quasi Static Halman, Halman; Choiron, Moch. Agus; Darmadi, Djarot B.
Jurnal Rekayasa Mesin Vol 9, No 1 (2018)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (411.487 KB) | DOI: 10.21776/ub.jrm.2018.009.01.7

Abstract

Along with the elevating number of cars, accidents due to car crashes are increasing. Therefore, technology is needed to reduce the occurrence of the drivers’ injuries. Crash box is one of the potential passive safety technology which is widely observed today. Crash box is installed between bumper and chassis, aims to reduce the cassualties when the car crashes. In this article, crash box research was conducted by real experimental method through quasi-static test to evaluate the energy absorption capability of circular-shaped multi-segment crash box. Crash box material was made from aluminum A6063. The connection on each segment is a chamfer with 45o angle. The connections between segments 1 and 2 were varied with 3 connection models, those are 1/4, 1/3 and 1/2 of the total length, i.e.120 mm. The results of the study showed that, the highest energy absorption obtained from the crash box with connection of 1/2 and the energy absorption is 5249.726 J. Crash box type of 1/4 and 1/3 exhibit energy absorption of 3886.238 J and 3106.027 J respectively. Generally, the deformation pattern on the crash box is mixed-mode (axisymmetric-diamond). 
Repair of the Starter Motor Unit of the 966 F Series II Cat Wheel Loader at the Ola Workshop in Nunukan Regency Amin, Al; Ramli, Ismail; Munir, Hamka; Halman, Halman
Jurnal Impresi Indonesia Vol. 4 No. 10 (2025): Indonesian Impression Journal (JII)
Publisher : Riviera Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58344/jii.v4i10.7105

Abstract

The starter system in heavy equipment plays a crucial role in initiating engine operation by converting electrical energy from the battery into mechanical energy through a direct current (DC) motor. This study focuses on the repair and troubleshooting process of the motor starter in the Caterpillar Wheel Loader 966 F Series II, which experienced engine-starting failure at the Ola Workshop, Nunukan Regency. The research aimed to identify the causes of malfunction and to determine the appropriate repair method to restore normal engine operation. The data collection methods included field observation, interviews with mechanics, and documentation. The results revealed that the failure was primarily caused by worn carbon brushes, with brush length reduced to less than the standard 10 mm, resulting in an interruption of electric current flow to the armature. To resolve this issue, the damaged carbon brushes were replaced with new ones of standard specification (10 mm). After replacement, the motor starter functioned properly, allowing the engine to start efficiently and operate normally. The study highlights the importance of preventive maintenance and periodic inspection of electrical components in heavy equipment to prevent downtime and maintain operational reliability. This research contributes to the practical understanding of motor starter repair procedures, particularly for wheel loaders operating in field conditions with high mechanical and environmental stress.
Troubleshooting Sistem Pengereman Pada Truck quester Ramli, Ismail; Wajilan, Wajilan; Halman, Halman; Amin, Al
COMSERVA : Jurnal Penelitian dan Pengabdian Masyarakat Vol. 4 No. 10 (2025): COMSERVA: Jurnal Penelitian dan Pengabdian Masyarakat
Publisher : Publikasi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59141/comserva.v4i10.2945

Abstract

Sistem pengereman adalah sistem yang sangat diperlukan oleh kendaraan termasuk alat berat, baik yang memiliki roda empat ataupun roda lebih dari empat. Sistem pengereman ini memiliki fungsi yang sangat penting untuk menghentikan laju kendaraan, maka kecelakaan akan bisa dihindari. selain itu ketika kita melewati jalan turunan, maka sistem pengereman inilah yang berfungsi untuk melambatkan laju kendaraan, apa bila tidak ada sistem pengereman ini tentu laju kendaraan kita tak bisa dikontrol, maka bisa membayangkan setiap pengendara unit tersebut. tujuan ini adalah untuk mengidentifikasi berbagai jenis kerusakan atau gangguan yang dapat terjadi pada sistem pengereman kendaraan, baik itu pada sistem mekanik, hidrolik, maupun elektronik. Ini meliputi masalah pada kampas rem, cakram rem, kaliper, dan sistem ABS (Anti-lock Braking System). Metode yang dilakukaun Melakukan uji coba kendaraan untuk mengukur kinerja sistem pengereman, seperti uji daya cengkeram dan uji jarak berhenti pada berbagai kondisi. penyebab kerusakan dari sistem rem angin pada truck Quester GKE 280, adalah dengan melakukan pembongkaran slack adjuster.
Co-Authors Amin, Al Djarot B. Darmadi, Djarot B. Moch. Agus Choiron Munir, Hamka Ramli, Ismail Wajilan, Wajilan