Analisa Kerusakan “Premature Failure” pada Komponen Transmisi HD785-7 Di PT. XYZ = Analysis of "Premature Failure" Damage to HD785-7 Transmission Components at PT. XYZ

Ismoyo, Ikhlas Satriaryo Budhi (2022) Analisa Kerusakan “Premature Failure” pada Komponen Transmisi HD785-7 Di PT. XYZ = Analysis of "Premature Failure" Damage to HD785-7 Transmission Components at PT. XYZ. S1 thesis, Universitas Kristen Indonesia.

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Abstract

Komponen transmisi merupakan alat pemindah daya yang menerima daya dari engine yang menggunakan fluida oli sebagai pengontrolnya yang berfungsi untuk mengatur kecepatan gerak maju dan mundur serta meningkatkan torsi dengan cara mereduksi putaran melalui planetary gear yang selanjutnya digunakan untuk menggerakkan roda belakang untuk gerak maju maupun mundur. Analisa ini bertujuan untuk mengidentifikasi penyebab terjadinya premature failure serta melakukan langkah perbaikan dan pencegahan kerusakan pada komponen transmisi dump truck HD785-7.Pemeriksaan dilakukan dengan melakukan pemeriksaan secara visual pada strainer transmisi, menganalisa hasil PAP dan PPM, overhaul komponen transmisi, serta performance test. Hasil analisa kerusakan diketahui bahwa sumber kerusakan adalah part OEM disc transmisi yang mengalami abnormal worn out pada umur 1553 jam, sehingga part OEM disc tersebut mengalami kerusakan lebih cepat dari target umur 25000 jam. Langkah perbaikan dilakukan dengan cara melakukan peningkatan material part OEM disc untuk menggantikan part OEM disc yang rusak. Langkah pencegahan dilakukan dengan cara melakukan periodical service, program pemeriksaan mesin (PPM), dan program analisa pelumas (PAP) secara berkala. / The transmission component is a power transfer device that receives power from the engine that uses oil fluid as its controller which functions to regulate the speed of forward and backward motion and increase torque by reducing rotation through planetary gear which is then used to drive the rear wheels for forward and backward motion. This analysis aims to identify the causes of premature failure and take steps to repair and prevent damage to the transmission components of the HD785-7 dump truck. The inspection is carried out by visually inspecting the transmission strainer, analyzing the results of PAP and PPM, overhauling transmission components, as well as performance tests. The results of the damage analysis showed that the source of the damage was the OEM disc transmission part which experienced abnormal worn out at the age of 1553 hours, so that the OEM disc part was damaged faster than the target age of 25000 hours. Repair steps are carried out by increasing the material for the OEM disc part to replace the damaged OEM disc part. Preventive measures are carried out by conducting periodical service, machine inspection program (PPM), and lubricant analysis program (PAP) periodically. The improvement of OEM disc material can reduce the wear rate that occurs on the transmission components thereby increasing the unit's performance.

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