HEHM
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Other
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Professional Development
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Practice Problem
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Aris Susanto
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56 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Udara yang tercampur di dalam oli hydraulic dapat menebabkan:
oli hydraulic menjadi cepat dingin
hilangnya lapisan oil film pada permukaan komponen hydraulic
oil hdaulic menjadi cepat encer
hydraulic drift mekebihi standard
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Tindakan bodoh yang harus dihindari ketika mengganti return oil filter adalah:
Angkat element perlahan – lahan agar kotorannya tidak jatuh ke dalam housing filter
Angkat element dengan cepat agar unit segera RFU
Bersihkan setiap permukaan dan bagian dalam housing filter
Ganti O-ring pada oil filter cap
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Pada proses pemasangan oil filter pastikan posisi element terhadap housing sudah benar.
Berikut beberapa cara untuk memastikannya, yaitu:
Posisi element tegak lurus terhadap housing filter
Posisi element tegak lurus terhadap housing filter, dan tidak seret kalau diputar
Posisi element bebas, yang penting pengerjaanyacepat supaya unit segera RFU
Posisi element bebas, yang penting oil tidak bocor keluar
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Sebelum melepas sambungan hydraulic baik yang berupa pipa atau hose, perlu menggerak – gerakkan lever hydraulic sesaat setelah engine dimatikan. Hal ini bertujuan untuk:
Menghilangkan sisa-sisa flow di dalam system hydraulic
Menghilangkan sisa-sisa pressure di dalam system hydraulic
Menghilangkan sisa-sisa getaran di dalam system hydraulic
Sengaja, biar terkesan kerjanya serius.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Bahaya apakah yang mungkin dapat terjadi jika sebelum melepas sambungan hydraulic tidak menggerak – gerakkan lever hydraulic sesaat setelah engine dimatikan:
Tersembur air radiator
Tersembur oil pressure
Kejatuhan attachement
Jawaban salah semua
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Mengapa oil hydraulic perlu di flushing secara periodic:
Sekedar melaksanakan perintah atasan
Agar clean lines oil tetap terjaga
Agar kekentalan oil tetap terjaga
Agar kemurnianoil tetap terjaga
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Proses bleeding setelah penggantian hose hydraulic cylinder, dilakukan dengan cara:
Mengisikan oil bersih ke dalam pump
Menggerakkan perlahan-lahan cylinder hydraulic naik–turun 4 – 5 kali.
Mengisikan oil ke dalam cylinder
Tidak perlu bleeding karena udaranya akan keluar sendiri melalui breather
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