LAPORAN TUGAS AKHIR - ANALISIS KERUSAKAN

LAPORAN TUGAS AKHIR - ANALISIS KERUSAKAN ELECTRIC
CONTROL LEVER
ABSTRACT
Electric control lever is one of the main components of the excavator.
Electric control lever is part of a control system that serves to control the motion
of upper structure (swing) and a front attachment (boom, arm, and bucket). The
main components of the electric control lever consist of grip, reaction spring,
confines restriction plate, harness and potentiometer (variable resistor). If the
electric control lever fails to operate, it will interfere with the performance of the
excavator.
The process of observations made to determine the failure of electric
control lever is to look at the display monitor in the cabin excavator EX 2500-6.
From the process of dismantling electric control lever and analysis, show that the
cause of the malfunction of electric control lever plate restriction caused by wear
and tear, damage the potentiometer (variable resistor), damage to the cable
connectors and AMP ELU. After replacement of units that were damaged, and
then the unit is tested.
To prevent malfunction of electric control lever, then the maintenance can
be done by carrying out checks adequacy of grease on the shaft mechanism and
the restriction plate, checking the wear on shaft mechanism and confinesrestriction plate, checking pin and lock connector of rust, loose or warped and
checking connectors damage / rupture.
Keywords: excavators, electric control lever, maintenance
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LAPORAN TUGAS AKHIR - ANALISIS KERUSAKAN ELECTRIC
CONTROL LEVER
INTISARI
Electric control lever adalah salah satu komponen utama excavator.
Electric control lever merupakan bagian dari sistem control yang berfungsi untuk
mengontrol gerak upperstructure (swing) dan front attachment (boom, arm,
bucket). Komponen utama dari electric control lever terdiri dari grip, reaction
spring, confines restriction plate, harness dan potensiometer (variable resistor).
Apabila electric control lever gagal beroperasi, maka akan mengganggu kinerja
excavator.
Proses pengamatan yang dilakukan untuk menentukan kegagalan electric
control lever adalah dengan memperhatikan monitor display pada kabin excavator
EX 2500-6. Dari proses pembongkaran electric control lever dan analisis
diketahui bahwa penyebab kegagalan fungsi electric control lever diakibatkan
oleh keausan restriction plate, kerusakan potensiometer (variable resistor),
kerusakan konektor dan kabel ELU AMP. Setelah dilakukan penggantian unit
yang mengalami kerusakan, kemudian dilakukan pengujian.
Untuk mencegah terjadinya kegagalan fungsi electric control lever, maka
perawatan dapat dilakukan dengan melaksanakan pengecekan kecukupan grease
pada shaft mechanism dan restriction plate, pengecekan keausan pada shaft
mechanism dan confines-restriction plate, pengecekan pin dan lock connector dari
karat,
longgar
ataupun
melengkung
dan
pengecekan
konektor
dari
kerusakan/pecah.
Kata kunci : excavator, electric control lever, perawatan
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