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KH VENTURE ELECTRICAL (M) SDN. BHD.
KH VENTURE ELECTRICAL (M) SDN. BHD. 202501031352 (1632764-P)
Waktu
Pejabat
Isnin - Ahad 8:00 AM - 6:00 PM
Open Closed

Alternator Coupling Replacement

13-Sep-2025

Alternator Coupling Replacement

Preparation & Safety

  • Shut down the alternator and its prime mover completely.
  • Isolate electrical supply (lockout/tagout).
  • Allow equipment to cool if recently in operation.
  • Wear proper PPE (gloves, safety glasses, etc.).

Inspection

  • Check the existing coupling for wear, cracks, misalignment, or looseness.
  • Verify the type of coupling (flexible, rigid, gear, grid, etc.).

Alignment Check Before Removal

  • Measure and record the shaft alignment (dial gauge or laser alignment tool).
  • This ensures correct re-alignment after installation.

Removing Old Coupling

  • Loosen and remove the coupling bolts/nuts.
  • If tight, use a coupling puller or controlled heat (if allowed).
  • Avoid hammering directly on shafts to prevent bearing damage.

Preparing for Installation

  • Clean the shaft and keyway.
  • Inspect the shaft for scoring, pitting, or bending.
  • Lightly lubricate with oil or anti-seize compound.

Installing New Coupling

  • Mount the new coupling halves onto both shafts.
  • Insert the key (if keyway type).
  • Tighten bolts evenly in a criss-cross sequence.

Re-Alignment

  • Align shafts with dial indicators or laser tools.
  • Stay within manufacturer tolerances to avoid vibration.

Final Checks

  • Torque bolts to specified values.
  • Rotate shafts by hand to confirm smoothness.
  • Reattach safety covers/guards.

Testing

  • Run the alternator at no load first.
  • Monitor for vibration or noise.
  • Gradually apply load and recheck alignment.

Penggantian Gandingan Alternator

Penyediaan & Keselamatan

  • Hentikan operasi alternator dan penggerak utama sepenuhnya.
  • Putuskan bekalan elektrik (lockout/tagout).
  • Biarkan peralatan sejuk jika baru digunakan.
  • Pakai PPE yang sesuai (sarung tangan, cermin mata keselamatan, dll.).

Pemeriksaan

  • Periksa gandingan sedia ada untuk haus, retakan, salah jajaran, atau longgar.
  • Sahkan jenis gandingan (anjal, tegar, gear, grid, dll.).

Pemeriksaan Jajaran Sebelum Tanggalkan

  • Ukur dan rekod jajaran aci (tolok dail atau alat laser).
  • Ini memastikan jajaran betul selepas pemasangan.

Mengeluarkan Gandingan Lama

  • Kendurkan dan keluarkan bolt/nat gandingan.
  • Jika ketat, gunakan penarik gandingan atau haba terkawal (jika dibenarkan).
  • Elakkan mengetuk terus pada aci untuk mengelak kerosakan galas.

Penyediaan Pemasangan

  • Bersihkan aci dan keyway.
  • Periksa aci untuk calar, kakisan, atau bengkok.
  • Gris sedikit dengan minyak atau sebatian anti-seize.

Pemasangan Gandingan Baru

  • Pasang separuh gandingan baru pada kedua-dua aci.
  • Masukkan kunci (jika jenis keyway).
  • Ketatkan bolt secara seimbang dengan corak silang.

Penjajaran Semula

  • Jajarkan aci menggunakan tolok dail atau alat laser.
  • Ikut toleransi pengeluar untuk elak getaran.

Pemeriksaan Akhir

  • Ketatkan bolt mengikut nilai tork yang ditetapkan.
  • Pusingkan aci dengan tangan untuk pastikan kelancaran.
  • Pasang semula penutup keselamatan.

Pengujian

  • Jalankan alternator tanpa beban terlebih dahulu.
  • Perhatikan sebarang getaran atau bunyi luar biasa.
  • Tingkatkan beban secara beransur-ansur dan semak semula jajaran.
Pejabat Utama

KH VENTURE ELECTRICAL (M) SDN. BHD. 202501031352 (1632764-P)
PTD 1513, No 33-A, Jalan Perindustrian Yayasan, Taman Perindustrian Yayasan, 85010 Segamat, Johor Darul Ta'zim, Malaysia.

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Laman Web: https://www.khventure.com.my
Laman Web: https://khventure.newpages.com.my/
Laman Web: https://khventure.onesync.my/

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