Marine · Power Generation

Caterpillar engine service
at the port of Yeosu, Korea

SAMSUN Engineering Co., Ltd is a Caterpillar-authorized service and parts partner for marine and land applications. Based in Yeosu since 1990, we overhaul and maintain Cat main engines, auxiliary engines and generator sets, and supply genuine Cat parts.

Email an enquiry → Marine services

Cat engine in a vessel engine room · SAMSUN service site

About SAMSUN

35 years on Cat engines, on land and at sea

SAMSUN Engineering Co., Ltd was founded in Yeosu in 1990 and has worked under Caterpillar authorization since 1995, in partnership with HAEIN Corporation, the Cat dealer in Korea. Our technicians are trained to Caterpillar procedures and use Cat diagnostic tools (Cat ET) and S·O·S fluid analysis.

On land we supply, install and maintain Cat diesel generator sets for petrochemical, steel, power and public-sector sites. At sea we service main engines, auxiliary engines and generators on government vessels and commercial ships — and we apply the same procedures to vessels calling at Yeosu and Gwangyang.

CompanySAMSUN Engineering Co., Ltd (㈜삼선엔지니어링)
Founded1990, Yeosu, Republic of Korea
CaterpillarAuthorized service & parts partner since 1995 · marine authorized maintenance & parts partner (AMD)
CertificationsISO 9001 · ISO 14001 · ISO 45001 · licensed electrical contractor
Location919 Jwasuyeong-ro, Yeosu — near the ports of Yeosu and Gwangyang, south coast of Korea
LanguagesKorean · English (email)

Marine Services

Main engines, auxiliary engines and marine generators

Disassembly, overhaul and parts replacement by application area. Each job starts with a diagnosis so the scope is agreed before work begins; the work and the parts replaced are documented for the owner.

Main engine overhaul

Disassembly and overhaul of propulsion engines: measurement of worn components, replacement of consumables, reassembly to Caterpillar specifications and sea trial.

Top and major overhaul
Cylinder liners, pistons, bearings
Sea trial after reassembly

Vessel engine room — auxiliary engine and exhaust piping

Auxiliary engines

Inspection and repair of auxiliary engines driving pumps, hydraulics and deck machinery. Scope is set from running hours and condition data, not by a fixed menu.

Condition-based scope
Scheduled maintenance
Consumable replacement

Marine generator electrical check with a multimeter

Marine generator sets

Scheduled inspection, repair and parts replacement for ship's-service generators. Engine and alternator are checked together.

Engine and alternator inspection
Preventive maintenance
Electrical and control checks

Genuine parts & sourcing

Genuine Cat parts through the Caterpillar dealer network. For discontinued or long-lead items we can review in-house manufacturing of replacement parts.

Genuine Cat parts
In-house replacement parts (case by case)
On-board replacement

How We Work

Diagnosis first, then a scope you can approve

Six steps from diagnosis to handover. Measurements, parts replaced and trial results are recorded and handed over with the vessel.

Diagnosis

Running condition and fault codes (Cat ET), S·O·S fluid analysis

Disassembly

Open the affected area and inspect internally

Measurement

Wear and dimensional checks, parts assessment

Repair & parts

Repair or replace according to the agreed scope

Reassembly

To Caterpillar specifications, incl. alignment

Trial & handover

Sea trial, then the service record

Cat engine display showing coolant temperature, rpm and oil pressure — 01 — Running data checked on the Cat display and with Cat ET before any work is scoped.

Replacement cylinder liners for a main engine overhaul — 02–04 — Cylinder liners and other wear parts measured and replaced within the agreed scope.

Shaft alignment measurement — 05 — Shaft alignment measured at reassembly and brought to specification.

Vessel calling at Yeosu · SAMSUN site photo

Vessels Calling at Yeosu

Cat-powered vessels in Yeosu and Gwangyang

Foreign-flagged vessels with Caterpillar engines or generators can get Cat-standard service and genuine parts while alongside at Yeosu or Gwangyang, through the Caterpillar dealer network. To let us prepare before arrival, please include the following in your email:

Vessel name, flag and agent at Yeosu/Gwangyang
Engine model and serial number (engine plate photo is ideal)
ETA and berth, and how long the vessel stays
The issue: fault codes, symptoms, running hours, last overhaul

Email vessel details →

Track Record

Government vessels, research ships and commercial fleets

Since 1990 we have serviced main engines, auxiliary engines and generators on patrol boats, pollution-response vessels, fisheries guidance vessels, fireboats and research ships, as well as tugs, fishing and shipping-company vessels.

Coast Guard

Korea Coast Guard

Main engine service on patrol and pollution-control vessels of the Yeosu, Mokpo and West Sea regional headquarters.

Fisheries

Ministry of Oceans and Fisheries

Engine repair on fisheries guidance vessels, government service vessels and port patrol boats.

Customs

Korea Customs Service

Main engine service and parts supply for customs surveillance boats at Yeosu and Gunsan.

Fire & Rescue

Fire services (Jeonnam · Yeosu)

Main engine and parts service on fireboats.

Research

Korea National Park Service

Marine research vessels: main engine, heat exchangers and engine control modules.

Environment

Korea Marine Environment Corporation

Main engine and generator service on pollution-response vessels.

Cat models serviced

C28031163126330433063406E34083412350835123516 / 3516BC9C15C18C32CumminsMANMTUYanmar and others

Our overhaul experience extends to the Cat C280, the largest engine in the Caterpillar marine range (around 7,600 hp), so we cover everything from small auxiliary engines to large propulsion engines.

Plate heat exchanger cleaning — Plate heat exchanger stripped and cleaned plate by plate.

Cat engine heat exchanger reassembly — Heat exchanger reassembled and leak-checked.

Marine generator check on board with diagnostic equipment — On-board generator check with diagnostic equipment connected.

Customs surveillance boat on a slipway for engine service — Customs surveillance boat on the slipway for engine and shafting work.

* Cumulative marine service jobs. Details by owner, vessel type and scope are available on request. Photos are from SAMSUN service work.

Power Generation

Cat generator sets on land

The same team supplies, installs and maintains Cat diesel generator sets for industrial and public-sector sites — petrochemical and steel plants, power stations and public buildings — including scheduled inspection, emergency call-out, fire-pump diesel engines and rental generators. Our land customers include POSCO, LG, Hanwha, Lotte and Kumho group companies and Korea's public power utilities.

Details of these services are on the Korean site; email us for an English summary.

Cat diesel generator set maintenance on site

Contact

Email is our channel for overseas enquiries

Please write to us in English. Our office hours are 08:00–18:00 KST (UTC+9), Monday to Friday. For a vessel calling at Yeosu or Gwangyang, send the engine model and serial number, ETA and a description of the issue so we can prepare before arrival.

samsun3618@hanmail.net

Engine or generator model and serial number
Vessel name, ETA and berth, or site location on land
Fault codes, symptoms and running hours
Parts: Cat part numbers if known, or an engine plate photo

Company: SAMSUN Engineering Co., Ltd
㈜삼선엔지니어링
Email: samsun3618@hanmail.net
Address: 919 Jwasuyeong-ro, Yeosu, Jeonnam
Republic of Korea (59635)
Map: Google Maps · Naver Map
Hours: Mon–Fri 08:00–18:00 KST (UTC+9)
Korean site: www.samsuneng.co.kr

Caterpillar engine serviceat the port of Yeosu, Korea