Having the right parts and the care of the experts can bring out the best performance of your unit.
From installation to emergency repair to general overhaul, JEFRA can customize your service requirement without sacrificing our service standards.
Excellence is our standard. Our expertise is your security.
An overhaul is a process where the unit is completely disassembled and all parts, including bearings and major parts are inspected, cleaned and/or replaced depending on its condition. On marine transmission, it is usually done after 5,000-10,000 running hours.
While our units are designed for heavy duty performance and with the proper maintenance it can withstand the test of time and even the most challenging operations, an overhaul is still necessary to extend the life of the unit thus maximizing its cost-effectiveness.
Marine transmission reconditioning involves almost the same process with overhauling but only involves wear-and-tear parts and to eliminate or minimize any vibration while unit is on operation.
Alternator and motor reconditioning involves a thorough cleaning and inspection of the external and internal parts of the unit including all its wirings to ensure that insulation protections are still intact.
The schedule of reconditioning primarily depends on outside factors like humidity and dust particles.
Repair is the process of restoring the equipment to its proper running condition. It usually covers work done in an urgent manner like On-Board Emergency repair.
Rewinding is the process of removing and replacing coils that are shorted, grounded or otherwise damaged. Common reason for an alternator or motor to require rewinding is insulation failure like thermal deterioration caused by insulation overheats due to poor connection, excessive load demands or excessive reversals and starts.
Commissioning after unit installation is the process of assuring all systems and components of the equipment are installed and tested in accordance with the established operational guidelines.
Testing is divided into 2 phases:
Preventive Maintenance is performed mainly for the following reasons:
When to schedule Preventive Maintenance?
Standard Preventive Maintenance Procedures:
Note: Sealed-for-life pilot bearing should not be lubricated during service, damage to engine crankshaft could result from trapped grease pressure.
Standard wear-and-tear parts such as gaskets, oil seals, o ring, pistons rings, etc. are not covered by warranty.
Likewise, electrical replaceable parts such as Automatic Voltage Regulator (AVR), diodes, varistors, etc. are not warrantable.
For complete warranty information, click any of the following:
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