Jonnifer Legaspi
Manila
Summary
Experienced Locomotive Technician with over 10 years in mechanical repairs and maintenance. Skilled in using diagnostic tools to identify and resolve mechanical failures, enhancing locomotive efficiency and minimizing downtime through effective preventive maintenance. Focused on upholding safety protocols and compliance standards.
Overview
17
17
years of professional experience
2
2
Certifications
Work History
SENIOR LOCOMOTIVE MECHANICAL TECHNICIAN
SAUDI ARABIA RAILWAYS
Nariyah
04.2024 - 11.2025
- Conducted full overhauls on SD70ACs locomotives powered by EMD 710 engines.
- Diagnosed and resolved various mechanical issues to ensure optimal performance.
- Managed preventive and corrective maintenance schedules, ensuring timely part replacements for optimal locomotive functionality.
- Performed general inspections of locomotives to maintain safety standards.
- Supervised junior technicians, fostering adherence to quality and safety protocols to enhance team performance.
- Executed turbo replacements, compressor repairs, and cooling system maintenance to ensure reliable locomotive operations.
- Replaced mechanical pumps and conducted crankshaft bearing replacements according to schedule.
LOCOMOTIVE MECHANICAL TECHNICIAN
SAUDI ARABIA RAILWAYS
N
08.2015 - 03.2024
- Conducted daily inspections and performed corrective maintenance on fleet EMD locomotives.
- Executed general and engine-specific inspections, identifying issues to maintain optimal locomotive performance.
- Maintained airbrake system and repaired cooling system, addressing internal and external leaks.
- Performed engine power pack replacements and adjusted exhaust valves to enhance operational efficiency.
- Executed injector timing adjustments to enhance engine performance.
- Replaced radiators according to maintenance schedule to prevent overheating issues.
- Managed SD70ACe (16-cylinder, 4500 HP) and GPL38-2 (8-cylinder, 2000 HP) electro-motive diesel engines, ensuring reliable functionality.
TRAIN MECHANIC A
PHILIPPINE NATIONAL RAILWAYS
Manila
01.2014 - 07.2015
- Conducted regular maintenance checks on light engine oil, compressor oil, coolant, and brake operation.
- Performed disassembly, repair, replacement, reassembly, and lubrication of mechanical and pneumatic equipment.
- Inspected train bodywork, roof, and undercarriage for wear, tear, or damage.
- Executed brake system maintenance through inspection, adjustment, and testing of brake components to ensure safety and reliability.
- Checked cowcatcher for damage and ensured proper lubrication of gear case and traction motor brushes.
- Overhauled and replaced parts per scheduled maintenance plans to maintain optimal locomotive performance.
- Conducted comprehensive inspections of locomotives to verify operational readiness and compliance with safety standards.
TRAIN MECHANIC B
PHILIPPINE NATIONAL RAILWAYS
Manila
05.2009 - 12.2013
- Executed comprehensive brake system maintenance, inspecting and adjusting underframe brakes, rods, brake shoes, coil springs, air pipelines, and brake cylinders to enhance reliability.
- Performed regular maintenance checks on braking systems and mechanical couplings to ensure optimal performance and safety.
- Performed disassembly, repair, replacement, rebuilding, reassembly, installation, adjustment, alignment, and lubrication on mechanical and pneumatic equipment.
- Inspected train bodywork, roofs, and undercarriages for wear, tear, or damage.
- Oversaw scheduled overhauls by systematically replacing components per maintenance plan to maintain operational standards.
Education
Automotive Servicing NC II -
CICOSAT COLLEGES
San Fernando, La Union03-2008
Skills
- Engine rebuilding
- Performance diagnostics and preventive maintenance
- Brake maintenance
- Crankshaft bearing replacement
- Shaft alignment
- Mechanical troubleshooting and root-cause analysis
- Quality assurance and quality inspection
- Work order interpretation
- Power tool operation
- Safety protocols and regulatory compliance
- Time management and adaptability
- Effective communication and attention to detail
Certification
National Certificate II
Technical Education and Skills Development
Authority (TESDA)
Technical Education and Skills Development
Authority (TESDA)
Timeline
SENIOR LOCOMOTIVE MECHANICAL TECHNICIAN
SAUDI ARABIA RAILWAYS
04.2024 - 11.2025
LOCOMOTIVE MECHANICAL TECHNICIAN
SAUDI ARABIA RAILWAYS
08.2015 - 03.2024
TRAIN MECHANIC A
PHILIPPINE NATIONAL RAILWAYS
01.2014 - 07.2015
TRAIN MECHANIC B
PHILIPPINE NATIONAL RAILWAYS
05.2009 - 12.2013
Automotive Servicing NC II -
CICOSAT COLLEGES