Basic Inspection & Servicing
Routine inspection after delivery or entry into service to ensure operational readiness and detect early degradation.
30 days
12500 km
SCOPE
- Visual inspection of key systems
- Fluid top-ups (oil. coolant. sand)
- Functional checks
- Minor adjustments
Inspection Maintenance Level 1
Basic routine preventive inspection focused on wear components and safety assurance.
3.6 months
45000 km
SCOPE
- Brake inspection
- Door operation check
- HVAC functional check
- Safety systems verification
1-Year Inspection
Annual preventive maintenance. Detailed. in-depth inspection to assess condition and plan corrective actions.
1 year
150000 km
SCOPE
- Detailed mechanical inspection
- Electrical testing
- Diagnostic downloads
- Component condition assessment
Inspection Maintenance Level 2
Intermediate inspection. more detailed than IM1. Preventive oil replacement to ensure gearbox performance and durability.
1.2 years
180000 km
SCOPE
- Oil draining and refill
- Leak inspection
- Gearbox condition check & oil replacement
2-Year Inspection
Biennial maintenance with extended inspection including deeper component verification.
2 years
300000 km
SCOPE
- Bogie inspection
- Brake system checks
- Electrical cabinet inspection
- Structural checks
Inspection Maintenance Level 3
Advanced inspection with partial disassembly. Maintain air system efficiency and reliability.
2.4 years
360000 km
SCOPE
- Replacement of compressor filters
- Air system inspection
- Functional test
Inspection Maintenance Level 4
Major periodic inspection. Overhaul of core running systems (running gear and axle) to ensure safety and performance.
4.8 years
720000 km
SCOPE
- Guidance system overhaul
- Motor and trailer bogie overhaul
- Structural inspection
8-Year Overhaul
Comprehensive overhaul of main onboard systems; electrical and pneumatic.
8 years
1200000 km
SCOPE
- Main transformer overhaul
- compressor overhaul
- Air dryer servicing
- Auxiliary cabinet overhaul
- Safety valve checks
- Wheel flange lubrication systems
Wheelset Overhaul
Restore wheel profile and axle condition.
8 years
1200000 km
SCOPE
- Wheel replacement
- Axle inspection
- Bearing Replacement
- NDT testing
Revision. Major overhaul of systems and components.
Full bogie overhaul restoring structural and functional integrity.
9.6 years
1440000 km
SCOPE
- Frame overhaul
- Suspension components
- Traction motor overhaul
- Brake rigging
- Electrical & pneumatic installations
- Third rail/pantograph collection equipment
10-Year Overhaul (life-cycle major maintenance)
Ensure braking and roof-mounted systems reliability.
10 years
1500000 km
SCOPE
- Brake system overhaul
- Pantograph service
- Circuit breaker inspection
- Couplers overhaul (automatic & semi-permanent)
- Intercommunication systems
12-Year Overhaul (extended heavy maintenance cycle)
Renewal of critical auxiliary systems affecting comfort and safety.
12 years
1800000 km
SCOPE
- HVAC systems (saloon & cab)
- Battery charger
- WC module overhaul
- Mirrors and auxiliary converters
- Pantograph lowering system
15-Year Overhaul (deep refurbishment or mid-life overhaul)
Refurbishment of passenger and driver environments; interior and driver desk overhaul.
15 years
2250000 km
SCOPE
- PRM ramp overhaulDriver desk refurbishmentInterior doorsCab exterior doorsSteps and radiators
Second Wheelset Overhaul
Second lifecycle overhaul of wheelsets.
16 years
2400000 km
SCOPE
- Full wheelset overhaulBearing replacementAxle inspection
Second Revision (second major overhaul cycle)
Deep overhaul of supporting systems.
19.2 years
2880000 km
SCOPE
- Flange lubrication systemsACR equipment fansAuxiliary converter ventilation
20-Year Overhaul (life extension / full refurbishment)
Overhaul of braking control interface for reliability.
20 years
3000000 km
SCOPE
- Direct brake control panel overhaul
- Functional calibration
- Safety checks
Fourth Revision (multiple overhaul cycle)
Long-term overhaul of main high-voltage protection system.

