Description
Vehicle Compatibility & Applications
This Lucas / Lucas TVS 12V alternator voltage regulator is designed for TATA commercial vehicles using Lucas TVS alternators with an internal regulator and external fan. It suits applications where the original regulator has the same layout and charging characteristics and the system uses an inactive charge lamp control.
- Reference: REG4014
- Applications: TATA 4-cylinder engines; TATA 6-cylinder engines
- Typical models: TATA 509M; TATA 713S and related TATA trucks using Lucas TVS alternators
- Alternator brand: Lucas / Lucas TVS (India)
- Specification note: Inactive lamp type regulator matched to OE charging system
Always compare the alternator label, mounting style and plug / brush arrangement on your existing unit before fitting REG4014 to a TATA application.
Specifications
- Reference: REG4014
- Part type: Alternator voltage regulator
- System voltage: 12V
- Operating voltage: 14V
- Charging voltage: approx. 14.3V (VS ≈ 14.0V)
- Manufacturer type: Lucas / Lucas TVS – India
- Circuit regulator: A-circuit
- Type: IR / EF (internal regulator, external fan)
- Lamp specification: Inactive lamp control
- Primary usage: TATA 4-cylinder and 6-cylinder trucks including 509M and 713S
- Function: Regulates alternator output voltage and field excitation to protect the vehicle’s electrical system
Features
- Lucas TVS style 12V alternator voltage regulator for TATA truck applications
- Internal regulator with external fan configuration matched to common TATA alternators
- A-circuit design compatible with OE TATA charging system wiring
- Inactive lamp specification for correct interaction with the dashboard charge indicator
- Durable OEM-style construction ideal for commercial and fleet use
Why Buy From Us
- Local stock on popular TATA charging components like REG4014 for reduced downtime
- Standard 12 month warranty under normal operating and installation conditions
- Fitment assistance using alternator labels, photos and vehicle details
- Secure online ordering with reliable courier delivery to workshops and fleets nationwide
- Trusted by truck workshops and fleet operators for dependable alternator parts
Installation & Maintenance Tips
- Disconnect the vehicle batteries before removing or installing the alternator or regulator.
- Confirm that your alternator is a Lucas / Lucas TVS unit with matching layout and TATA application before fitting REG4014.
- Inspect slip rings, brushes and internal wiring for wear or overheating when replacing the regulator.
- Check all main power and earth cables for clean, tight connections to avoid voltage drop and charging faults.
- After installation, test charging voltage at the batteries under load to confirm correct regulation.
- For commercial vehicles and fleet applications, have the charging system load-tested by a qualified auto electrician.
Important: Product information, kit contents and compatibility are provided as a guide and may contain errors or omissions. Please verify that this part and any included components are correct for your vehicle before installation. For full details see our Website Disclaimer (Errors & Omissions).