12V 280W Regulator Rectifier 119640-77710 119653-77710 for Yanmar & Komatsu Engines
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Compatible Models
We do our best to list all compatible models. Although this may be the part you need, your exact model may not appear below.
| Yanmar | 3TNE74, 4TNV98 and related compact diesel applications |
|---|---|
| Komatsu/Yanmar engines | 2D68E, 2D70E, 3D68E, 3D72, 3D74E, 3D75, 3D78 |
Product Overview
The regulator rectifier converts and controls charging output so the battery receives usable DC voltage without being overcharged. A failed unit can show up as a battery that never recovers, charging voltage that climbs too high, blown bulbs or erratic electrical behavior.
This version is rated for a 12V, 280W charging system and is used with several compact Yanmar and Komatsu engine families. Match the connector, mounting pattern and reference number before ordering.
Key Features & Performance
- 12V charging-system regulator/rectifier
- 280W rating
- Controls charging voltage and rectifies alternator output
- Cross-references 119640-77710 and 119653-77710
Replaces Part Numbers
- 119640-77710
- 119653-77710
Technical Specifications
- System voltage: 12V
- Rated output: 280W
- Component: Regulator rectifier
Frequently Asked Questions
Q: What are common regulator/rectifier failure symptoms?
A: Low charging voltage, repeated dead batteries, overcharging and unstable lighting are common signs after the stator and wiring are checked.
Q: What must match before installation?
A: Match the 12V/280W rating, reference number, connector and mounting arrangement.
Fitment can vary by serial number, production date, engine configuration or prior repairs. Verify compatibility using the part numbers and application details listed above before ordering.