Part of the Kubota Repair Manuals.
This Kubota Workshop Manual covers the EGV01, EGV06, EGV08, and EGV09 electronic governor systems used on Kubota diesel engines. Its 39 pages focus on how the electronic governor is built, how it controls fuel and engine speed, and how to diagnose it when something goes wrong.
Inside you will find the governor construction and function, wiring diagrams, terminal layouts, a signal pattern sheet, and a diagnostic trouble code list for the EGV06 and EGV08 units. Component test procedures cover the speed sensor, coolant temperature sensor, actuator, alternator, and battery, each with the voltages and resistances you should measure.
This is factory reference material, publication number 9Y011-03014, aimed at technicians servicing the electronic governor rather than the whole engine. It downloads instantly as a PDF you can view on any device or print for the bench.
What's Inside This Manual
| System | Pages | Key Topics |
|---|---|---|
| Record of Revisions | 3-5 | |
| Safety | 6-10 | Working Precautions, Preparing for Emergencies, Working Cautions, Starting Machine Safely, Preventing Fires, Preventing Acid Burns, Avoiding High Pressure Fluid |
| Outline of Electronic Governor | 12 | Electronic Governor |
| Structure of Electronic Governor | 13-17 | Electronic Governor, Software Block Diagram, Component Parts, Control Unit, Speed Sensor |
| Function of Electronic Governor | 18-23 | Actuator, Electronic Governor, Fuel Control, Emergency Engine Stop, Failure Diagnosis, Circuit Protection, Smoke Reduce Control, CAN Communication (EGV06/EGV08) |
| Specification of Electronic Governor | 24-27 | Electronic Governor, Wiring Diagram, Terminal Layout (EGV01/EGV09), Terminal Layout (EGV06/EGV08) |
| Troubleshooting | 28-31 | Signal Pattern Sheet, Dtc List (EGV06/EGV08) |
| Diagnostic Procedure by Component | 32-37 | Checking Engine Speed Sensor, Checking Coolant Temperature Sensor, Checking Oil Pressure Switch, Checking Actuator, Checking Glow Plug Harness, Checking Alternator, Checking Speed Switch |
| Editor Information | 39 | Editor, Address, Phone, Fax, E-Mail, Kubota Corporation, Printed in Japan |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| All Models | ||
| ECU Tightening torque | 7.0 to 9.0 N·m | p. 17 |
| ECU Operating voltage range | 10 to 16 V | p. 17 |
| Engine speed sensor connector voltage (Terminal 1-Terminal 2) | 12 V | p. 32 |
| Engine speed sensor harness continuity | Less than 1.0 Ω | p. 32 |
| Coolant temperature sensor connector voltage (Terminal 1-Terminal 2) | 5 V | p. 33 |
| Actuator connector voltage (Terminal 1-Terminal 2) | 12 V | p. 34 |
| Speed switch resistance (ON position) | 0 Ω | p. 35 |
| Battery voltage | 12 V | p. 36 |
| EGV01/EGV09 | ||
| ECU Operating temperature, EGV01/EGV09 | -30 to 65 °C | p. 17 |
| EGV06/EGV08 | ||
| ECU Operating temperature, EGV06/EGV08 | -30 to 80 °C | p. 17 |
