Specification Starting motor
Nominal output
12V
12V - 2.5kW
Alternator
Nominal output
12V
12V, 60A
Type Glow plug
Sheathed type
Voltage, amperage
12V
10.5V, 16.5A
Troubleshooting Trouble Starting motor does not turn, or turns too slowly to start the engine
Possible Cause Battery and related parts • Faulty contact of battery terminals • Faulty grounding of negative cable • Voltage drop caused by discharging • Insufficient voltage caused by faulty battery Engine switch (ignition switch) • Faulty contact on engine switch • Loose engine switch wiring and connectors • Broken wire between engine switch and magnetic switch Magnetic switch and related parts • Loose wiring and connectors • Faulty contact of magnetic switch contact plate • Broken wire of magnetic switch pull-in coil • Broken wire of magnetic switch holding coil Starting motor and related parts • Faulty contact of brushes • Fatigued brush spring • Faulty grounding of field coil • Faulty soldering of field coil • Faulty commutator • Faulty grounding of armature • Wear on parts
Action to be Taken • • • •
Clean and tighten Clean and repair Charge Charge
• Replace • Repair • Repair or replace • • • •
Repair Replace Replace Replace
• • • • • • •
Repair replace Replace Replace Repair Repair Replace Replace
Starting motor turns, but the engine does not start
Insufficient battery capacity Quick start system and related parts • Faulty glow plug relay control unit • Faulty glow plug relay • Faulty glow plug
• Charge
Starting motor turns, but pinion gear does not mesh with ring gear
• Tip of overrunning clutch pinion is worn • Raced overrunning clutch • Faculty sliding surface of spline • Worn bushing • Worn ring gear
• • • • •
Starting motor turns continuously and does not stop
• Sticking contact plate of magnetic switch • Layer short of magnetic switch coil • Engine (ignition) switch does not return properly
• Replace • Replace • Replace
Battery discharge
• • • • • • • • • •
• Adjust • Replace • Replace • Clean or replace • Replace • Replace • Adjust • Replace • Clean, tighten • Check power consumption
Overcharged battery
• Faulty IC regulator
D430 Diesel Engine
Loose V-belt Grounded or broken stator coil Broken rotor coil Faulty contact between brush and slip ring Faulty rectifier Faulty IC regulator Insufficient or unsuitable battery electrolyte Faulty battery electrode (internal shortcircuit) Faulty contact of battery terminal Excessive electric load
• Replace • Replace • Replace Replace Replace Repair or replace Replace Replace
• Replace 49
Electrical System
