Service Manual: Table of Contents

Table of Contents

1. General
2. Engines
3. Fuel System
4. Electrical
5. Steering
6. Power Train
7. Brakes
8. Hydraulics
9. Mounted Equipment

Manual Extract: Starting Circuit

The starting circuit is a critical component of vehicle function, comprising several key elements: the starter, starter solenoid, key switch, neutral start switch, battery, and associated wiring and cables.

Here’s how it operates:

• When the key switch is turned to the Start position, and the transmission is in Neutral, the neutral start switch closes, energizing the starter solenoid.
• The solenoid plunger retracts, sliding the starter pinion for engagement with the flywheel ring gear.
• Upon reaching the end of the plunger’s travel, the solenoid contacts close, allowing current to flow to the armature and field windings, prompting the starter to crank the engine.
• To prevent the engine from driving the starter after engine ignition, the starter incorporates a one-way roller clutch. This allows the armature to drive the pinion while disengaging when the pinion attempts to drive the armature.
• Releasing the key switch breaks the solenoid circuit. A spring in the solenoid then returns the plunger to its original position, disengaging the pinion from the flywheel.

Key Features

• Efficient Starting Mechanism: Facilitates quick engine ignition by engaging the starter pinion with the flywheel.
• Safety Features: The neutral start switch ensures the vehicle starts only in Neutral mode, preventing accidental movements.
• Durable Construction: Includes a robust solenoid and starter system equipped with a reliable one-way roller clutch.

Benefits

• Reliable Engine Start: Consistent performance ensures the vehicle’s engine starts efficiently every time.
• Enhanced Safety: Prevents engine recoil through the use of a one-way roller clutch.
• Extended Durability: High-quality components reduce wear and tear, extending the life of the starting system.

Usage Recommendations

• Regular Maintenance: Regularly inspect and maintain all components of the starting system to ensure optimal performance.
• Battery Health Check: Keep the battery in good condition to support the electrical demands of the starting mechanism.
• Ensure Neutral Position: Always confirm the transmission is in Neutral before attempting to start the vehicle.