2. A Systems Approach Automotive Technology PowerPoint® Presentation
Prepared by
René Green

3. Chapter 17
Starting Systems

4. Starting Systems Chapter Overview
This chapter introduces the starting system and covers its service and repair.

5. Starting Systems Chapter Objectives
Explain the purpose of the starting system.
List the components of the starting system, starter circuit, and control circuit.
Explain the different types of magnetic switches and starter drive mechanisms.
Explain how a starter motor operates.

6. Starting Systems
Describe the operation of the different types of starter motors.
Perform basic tests to determine the problem areas in a starting system.
Perform and accurately interpret the results of a current draw test.
Disassemble, clean, inspect, repair, and reassemble a starter motor.

7. Starting Systems
Starting System-Design and Components
Starter Circuit

8. Starting Systems Battery and cables Magnetic switches Solenoids
Pull in winding
Hold in winding
Pinion gear

9. Starting Systems
Starter Relays

10. Starting Systems
Starter Motor
Starter housing or frame

11. Starting Systems
Field coils
Pole shoes

12. Starting Systems
Brushes
Armature
Commutator

13. Starting Systems
Operating principles

14. Starting Systems
Operating Principles

15. Starting Systems
Operating Principles

16. Starting Systems
Operating Principles

17. Starting Systems Drive Mechanisms
Positive engagement movable pole shoe drive

18. Starting Systems
Solenoid-actuated gear reduction drive

19. Starting Systems
Permanent Magnet Starting Motor
Starter Drives

20. Starting Systems
Overrunning Clutches

21. Starting Systems Starting System Testing Preliminary Checks
Safety Precautions
Troubleshooting Procedures

22. Starting Systems
Control Circuit
Starting Safety Switch

23. Starting Systems Battery Load Test Cranking Voltage Test
Test conclusions
Cranking Current Test

24. Starting Systems
Test conclusions

25. Starting Systems Insulated Circuit Resistance Test
Test conclusions
Starter Relay By-pass Test
Ground Circuit Resistance Test
Test conclusions
Voltage Drop Test of the Control Circuit
Test conclusions

26. Starting Systems
Test Starter Drive Components
Test conclusions

27. Starting Systems Removing the Starter Motor Free Speed (no-load) Test
Starter Motor Disassembly
Starter Motor Component tests
Field coil tests
Armature tests
Brush inspection
Overrunning clutch inspection
Starter motor reassembly