Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
1979 Triumph SpitfireFACTORY OEM SERVICE PROCEDURE
Regulator Test
- Provide Regulator Test Circuit as shown and gradually increase engine speed to approximately 640 RPM (1, 550 alternator RPM). Test lamp should go out.
- Increase engine speed to approximately 2, 500 RPM (6, 000 alternator RPM). Voltmeter should be steady at 13.6-14.4 volts. If reading is not steady and satisfactory Output Test has been performed, regulator should be replaced.NOTE: Up to 10 milliamp battery drain is normal, even with the ignition in the "OFF" position.
Factory Service Tools
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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