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.
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HOMESERVICE MANUALSTRIUMPH1974SPITFIREREPAIR AND DIAGNOSIS (SINGLE PAGE)ELECTRICALSTARTERSTARTER CONTROLS - LUCASTESTINGSOLENOID CONTACTS
1974 Triumph Spitfire
Solenoid Contacts
1974 Triumph SpitfireSECTION Solenoid Contacts
- Disconnect all cables and connectors from solenoid terminals and connect a 10 volt power supply in series with a switch between "STA" terminal and small, unmarked terminal of solenoid. Connect a test lamp across the solenoid main terminals and insert a stop (1/8" thick) between drive end bracket and pinion gear.
- Close switch to energize series windings and test lamp should light, indicating contacts are closed. Open switch and remove pinion stop. Close switch and hold pinion gear in engaged position. Open switch and light should go out indicating that contacts have opened.
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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.