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.
1966 Fiat 124FACTORY OEM SERVICE PROCEDURE
Charging Systems: Alternators: Adjustment: Notes
NOTE:
Ambient temperature must be 122±5°F.
- With alternator stationary and switch "I" open (see Figure), remove regulator cover. If testing showed a regulated voltage higher than specified, lower the spring pressure on regulator by bending bracket on yoke up a little.
- Conversely, if recorded regulated voltage is lower than specified, bend bracket down a little to load spring with more pressure.
- Install cover and repeat testing of second stage. After obtaining correct setting of second stage, check first stage as directed under testing. If voltage value of first stage is 0.2 - 0.7 volt less than the voltage recorded for the second stage, the adjustment is finished. Otherwise, one of the following two cases may occur:
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.