Warning: Before working on the electrical system, read the safety precautions given in Chapter 3 from this Section.
1. The electrical system is 12 volts with negative ground, and consists of a battery, alternator with built-in voltage regulator, starter motor and associated electrical wiring and components.
2. The battery is a maintenance-free type, charged by a generator driven by a belt from the crankshaft pulley. The starter is a pre-engagement type (with pre-engaged freewheel clutch), has a built-in traction relay. When starting, the traction relay moves the pinion gear into engagement with the flywheel ring gear, and then supplies power to the starter motor. When the engine starts, the freewheel clutch prevents the motor armature from rotating away from the engine until the pinion gear disengages from the flywheel.
3. When working on an electrical system, extra precautions must be taken to avoid damaging semiconductor devices (diodes and transistors), and avoid electric shock. Therefore, please take into account the following points
4. Always remove rings, watches, and other metal objects before working on an electrical system. Even if the battery is disconnected, a discharge may occur if the component is grounded through a metal object. This may cause an electric shock or electrical burn.
5. Do not mix up the battery connections. Components such as the generator or others that have a semiconductor circuit part may be damaged.
6. When starting the engine with heavy gauge cables and an additional battery, connect the batteries, positive to positive and negative to negative cable. This also applies when connecting the charger.
7. Never disconnect the battery terminals or the generator plug while the engine is running.
8. Before electric welding on a vehicle, it is necessary to disconnect the electrical wiring of the battery and generator.
Material was taken from a resource: opelbook
9. Never use an ohmmeter with a hand generator to test circuits.
Visitor comments