Engine electrical systems

Engine electrical systems

The electrical system is of the 12 volt negative earth type, and consists of a 12 volt battery, alternator with integral voltage regulator, starter motor and related electrical accessories, components and wiring. The battery is of the low maintenance or maintenance-free “sealed for life” type and is charged by an alternator which is belt-driven from the crankshaft pulley. The starter motor is of the pre-engaged type, incorporating an integral solenoid. On starting the solenoid moves the drive pinion into engagement with the flywheel ring gear before the starter motor is energised. Once the engine has started, a one-way clutch prevents the motor armature being driven by the engine until the pinion disengages from the flywheel.

• Specifications
• General information and precautions
• Battery - removal and refitting
• Battery - testing and charging
• Alternator - removal and refitting
• Alternator drivebelt(s) - checking, renewal and tensioning
• Alternator - testing
• Alternator brushes - removal, inspection and refitting
• Starter motor - removal and refitting
• Starter motor - testing in the vehicle
• Starter motor - brush renewal
• Spark plugs and HT leads - removal, inspection and refitting
• Coil - testing, removal and refitting
• Distributor cap and rotor arm (OHC models) - removal and refitting
• Distributor components (CVH models) - removal and refitting
• Distributor (OHC models) - removal and refitting
• Ignition timing (OHC models) - adjustment
• Ignition timing - adjustment for use with unleaded petrol
• Electronic modules - removal and refitting
• ESC II system components - removal and refitting
• ESC Hybrid system components - removal and refitting
• EEC IV system components - removal and refitting
• Spark control system components (carburettor models) - removal and refitting