When power fades
Signs of impending alternator failure often include a slight reduction in the voltage reading on the dash, or noticeably duller headlights. It’s hard to predict unless you periodically do an output check over a range of rpms. Even then, alternators with brushes can fail suddenly when a brush wears down to nothing.
Replacement should take about an hour. Consult your truck’s technical manual or the alternator supplier for information on bolt torques.
Tools
• Socket wrenches
• Open-end wrenches
