Safety With Starting and Charging Systems
Keep these 9 safety precautions in mind when working with starting and charging systems.
1. When testing a starter on a “free speed test,” make
sure the starter is fastened securely to the bench.
A great deal of torque is usually produced when
the starter first begins to spin.
2. When working on the starting or charging circuit,
always remove rings, bracelets, and other jewelry
to eliminate the possibility of getting an electrical
3. When removing a starter, first disconnect the
battery terminals (negative first) to eliminate the
possibility of accidental arcing from the battery
cable to ground.
4. Often the pinion gear on the starter or the flex plate
ring gear is worn and has very sharp edges. Be
careful not to cut your fingers on the sharp edges
of a worn gear.
Back to Safety
5. Some starters are quite heavy. When installing a
starter, be careful not to pinch your fingers between
the block and the starter frame.
6. On many alternators, the hot (+ battery) wire is
connected to the back of the alternator. Be careful
not to have the air cleaner or other grounded
component or tool touch this hot wire.
7. When tightening the belt on the alternator, always
watch your hands so they do not get pinched or
caught near the belts.
8. When removing an alternator, always make sure
the battery is disconnected.
9. Always remember to wear OSHA-approved safety
classes when working on the starting or charging