Chapter 4 PowerPoint

Define these Technical Terms using the textbook:

1. air hose

2. battery charger

3. bench grinder

4. blow gun

5. fender covers

6. floor jack

7. impact wrench

Answer these discussion questions using the textbook:

1. Explain safety rules that pertain to power tools and equipment.

Read the chapter summary below:

■ Power tools use electricity, compressed air, or hydraulic pressure. Large shop tools, such as floor jacks, parts cleaning tanks, and steam cleaners, are classified as shop equipment.

■ An air compressor is the source of compressed air for an auto shop.

■ High-pressure air hoses are connected to the metal lines from the air compressor.

■ Air tools, also called pneumatic tools, use air pressure for operation. They are labor-saving tools and are well worth their cost.

■ Air wrenches, or impact wrenches, provide a very fast means of installing or removing threaded fasteners.

■ Special impact sockets and impact extensions must be used with air wrenches.

■ A blow gun is commonly used to dry and clean parts washed in solvent.

■ An air drill is excellent for many repairs because of its power output and speed adjustment capabilities.

■ A bench grinder can be used for grinding, cleaning, or polishing operations. The hard grinding wheel is used for sharpening or deburring. The soft wire wheel is for cleaning and polishing.

■ Drill bits, or twist drills, are used to drill holes in metal and plastic parts.

■ A drill bit is mounted in and rotated by a drill. A special key is sometimes needed to tighten the drill bit in the drill chuck.

■ A floor jack is used to raise either the front, sides, or rear of a vehicle.

■ Jack stands support a vehicle during repair. After raising a vehicle with a jack, place stands under the vehicle.

■ A tire changer is a common piece of shop equipment used to remove and replace tires on wheels.

■ A portable engine crane is used to remove and install engines.

■ An engine stand is used to hold an engine while it is overhauled (rebuilt) or repaired.

■ A cold-solvent tank (parts washer) can be used to remove grease and oil from parts.

■ An oxyacetylene torch outfit can be used to heat, cut, weld, or braze metal parts.

■ A welder is used to melt and fuse metal parts together.

■ A soldering gun or iron is used to solder wires.

■ A battery charger is used to recharge a discharged 12-volt battery.

■ A drop light provides a portable source of light.

■ Pullers are needed to remove seals, gears, pulleys, steering wheels, axles, and other pressed-on parts.

■ Fender covers are placed over the fenders, the upper grille, or other body sections to protect them.