Mechanics Review Topics Safety Hand Tools Hoists Brakes

Mechanics Review

Topics �Safety �Hand Tools �Hoists �Brakes �Tires �General Maintenance �Engine Fundamentals �Oil Changes Fuel Systems Batteries Engine Electrical Charging System Starting System Cooling System Vehicle construction Concept Cars Transmissions

Safety �Glasses �Good House Keeping �Documenting all accidents �Proper procedures

Hand Tools �Steel Alloy �Easy to clean �Impact sockets are what color �Types of screw drivers �Imperial and Metric �Torque wrenches

Hoists �Lifting points on cars �Jack Stands

Brakes �Disc (Pads) �Drum (Shoes) �Commonly disc in the front, drums in the rear �E brakes are usually hooked up to drums �ABS �Brake fluid in the master cylinder

Brakes �Inspection: �Deep groves in the drum �Thickness of pads or shoes �Leaking hoses

Tires �Star pattern �Speed ratings �Tire wear (over inflated/under inflated)

General Maintenance � 4 Fluids that should be checked regularly****** �Engine oil should be Golden Brown �Transmission Fluid should be Red or Orange******* �Air filters should be white �Tire pressure= Good mpg, long tire life, good braking �Oil Change every 5000 to 7000 km

Engine Fundamentals �Strokes �Intake �Compression �Power �Exhaust �Amount of cylinders �Arrangement of cylinders (Small 4 cyl, Big V 8) �Rotary Engine= Mazda RX-3, 7, 8

Parts �Camshaft �Valves �Piston �Crankshaft �Spark plug (Distributor for older, ECU for newer) �Connecting rod

Oil Changes �Every 5000 -7000 km �When you remove an oil filter make sure the gasket comes off �Put the filter on as tight as you can with 2 hands �You must know how much oil the car takes before filling it up

Fuel Systems Fuel Injection �Port injection (right by the valve) �Throttle body injection (in the intake) Carburetors (Parts)

Carburetor �Air filter? �Choke? �Fuel in? �Float? �Throttle?

Batteries �Just over 12 v �Battery life 3 -6 years �Cold Cranking amps=Power �Distilled Water + Acid = Battery Electrolyte �NPPN

Engine Electrical �Multimeter measures Volts, Amps and Ohms �Cars run on DC �Alternator makes AC �Rectified to DC �Charging system charges the battery with DC �Starting system- Key engages power to the solenoid, which switches power to the starter

Cooling system �Bring the car to operating temperature �Keep the car at operating temperature Check for leaks in this Order � 1 -Radiator hoses � 2 -Heater Hoses � 3 -Thermostat � 4 -Water pump � 5 -Heater Core

Cooling System �Belt Driven fans �Electric Fans �Cool the engine and the radiator

If you are trying to fix something �Ask me �Mitchells �Books �Hanes manual �Internet

Vehicle Construction �Unibody �Frame On

Transmissions �Manual (Standard) �Automatic

Labs to do before the test! �Lift a car (Hoist) �Balance and mount a tire