Chapter 2 Apparatus Inspection And Maintenance

Front 1

Maintenance

Back 1

Keeping equipment or apparatus in the state of usefulness or readiness.

Front 2

Repair

Back 2

To restore or put together something that has become inoperable or out of place

Front 3

Commercial Driver's License (CDL)

Back 3

A driver's license that is issued to individuals who demonstrate competence inspecting and driving vehicles with a Gross Vehicle Rating of 26,001 pounds or more.

Front 4

Circle or Walk-Around Method

Back 4

An inspection method in which the driver or inspector starts at one point of the apparatus and continues in either a clockwise or counterclockwise Direction inspecting the entire apparatus

Front 5

Operational Readiness Inspection

Back 5

Inspecting apparatus and equipment on the apparatus to ensure that all equipment is in place, clean, and ready for service.

Front 6

Pretrial Road Worthiness Inspection

Back 6

A visual inspection of an apparatus to ensure the major components of the chassis are present and in proper working condition.

Front 7

Functional Check

Back 7

An inspection where a certain system or component of an apparatus is operated to ensure that it is functioning properly

Front 8

Gross Axle Weight Rating

Back 8

The maximum amount of weight that an axle system can safely carry.

Front 9

Load Management System

Back 9

A electrical monitoring system that will shed electrical load in a predetermined order if the chassis voltage begins to drop below a predetermined level

Front 10

Overload

Back 10

Operation of equipment or a conductor in excess of its rated ampacity; continuous overload may result in overheating that damages the equipment

Front 11

Load Sequencer

Back 11

Device in an electrical system that turns lights on at specified intervals, so that the start-up load for all of the devices does not occur at the same time

Front 12

Load Monitor

Back 12

Device that "watches" an electrical system for added loads that may threaten to overload the system

Front 13

Load Shedding

Back 13

When an overload condition occurs, the load monitor will shut down a less important electrical equipment to prevent the overload.

Front 14

Manual Shift Transmission

Back 14

A componenet of the power train that receives torque from the engine and converts it to rotation to the wheels. A clutch is used to disengage the transmission from the engine to allow the apparatus to start, stop, or change gears to maximize engine performance.

Front 15

Free Play

Back 15

Amount of travel the clutch has before it begins to disengage the engine from the transmission.

Front 16

Throw-Out Bearing

Back 16

The component used to push on the internal clutch fingers connected to the clutch pedal and when activated, disengage the clutch from the engine

Front 17

Steering Wheel Play

Back 17

In a steering wheel system, the amount of travel between turning the wheel and when the steering system moves.

Front 18

Hydraulic Braking Systems

Back 18

A braking system that uses a fluid in a closed system to pressurize wheel cylinders when activated.

Front 19

Antilock Braking Systems

Back 19

An electronic system that monitors wheel spin. When braking and a wheel are sensed to begin locking up, the brake on the wheel is temporarily released to prevent skidding.

Front 20

Air-Actuated Braking Systems

Back 20

A braking system that uses compressed air to hold off a spring break (parking brake) and applies air pressure to a service break for vehicle stopping.

Front 21

Air Brake Test

Back 21

A series of tests used to ensure the serviceability of an air braking system. Tests include air loss, air compressor build up, air warning and emergency parking brake activation.

Front 22

Slack Adjusters

Back 22

Devices used in an air brake system that connect between the activation pads and the brake pads that compensate for brake pad wear

Front 23

Tilt Cab

Back 23

A truck that uses a cab that lowers over the power train

Front 24

Diesel Particulate Filter (DPF)

Back 24

A device designed to remove diesel particulate matter or soot from the exhaust gas of a diesel engine

Front 25

Chassis Lubrication

Back 25

Applying grease and other lubricants to specific parts of a chassis to reduce wear, noise, and binding.

Front 26

Post Maintenance/Repair Inspection

Back 26

A specific inspection to an area of a chassis or apparatus to ensure that the unit is operating properly in accordance with the manufacturer's initial design.