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Unit – 3 Inspection & Dynamics

Unit – 3 Inspection & Dynamics. The inspection process may seem routine but every trip changes things. Always inspect carefully. Inspections & Maintenance Objectives. Understand the value and importance of regular inspections of emergency vehicles.

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Unit – 3 Inspection & Dynamics

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  1. Unit – 3 Inspection & Dynamics The inspection process may seem routine but every trip changes things. Always inspect carefully.

  2. Inspections & Maintenance Objectives • Understand the value and importance of regular inspections of emergency vehicles. • Identify the major component system of an emergency vehicle. • Understand how to perform pre and post-trip inspections.

  3. Inspections & Maintenance Objectives • Understand the various classes of PM and the importance of a PM program for emergency vehicles. • Recognize the role of the driver in inspections and maintenance. • Understand the importance of keeping accurate and complete records.

  4. Types of Preventative Maintenance • Routine Maintenance • Scheduled Maintenance • Crisis Maintenance

  5. Vehicle Inspection

  6. Inspections – Pre-Trip • Vehicle overview • Check engine compartment • Start engine and check inside cab • Check headlights, signal lights, warning lights and audio devices • Conduct walk around inspection • Check controls and indicators • Check brake system (air brakes)

  7. Check the Log • Maintenance Records • Operational Records

  8. Emergency Vehicle Components • Chassis • Frame • Suspension System • Steering & Braking System • Power Train Components

  9. Vehicle Characteristics • Suspension Systems • Axles • Springs • Wheels

  10. Role of the Emergency Vehicle Driver • Lubrication • Oil (Engine) • Tires • Steering System • Belts • Tools, Appliances, and Equipment

  11. Role of the Emergency Vehicle Driver • Battery or Batteries • Coolant System • Electrical System • Fuel • Hydraulic Fluids • Braking System

  12. Vehicle Characteristics • Braking Systems • Anti-Lock Braking System (ABS) • Secondary or Auxiliary Braking Systems • Engine Brake • Automatic Transmission Retarder • Driveline Retarder

  13. Types of Preventative Maintenance • Routine • Fluid level checks • Wheels and tires • Electrical system and devices

  14. Vehicle Inspection 4/32” Front tires 2/32” Rear tires

  15. Vehicle Inspection

  16. Preparing to Drive • Effective Start-Up Procedures • Circle of Safety Inspection • Adjustment of cab features • Wearing of occupant restraints • Receive signal before moving

  17. Role of the Emergency Vehicle Driver • Document the need for maintenance on the assigned vehicle • Verify that the request and needed maintenance was performed.

  18. Types of Preventative Maintenance • Scheduled • Manufacturer's recommended schedule • Amount of use • Organizational policy • Professional standards

  19. Vehicle Forces and Dynamics

  20. Vehicle Dynamics Objectives • Understand the physical forces which act upon vehicles and their impact upon vehicle handling. • Recognize that certain vehicle characteristics can influence the impact of physical forces on emergency vehicles

  21. Physical Forces • Friction • Velocity • Momentum • Inertia • Centrifugal Force

  22. Vehicle Characteristics • Total Weight and Weight Distribution • Suspension system • Braking system • Baffling system

  23. Vehicle Characteristics • Total weight and weight distribution. • Gross Axle Weight Rating (GAWR) • Gross Vehicle Weight rating (GVWR) • Weight Distribution – horizontal & vertical centers of gravity

  24. Physical Forces • Momentum – is measures as the product of the object’s mass or weight times its velocity • Inertia – is the force it takes for a moving object to stay in motion in the same direction

  25. Physical Forces • Directional Control is a derivative of three (3) factors • Steering • Turning • Tracking

  26. Centrifugal Forces

  27. Physical Forces • Friction – resistance to motion between two moving objects that touch. • Tire/Road Friction • Brake Friction • Steering Friction

  28. Tire Blowout

  29. Physical Forces • Velocity – Velocity is Speed • Acceleration • Deceleration • Braking

  30. Braking & ABS • Acceleration • Deceleration • Braking

  31. Post Trip Considerations

  32. Inspections – Post-Trip • Cleaning of the vehicle • Replacing supplies • Re-fueling and checking fluid levels • Report any unusual occurrences or malfunctions.

  33. Unit – 3 Inspection & Dynamics

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