Block G – Cab

Trends

Cabs are becoming more electronically controlled requiring truck and transport mechanics to have a strong understanding of electronic systems to diagnose common problems. Cameras and other video components are becoming more common.

Related Components (including, but not limited to)

Interior components: pedals (fuel, brake and clutch), air ride seats, seat belts, side windows, door handles, visors, panels, SRSs, wheelchair accessories, bunk accessories, dashboard components.

Exterior components: windshields, wipers, mirrors, door handles, steps, wind deflectors, engine bonnet/hood cables, lock-down straps, mouldings, fenders, mounts, air ride system, headlight assemblies, marker lights, horns.

Tools and Equipment

ASee Appendix A.

Task 32 Services, diagnoses and repairs interior cab components.

Context

The vehicle is made up of interior components surrounding the occupant. Diagnostics, service and repair of components as well as routine maintenance is a necessity.

Required Knowledge

• K 1 interior components such as pedals, air ride seats, seat belts, wheelchair accessories, SRSs (air bags), pneumatics, air-powered accessories and side windows
• K 2 safety precautions related to the release of stored energy by disconnecting power sources and allowing capacitors to discharge in SRS modules
• K 3 manufacturers’ specifications on interior component operations
• K 4 common faults such as sticking pedals, air leak on seat and malfunctioning window controls
• K 5 accessories such as bunks, cabinetry and safety netting

Sub-task - G-32.01 Services interior cab components.

Key Competencies

• G-32.01.01 clean, adjust and lubricate components such as brake, throttle and clutch pedal pivot points, bed lifts, SRS (airbags) and seat tracks
• G-32.01.02 perform sensory inspections of interior components such as seats, seat belts, safety equipment, gauges, warning devices and driver controls including lighting, horns and switches to identify worn, damaged or defective components

Sub-task - G-32.02 Diagnoses interior cab components.

Key Competencies

• G-32.02.01 obtain details of symptoms associated with complaint to establish a starting point for diagnosis
• G-32.02.02 perform sensory inspections of interior components such as seats, seat belts, safety equipment, gauges, warning devices and driver controls including lighting, horns and switches to identify worn, damaged or defective components
• G-32.02.03 perform diagnostic procedure by following troubleshooting tree or schematic supplied by manufacturer to determine failure

Sub-task - G-32.03 Repairs interior cab components.

Key Competencies

• G-32.03.01 repair or replace components such as door panels, seat belts, seats, window regulators, motors, switches and dash valves
• G-32.03.02 adjust components such as brake and clutch switches
• G-32.03.03 verify repair under normal operating conditions to ensure it is within manufacturers’ specifications
• G-32.03.04 document that repairs and verifications have been performed for warranty, liability, future reference and tracking

Task 33 Services, diagnoses and repairs exterior cab components.

Context

The vehicle is made up of exterior components surrounding the occupant. Diagnostics, service and repair of components as well as routine maintenance is a necessity.

Required Knowledge

• K 1 exterior components such as windshields, wipers, mirrors, door handles, steps, wind deflectors, engine hood cables, lock-down straps, mouldings and fenders
• K 2 manufacturers’ specifications on exterior component operations

Sub-task - G-33.01 Services exterior cab components.

Key Competencies

• G-33.01.01 perform sensory inspections of exterior to identify worn, damaged or defective components such as cracks in the frame and loose fasteners and fairings
• G-33.01.02 remove and replace consumable components such as lights, wipers and washer fluid according to manufacturers’ specifications
• G-33.01.03 recycle and/or dispose of consumable components according to jurisdictional regulations
• G-33.01.04 record service information and inspection findings according to manufacturers’ requirements for warranty, and for future reference and tracking

Sub-task - G-33.02 Diagnoses exterior cab components.

Key Competencies

• G-33.02.01 obtain details of symptoms associated with complaint to establish a starting point for diagnosis
• G-33.02.02 perform sensory inspections of exterior to identify worn, damaged or defective components such as cracks in the cab frame and loose fasteners and fairings
• G-33.02.03 inspect cab mounts and cab suspension for proper operation, and worn and damaged bushings, leaking shocks, and leaking or damaged valves
• G-33.02.04 measure and adjust cab ride height to manufacturers’ specifications or expected values to verify diagnosis
• G-33.02.05 perform failure analysis to determine root cause of failure
• G-33.02.06 record test results and inspection findings according to manufacturers’ requirements for warranty, and for future reference and tracking

Sub-task - G-33.03 Repairs exterior cab components.

Key Competencies

• G-33.03.01 perform door, hood and cab adjustments to ensure proper operation of component/equipment
• G-33.03.02 replace or repair worn, damaged or faulty components such as windshields, mirrors, lights, hood, hood cables, moldings, fenders and cab mounts
• G-33.03.03 use welding and cutting equipment to repair components
• G-33.03.04 verify repair to ensure it is within manufacturers’ specifications
• G-33.03.05 document that repairs and verifications have been performed for warranty, liability, future reference and tracking