National Safety Code Standard 11 - CCMTA

1 National Safety code Standard 11 Maintenance and Periodic Inspection standards Acknowledgements Canadian Council of Motor Transportation Administrators January 2020 ISBN 978-1-927993-54-5 Canadian Council of Motor Transport Administrators 1111 Prince of Wales Drive, Suite 404, Ottawa, Ontario K2C 3T2 T: F: E: CCMTA gratefully acknowledges members of the Project Group on Commercial Motor Vehicle Inspection standards for their work in the development and update of the standards identified in this manual. Contents January 2020 National Safety code Standard 11 Maintenance and Periodic Inspection standards Page i Introduction .. 2 Goals of the Standard .. 2 Background .. 2 Application.

2 2 General Requirements .. 2 Inspection and Maintenance Cycles .. 3 Procedures for Compliance .. 4 Enforcement .. 4 The Standard .. 4 Conclusion .. 5 General Requirements .. 6 1. Inspection, Repair and Maintenance .. 6 2. Lubrication .. 6 3. Wear Limits and Tolerances .. 6 4. Applicability .. 6 Section 1 Power Train .. 7 1. Accelerator Pedal/Throttle Actuator .. 7 2. Clutch/ Clutch Pedal .. 7 3. Engine Controls .. 7 4. Engine Starter .. 7 5. Gasoline, Diesel, Pressurized or Liquefied Fuel System .. 7 6. Hybrid Electric Vehicle & Electric Vehicle Power Train System .. 7 7. Exhaust System .. 7 8. Drive Shaft .. 8 9. Engine or Accessory Drive Belt .. 8 Section 2 9 1. Suspension and Frame Attachments .. 9 2. Axle Attaching and Tracking Components.

3 9 3. Axle and Axle Assembly .. 9 4. Springs and Spring Attachments .. 9 5. Air Suspension .. 9 6. Shock Absorber/Strut Assembly .. 9 Section 3H Hydraulic and Electric Brakes .. 10 1. Hydraulic Brake System Components .. 10 2. Brake Pedal/Actuator .. 10 PART A of National Safety code Standard 11 contains the recommended standards for a commercial vehicle maintenance program and represents the minimum criteria which would be evaluated in an audit of the carrier s operation. January 2020 National Safety code Standard 11 Maintenance and Periodic Inspection standards Page ii 3. Vacuum Assist (Boost) System on Truck or Bus .. 10 4. Hydraulic Assist (Boost) System on Truck or Bus .. 10 5. Air Assist (Boost) System on Truck or Bus.

4 11 6. Air-Over-Hydraulic Brake System .. 11 7. Surge Brake Controller on Trailer .. 11 8. Vacuum System on Trailer .. 11 9. Air-Boosted Trailer Brake System .. 11 10. Electric Brake System on Trailer .. 11 11. Brake System Indicator Lamps .. 11 12. Drum Brake System Components .. 11 13. Disc Brake System Components .. 13 14. Mechanical Parking Brake .. 13 15. Spring-Applied Hydraulic-Released (SAHR) Parking Brake .. 14 16. Anti-Lock Brake System (ABS) on a Truck or Bus .. 14 17. Stability Control System .. 14 Section 3A Air Brakes .. 15 1. Air Compressor .. 15 2. Air Supply System .. 15 3. Air System Leakage on Trailer .. 15 4. Air 15 5. Air Tank Check Valves .. 15 6. Brake Pedal/Actuator .. 15 7. Treadle Valve and Trailer Handle Valve.

5 15 8. Brake Valves & Controls .. 16 9. Proportioning, Inversion or Modulating Valve .. 16 10. Towing Vehicle (Tractor) Protection System .. 16 11. Parking Brake and Emergency Application on Truck or Bus .. 16 12. Parking Brake and Emergency Application on Trailer .. 16 13. Air System Components .. 16 14. Brake Chamber (Includes a DD3 chamber on a bus) .. 17 15. Drum Brake System Components .. 17 16. S-Cam Drum Brake System .. 18 17. Brake Shoe Travel (Wedge Brakes) .. 18 18. Disc Brake System Components .. 18 19. Spring-Applied Air-Released (SAAR) Parking Brake .. 19 20. Anti-Lock Brake System (ABS) on a Truck or Bus .. 19 21. Anti-Lock Brake System (ABS) on a Trailer .. 20 22. Stability Control System on Truck or Bus.

6 20 23. Stability Control System (Electronic Stability Control {ESC}) or Roll Stability System on Trailer .. 20 Section 4 Steering .. 21 1. Steering Control and Linkage .. 21 January 2020 National Safety code Standard 11 Maintenance and Periodic Inspection standards Page iii 2. Power Steering System .. 21 3. Steering Operation (Active Steer Axle) .. 21 4. Kingpin Play .. 21 5. Self Steer and Controlled Steer Axle .. 21 Section 5 Instruments and Auxiliary Equipment .. 22 1. Fire Extinguisher .. 22 2. Hazard Warning Kit .. 22 3. Horn .. 22 4. Speedometer and Odometer .. 22 5. Instruments and Gauges on a Bus .. 22 6. Windshield Wiper/Washer .. 22 7. Heater and Windshield Defroster .. 22 8. Chain/ Headache Rack .. 22 9. Indicator Lamps.

7 22 10. First Aid Kit .. 22 Section 6 Lamps .. 23 1. General .. 23 2. Headlamps .. 23 3. Tail Lamps .. 23 4. Stop Lamps .. 23 5. Turn Signal Lamps .. 23 6. Hazard Warning Lamps .. 23 7. Side Marker Lamps .. 24 8. Clearance Lamps .. 24 9. Identification Lamps .. 24 10. Back-Up Lamps .. 24 11. Licence Plate Lamp .. 24 12. Daytime Running Lamps .. 24 13. Auxiliary Lighting .. 24 14. Instrument Lamps .. 24 15. Reflex 25 16. Retro-Reflective Marking .. 25 Section 7 Electrical System .. 26 1. Wiring .. 26 2. Battery .. 26 3. Trailer Cord .. 26 4. Switches .. 26 Section 8 Body and Chassis .. 27 1. Hood or Engine Enclosure .. 27 2. Tilt Cab .. 27 3. Air Suspended Cab .. 27 January 2020 National Safety code Standard 11 Maintenance and Periodic Inspection standards Page iv 4.

8 Cab and Passenger-Vehicle Body .. 27 5. Cargo Body .. 27 6. Frame, Rails & Mounts .. 28 7. Unitized Body Elements .. 28 8. Cab or Cargo Door .. 28 9. Cargo Tank or Vessel .. 28 10. Special Body, Device or Equipment Attached or Mounted to Vehicle .. 28 11. Bumper .. 28 12. Windshield .. 28 13. Side Windows .. 29 14. Rear Window .. 29 15. Interior Sun Visor .. 29 16. Exterior Windshield Sun Visor .. 29 17. Rear-view Mirror .. 29 18. Seat .. 29 19. Seat Belt/Occupant Restraint .. 29 20. Fender/Mud Flap .. 29 21. Landing Gear on Trailer .. 30 22. Sliding Axle Assembly (Sliding Bogie) on Trailer .. 30 23. Aerodynamic Device and Attachment .. 30 24. Rear Impact Guard (RIG) on Trailer .. 30 25. Floor Pan/Baggage Floor/Step Well on a Bus.

9 30 26. Interior Body and Fixtures on a Bus .. 30 27. Service and Exit Door on a Bus .. 30 28. Emergency Exit (Door, Window and Roof Hatch) on a Bus .. 30 29. Passenger Compartment Window on a Bus (Except Emergency Exit Window) .. 30 30. School Bus Exterior Mirror (Except Standard Left and Right Side Mirror) .. 31 31. School Bus Body Exterior .. 31 32. Auxiliary Compartment on a Bus .. 31 Section 9 Tires and Wheels .. 32 1. Tire Tread Depth .. 32 2. Tire Tread Condition .. 32 3. Tire Sidewall and Manufacturer Markings .. 32 4. Tire Inflation Pressure .. 32 5. Wheel Hub .. 32 6. Wheel Bearing .. 33 7. Wheel/Rim (Applies to all wheel types).. 33 8. Multi-Piece Wheel/Rim .. 33 9. Spoke Wheel/Demountable Rim System .. 33 10. Disc Wheel System.

10 33 11. Wheel Fasteners (Nuts, Bolts and Studs) .. 33 January 2020 National Safety code Standard 11 Maintenance and Periodic Inspection standards Page v Section 10 Coupling Devices .. 34 1. Hitch Assembly, Structure and Attaching Components .. 34 2. Secondary Attachment ( Safety Chain or Cable) .. 34 3. Pintle Hook, Pin Hitch or Coupler Hitch .. 34 4. Ball Type Hitch .. 34 5. Roll-Coupling Hitch .. 34 6. Automated Coupling Device .. 34 7. Fifth Wheel Coupler .. 34 8. Oscillating Fifth Wheel Coupler .. 35 9. Ball-Bearing Type Turntable on Trailer .. 35 January 2020 National Safety code Standard 11 Maintenance and Periodic Inspection standards Page vi Introduction .. 37 Goals of the 37 Background .. 37 Application .. 37 General Requirements.