Division 1.1 Mechanical condition and operationX1
United Kingdom
| 1.1.1. Service brake pedal/hand lever pivot | Visual inspection of the components while the braking system is operated. Note: Vehicles with power-assisted braking systems should be inspected with the engine switched off. | (a) Pivot too tight. | X | ||
| (b) Excessive wear or play. | X | ||||
| 1.1.2. Pedal/hand lever condition and travel of the brake operating device | Visual inspection of the components while the braking system is operated Note: Vehicles with power-assisted braking systems should be inspected with the engine switched off. | (a) Excessive or insufficient reserve travel. | X | ||
| (b) Brake control not releasing correctly. | X | ||||
| If its functionality is affected. | X | ||||
| (c) Anti-slip provision on brake pedal missing, loose or worn smooth. | X |
| Item | Method | Reasons for failure | Assessment of deficiencies | ||
|---|---|---|---|---|---|
| Minor | Major | Dangerous | |||
| 1.1.3. Vacuum pump or compressor and reservoirs | Visual inspection of the components at normal working pressure. Check time required for vacuum or air pressure to reach safe working value and function of warning device, multi-circuit protection valve and pressure relief valve. | (a) Insufficient pressure/vacuum to give assistance for at least four brake applications after the warning device has operated (or gauge shows an unsafe reading); | X | ||
| at least two brake applications after the warning device has operated (or gauge shows an unsafe reading). | X | ||||
| (b) Time taken to build up air pressure/vacuum to safe working value is too long according to the requirements 1 | X | ||||
| (c) Multi-circuit protection valve or pressure relief valve not working. | X | ||||
| (d) Air leak causing a noticeable drop in pressure or audible air leaks. | X | ||||
| (e) External damage likely to affect the function of the braking system. | X | ||||
| Secondary braking performance not met. | X | ||||
| 1.1.4. Low pressure warning gauge or indicator | Functional check | Malfunctioning or defective gauge or indicator. | X | ||
| Low pressure not identifiable. | X | ||||
| 1.1.5. Hand-operated brake control valve | Visual inspection of the components while the braking system is operated. | (a) Control cracked, damaged or excessively worn. | X | ||
| (b) Control insecure on valve or valve insecure. | X | ||||
| (c) Loose connections or leaks in system. | X | ||||
| (d) Unsatisfactory operation. | X | ||||
| Item | Method | Reasons for failure | Assessment of deficiencies | ||
|---|---|---|---|---|---|
| Minor | Major | Dangerous | |||
| 1.1.6. Parking brake activator, lever control, parking brake ratchet, electronic parking brake | Visual inspection of the components while the braking system is operated. | (a) Ratchet not holding correctly. | X | ||
| (b) Wear at lever pivot or in ratchet mechanism. | X | ||||
| Excessive wear. | X | ||||
| (c) Excessive movement of lever indicating incorrect adjustment. | X | ||||
| (d) Activator missing, damaged or inoperative. | X | ||||
| (e) Incorrect functioning, warning indicator shows malfunction | X | ||||
| 1.1.7. Braking valves (foot valves, unloaders, governors) | Visual inspection of the components while the braking system is operated. | (a) Valve damaged or excessive air leak. | X | ||
| If its functionality is affected. | X | ||||
| (b) Excessive oil discharge from compressor. | X | ||||
| (c) Valve insecure or inadequately mounted. | X | ||||
| (d) Hydraulic fluid discharge or leak. | X | ||||
| If its functionality is affected. | X | ||||
| 1.1.8. Couplings for trailer brakes (electrical & pneumatic) | Disconnect and reconnect braking system coupling between towing vehicle and trailer. | (a) Tap or self sealing valve defective. | X | ||
| If its functionality is affected. | X | ||||
| (b) Tap or valve insecure or inadequately mounted. | X | ||||
| If its functionality is affected. | X | ||||
| (c) Excessive leaks. | X | ||||
| If its functionality is affected. | X | ||||
| Item | Method | Reasons for failure | Assessment of deficiencies | ||
|---|---|---|---|---|---|
| Minor | Major | Dangerous | |||
| (d) Not functioning correctly. | X | ||||
| Operation of brake affected. | X | ||||
| 1.1.9. Energy storage reservoir pressure tank | Visual inspection. | (a) Tank slightly damaged or slightly corroded. | X | ||
| Tank heavily damaged, corroded or leaking. | X | ||||
| (b) Drain device operation affected. | X | ||||
| Drain device inoperative. | X | ||||
| (c) Tank insecure or inadequately mounted. | X | ||||
| 1.1.10. Brake servo units, master cylinder (hydraulic systems) | Visual inspection of the components while the braking system is operated, if possible. | (a) Defective or ineffective servo unit. | X | ||
| If it is not operating. | X | ||||
| (b) Master cylinder defective but brake still operating. | X | ||||
| Master cylinder defective or leaking. | X | ||||
| (c) Master cylinder insecure but brake still operating. | X | ||||
| Master cylinder insecure. | X | ||||
| (d) Insufficient brake fluid below MIN mark | X | ||||
| Brake fluid significantly below MIN mark | X | ||||
| No brake fluid visible. | X | ||||
| (e) Master cylinder reservoir cap missing. | X | ||||
| (f) Brake fluid warning light illuminated or defective. | X | ||||
| (g) Incorrect functioning of brake fluid level warning device. | X | ||||
| Item | Method | Reasons for failure | Assessment of deficiencies | ||
|---|---|---|---|---|---|
| Minor | Major | Dangerous | |||
| 1.1.11. Rigid brake pipes | Visual inspection of the components while the braking system is operated, if possible. | (a) Imminent risk of failure or fracture. | X | ||
| (b) Pipes or connections leaking (air brake systems). | X | ||||
| Pipes or connection leaking (hydraulic brake systems). | X | ||||
| (c) Pipes damaged or excessively corroded. | X | ||||
| Affecting the functioning of the brakes on account of blocking or imminent risk of leaking. | X | ||||
| (d) Pipes misplaced. | X | ||||
| Risk of damage. | X | ||||
| 1.1.12. Flexible brake hoses | Visual inspection of the components while the braking system is operated, if possible. | (a) Imminent risk of failure or fracture. | X | ||
| (b) Hoses damaged, chafing, twisted or too short. | X | ||||
| Hoses damaged or chafing. | X | ||||
| (c) Hoses or connections leaking (air brake systems) | X | ||||
| Hoses or connections leaking (hydraulic brake systems). | X | ||||
| (d) Hoses bulging under pressure. | X | ||||
| Cord impaired. | X | ||||
| (e) Hoses porous. | X | ||||
| 1.1.13. Brake linings and pads | Visual inspection. | (a) Lining or pad excessively worn (minimum mark reached). | X | ||
| Lining or pad excessively worn (minimum mark not visible). | X | ||||
| Item | Method | Reasons for failure | Assessment of deficiencies | ||
|---|---|---|---|---|---|
| Minor | Major | Dangerous | |||
| (b) Lining or pad contaminated (oil, grease etc.). | X | ||||
| Braking performance affected. | X | ||||
| (c) Lining or pad missing or wrongly mounted. | X | ||||
| 1.1.14. Brake drums, brake discs | Visual inspection. | (a) Drum or disc worn | X | ||
| Drum or disc excessively worn, excessively scored, cracked, insecure or fractured. | X | ||||
| (b) Drum or disc contaminated (oil, grease, etc.). | X | ||||
| Braking performance affected. | X | ||||
| (c) Drum or disc missing. | X | ||||
| (d) Back plate insecure. | X | ||||
| 1.1.15. Brake cables, rods, levers, linkages | Visual inspection of the components while the braking system is operated, if possible. | (a) Cable damaged or knotted. | X | ||
| Braking performance affected. | X | ||||
| (b) Component excessively worn or corroded. | X | ||||
| Braking performance affected. | X | ||||
| (c) Cable, rod or joint insecure. | X | ||||
| (d) Cable guide defective. | X | ||||
| (e) Restriction to free movement of the braking system. | X | ||||
| (f) Abnormal movement of the levers/linkage indicating maladjustment or excessive wear. | X | ||||
| Item | Method | Reasons for failure | Assessment of deficiencies | ||
|---|---|---|---|---|---|
| Minor | Major | Dangerous | |||
| 1.1.16. Brake actuators (including spring brakes or hydraulic cylinders) | Visual inspection of the components while the braking system is operated, if possible. | (a) Actuator cracked or damaged. | X | ||
| Braking performance affected. | X | ||||
| (b) Actuator leaking. | X | ||||
| Braking performance affected. | X | ||||
| (c) Actuator insecure or inadequately mounted. | X | ||||
| Braking performance affected. | X | ||||
| (d) Actuator excessively corroded. | X | ||||
| Likely to crack. | X | ||||
| (e) Insufficient or excessive travel of operating piston or diaphragm mechanism. | X | ||||
| Braking performance affected (lack of reserve movement). | X | ||||
| (f) Dust cover damaged. | X | ||||
| Dust cover missing or excessively damaged. | X | ||||
| 1.1.17. Load sensing valve | Visual inspection of the components while the braking system is operated, if possible. | (a) Defective linkage. | X | ||
| (b) Linkage incorrectly adjusted. | X | ||||
| (c) Valve seized or inoperative (ABS functioning). | X | ||||
| Valve seized or inoperative. | X | ||||
| (d) Valve missing (if required). | X | ||||
| (e) Missing data plate. | X | ||||
| Item | Method | Reasons for failure | Assessment of deficiencies | ||
|---|---|---|---|---|---|
| Minor | Major | Dangerous | |||
| (f) Data illegible or not in accordance with requirements 1 | X | ||||
| 1.1.18. Slack adjusters and indicators | Visual inspection. | (a) Adjuster damaged, seized or having abnormal movement, excessive wear or incorrect adjustment. | X | ||
| (b) Adjuster defective. | X | ||||
| (c) Incorrectly installed or replaced. | X | ||||
| 1.1.19. Endurance braking system (where fitted or required) | Visual inspection. | (a) Insecure connectors or mountings. | X | ||
| If its functionality is affected. | X | ||||
| (b) System obviously defective or missing. | X | ||||
| 1.1.20. Automatic operation of trailer brakes | Disconnect brake coupling between towing vehicle and trailer. | Trailer brake does not apply automatically when coupling disconnected. | X | ||
| 1.1.21. Complete braking system | Visual inspection | (a) Other system devices (e.g. anti-freeze pump, air dryer, etc.) damaged externally or excessively corroded in a way that adversely affects the braking system. | X | ||
| Braking performance affected. | X | ||||
| (b) Leakage of air or anti-freeze. | X | ||||
| System functionality affected. | X | ||||
| (c) Any component insecure or inadequately mounted. | X | ||||
| (d) Unsafe modification to any component 3 | X | ||||
| Braking performance affected. | X | ||||
| Item | Method | Reasons for failure | Assessment of deficiencies | ||
|---|---|---|---|---|---|
| Minor | Major | Dangerous | |||
| 1.1.22. Test connections (where fitted or required) | Visual inspection | (a) Missing. | X | ||
| (b) Damaged. | X | ||||
| Unusable or leaking. | X | ||||
| 1.1.23. Overrun brake | Visual inspection and by operation | Insufficient efficiency. | X | ||