North American Standard Level I Inspection Procedure - Confirm Air Brake System Air Pressure
| Entry Date | March 6, 2009 |
|---|---|
| Issue Number | 09-015-VEH |
| Name | Brian Davyduke |
| Agency | Alberta Transportation - Commercial Vehicle Enforcement |
| Address | P.O. Box 986Whitecourt, AB, Canada, T7S 1N9United StatesMap It (opens in a new tab) |
| Phone | (780) 778-7200 |
| Fax | (780) 778-6811 |
| [email protected] | |
| Committee | Vehicle Committee |
| Status | Closed |
| Summary of Issue | Currently the North American Standard Level I Inspection Procedure does not include checking the air brake system pressure prior to marking the pushrods to check for brake adjustment. If the vehicle were to lose air during the brake applications while checking brake lamps the air pressure could be substantially reduced. The air pressure could be reduced enough that the air pressure in the system is not sufficient enough to keep the park / emergency brake released fully. If we don't confirm air pressure in the air brake system prior to going under the vehicle in Step 28 we may not get an accurate measurement for pushrod travel because our chalk mark could possibly be applied to a pushrod that is already beginning to travel. |
| Justification or Need | Brake measurements may not be accurate in some cases and therefore may be missing some out of adjustment brakes. |
| Request for Action | Add to Step 28 - Inspect Steering Axle, a procedure for confirming air pressure in the air brake system is between 90-100 psi prior to going under the vehicle. |