hey TRusers, I have a quick question regarding the method DOT Inspectors use to check for air leaks. I have read somewhere that a vehicle that leaks more than 4psi per minute is subject to out of service, but I cant seem to find any citation.
But here's an encounter I heard on the airwaves today, DOT Pulled over a truck for inspection and the kid was using soap and water to check for air leaks. So My two concerns over this method are; isn't an air leak audible not visible?, and wouldn't the water create rust on delicate brake components like foot valves and relay valves? Is there a way to refuse the inspector from using soap and water?
DOT Inspection methods
Discussion in 'Trucking Industry Regulations' started by thesvg, Mar 20, 2012.
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Are you serious? Best way to pinpoint an audible air leak is to make it visible.
Have you looked at those valves? What happens when you drive down the road when it's raining?
Do you believe everything you hear over the airwaves? Well he got cleaned, how about did they use lube?MartinFromBC Thanks this. -
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k. Air Loss Rate
If an air leak is discovered and either the primary or secondary reservoir pressure is not maintained when: (396.3(a)(1))
(1) Governor is cut-in;
(2) Reservoir pressure is between 80 90 psi (551 620 kPa);
(3) Engine is at idle; and,
(4) Service brakes are fully applied.
Best regardskinrob and keepntruckin Thank this. -
Best regardskeepntruckin Thanks this. -
Audible with traffic going by ? Not hardly. But soapy water on all fittings ? Must have taken inspector 5 hours for this inspection.......
Studebaker Hawk, Cattleman84 and Meltom Thank this. -
Last edited by a moderator: Mar 21, 2012
alds, peterd, Studebaker Hawk and 2 others Thank this. -
Best regardskinrob and keepntruckin Thank this. -
Another air loss item that can place a vehicle out of service is an audible air leak in a brake hose that is at a place in the hose other than at a proper connection. This refers to AUDIBLE air leaks, no soap required.lonewolf4ad, thesvg, Onetruckpony and 3 others Thank this.
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