Daily checks for air leaks and manual brake testing before a train departs from a siding. Testing Procedures
If you are working on a coach built before 2010, you are using G73. If it is new stainless steel LHB, ignore G73. rdso technical pamphlet g73
Performed at coaching depots after every trip (approx. 1000-1500 km). G73 specifies: Daily checks for air leaks and manual brake
The most exhaustive schedule. G73 Rev. 'C' specifies: rdso technical pamphlet g73