. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . ic brake valve, the safetyvalve should be adjusted. The adjustment can be made with theautomatic brake valve in emergencyposition or by increasing the tension onthe adjusting spring of the reducingvalve, but there should be no attemptmade to adjust the safety valve or ap-ply the independent brake until thepressure chamber has become partiallycharged on account of the liability of i i blow i froii ; i hi connec-tion with tl hould 1a ->4-in I1!- id a circular t \\ diameter being thi mi as th
. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . ic brake valve, the safetyvalve should be adjusted. The adjustment can be made with theautomatic brake valve in emergencyposition or by increasing the tension onthe adjusting spring of the reducingvalve, but there should be no attemptmade to adjust the safety valve or ap-ply the independent brake until thepressure chamber has become partiallycharged on account of the liability of i i blow i froii ; i hi connec-tion with tl hould 1a ->4-in I1!- id a circular t \\ diameter being thi mi as the equalizing valve p 32 of an inch thick, with a suit-able Op r theshoulder on the equalizing valve iand the equalizing valve tothrough. This piece of wood will thenbe used between the equalizing valvepiston and the equalizing slide valvebushing during the test to determineequalizing valve packing ring equalizing valve could be blockedin lap position by using a lower capnut with an extension, but experimentsprove that this results in either bendingor breaking the equalizing piston, due. DISTRIBUTING VALVE TEST RACK. the equalizing or graduat-ing valves and depositing dirt or for-eign matter on their seat-. While the distributing valve is beingoperated it should be noted that properbrake cylinder pressure is obtained andmaintained upon various reductions ofbrake pipe pressure and that there isno increase or decrease of brake cylin-der pressure while the brake valve han-dles are on lap position. If the action of the distributing valveup to this time is apparently satisfac-tory it will become evident to the airbrake man that the following testsshould be conducted in order to deter-mine positively the condition of theoperative parts of the valve. In view of the manner in which theNo. 6 E. T. brake has been dealt within these columns during the past twoyears, methods of locating the source to the off-set in which the gradvalve is fastened. The tests that should be conduc
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