286 



PC PASSENGER-BRAKE EQUIPMENT 



the emergency portion, must be specified when ordering repair 

 parts for the No. 3-D control valve, otherwise all repair parts 

 for both valves are identical. 



Pe. No. Ref. No. Name of Part 



32,458 107 Body, bushed and plugged, includes 119. 



36,572 108 Piston, complete, includes 109 and 120. 



10,030 103 Piston ring. 



32,703 110 Slide valve. 



32,045 111 Slide-valve spring. 



32.151 112 Small cylinder cap. 



32.152 113 Large cylinder cap. 

 32,080 114 Small cylinder -cap gasket. 

 32,079 115 Large cylinder-cap gasket. 



1,745 116 Piston spring. 



25,418 117 Square head capscrew for small cylin- 

 der cap, i in. Xls in. 



- 32,106 118 Oval fillister head capscrew. 

 31,928 119 Emergency-piston bush. 

 36,569 120 Spring stem. 



CONSTRUCTION OF CONTROL VALVE 



The control valve takes the place of the triple valve of the 

 older equipments, and, in a general way, corresponds to the 



FIG. 1 



distributing valve of the ET equipment. The external con- 

 struction of the control valve is shown in Pig. 1, which gives a 



