ROl TUMBLE ENGINEER 35 



boys say, "lir and when I called his alter 



to the new valve bein^ in wrong, he was so completely 

 rattl he made use of the above expression. 



There are other causes that would prevent the pump 

 from working besides lack of packing and obstructions 



alves. The valve may stick. When 

 <1 to allow the water to flow through, it may stick 

 in the valve chamber and refuse to settle back in the scat. 

 This may be caused by a little rough place in the cham- 

 ber, or a little projection on the valve, and can generally 

 be remedied by tapping the under side of the check with 

 a wrench or hammer. Do not strike it so hard as to 

 bruise the check but simply tap it. If this don't remedy 

 the trouble, take the valve out, bore a hole in a board 

 about ] 2 inch deep and large enough to permit the valve 

 to be turned. Drop a little emery dust in this hole. 1 1 

 you haven't any emery dust, scrape some grit from a 

 common whetstone. I f you have no whetstone, put some 

 very fine sand or gritty soil in the hole, put the valve on 

 top of it, put your brace on the valve and turn it vigor- 

 ously for a few minutes, and you will remove all rough- 

 ness. 



Constant use may somtimes make a burr on the valve 



which will cause it to stick. Put it through the above 



>e and it will be as good as new. If this little pro- 



