Document 1Qe241eDODBD6O6apjGVxbpXE

ID {44fek charge valves. (3) unequal distribute lion of work between crank end head | ends of steam cylinder caused by a * alow-acting dashpot or by a leaking crank end steam valve. (4) excessive clearances on crankpin and crosshead bearings caused by changing the' brasses, but not properly fitting them to the worn pins. Causes (1) and (2) may be detected, by reference to Indicator diagram taken from air cylinder, followed by., inspection of air-valve chambers for' evidences of broken or plugged valves. Cause (3) requires inspection of dashpot mechanism for evidences of a' plugged air-release port, s broken re,T turn spring or an air leak into the vacuum chamber. Steam valve should be removed and edges of vslve and seat inspected for erosion caused by occumu.- lslions of water in cylinder or valve; cheat. Cheek operating methods to de-i termine If cylinder and steam cheat are' properly drained before starting the en gine. Cause (4) requires that leads he taken from crankpin and crosshead bearings for checking clearances. These clearances should be about one the*, sandth of an inch per inch of pin diam eter. Total clearance may be reduced slightly if the brasses are scraped to s good bearing on the pins. J After reeking inspections snd tests outlined A/S should check his valve set tings with the manufacturer's mark*--; --Milton N Kraus, Sunnyslde, L .1- Check Nut on Piston Rod j Wk iud a vertical corliss engine in 1925, that pounded badly on bottom center. At times it pounded on every revolution and then ran quietly for several second* Occasionally it pounded every other revolution for minutes at a time.' * * investigation showed there was to-, sufficient thread on the piston rod, and bottom aide of nut did not actually beuj on the piston. Since the nut was coufl; terbored into the piston, ono could not see when it came into contact and iu tightness on the thread was mistakes for iu bearing on the pistoo. ( suggest A/S check this point.--C A Wilke*! Oaklyn, N. Y. Advance Eccentric To End Pounding IrtoiCAton cards taken by A/S show ih reason for eogino's pounding. If *' weren't a vertical urtH it would poutfj on top center as well os-bottom; weigh of the line of parts stops that. Doth ends of cylinder show late stesc snd exhaust timing, which means (hi POWER Job I"] MCOAL PREPARATION at 1000 TONS per HOUR with TWIN AMERICANS" And the Complete Crushing Anils Occupy only 12 x12 x12' 110,000 kilowatt output represents converting 1200 tons ol coal per day Into power . . . Continuous pulverizer feed from bunkers kept at constant level of J4" by conveyors from the two "Type $ No. 60" American Ring Crushers which reduce the 16" ROM bituminous coal. Direct-connected with two 200 HP 720 RPM motors, the Americans employ efficient shredder ring action with on unusually conservative power dcaiond. The uniform product ,and the dependability of Ameri cans ore considered essential to the unfailing, high output of the Ohio Power Co. and other power plants throughout the world. Americans offer a complete crushing plant in one compact unit,--no auxiliary crush#r* or rfuse picking operations oro required. Httt lb* cempectnett f arts end tsediwn In vSkh thill ti direct leeter-ceentcud Mednt iOS Anerkem ere Imtollnd Including hy-ooii bet-Mtft. CretJ ucllen ihm AmeHeeni patented MtradSir rt*8 ectten. leeb ikmddtt Hug revelvet ee let eve ibeft ed eetMesHcellv de fineti (ren miep Iren. Send tor the feels on efficiency of coal prepara* Hon in power plants with American Crashers. >OW|, . July I94U PULVERIZER COMPANY CtuiAe* W PutaeU}*** 1349 MackliAd Are* St. Louis 10, Mo.