Show AVOID W CYLINDER HEAD Use Care In Tightening or J Loosening Engine Bolts By Dr GREER President nt College of Au Au- Au Electrical Trades Trade Chicago Ill III Cylinder heads hc d of o the detach detach- able oble bl variety like timing e etc covers ers transmission covers covert re shamefully abused by many who have ha occasion to an end replace them thero As Aa a result of this abuse poor satisfaction Is 1 Jotten often often experienced and serious crioli damage damart Is 1 sustained by the tha e en- en ca canine 1 nine where with proper roper lon t same i me member will give five long and satisfactory service MAY lAY WARP W CASTING C The cylinder clinder head hc d li is 0 to the cylinder block by a row ot of studs and antl nut nuts extending around round the edges In ordinary coa co i co I It H In applying or re- re removing re moving the thc head held these nuts nut are aro r tightened or loosened unevenly enormous enormous pressure will be b con con- concentrated concentrated con at a few points point result result- resulting ing tn In warping of the casting When once one warped a cylinder hc head d casting will not straighten out again and cannot again eln bo ho r ri ra turned to Its true shape by any even en tightening lightening of or I nuts nuts Many owners and repair repair- repairmen repairmen men of ot motor cars understand the necessity of even tightening nr nuts nut nui but fall fail to appy the same principle In the reverse operation Incontinently away at it one nut at a a time and an thus doing doing- as is much damage damata as asin asIn In in tightening one at a time lime METHOD The proper manner of ot remor- remor inic x a cylinder head held Is la to loosen all of the nuts nut about a quarter turn turn proceeding from one nut to the one as nearly diagonally onal opposite It as s possible repeat repeat- repeating repeating Fin ing the process until are ar loose enough to turn freely Each may then them be bo turned the rest of othe the way oft off Individually In re- re replacing I placing the tb same ame process should be b reversed rever ed each nut nut being screwed down until resistance Is felt and then tightening each a quarter turn In diagonal sequence until all are tight TAP T IT LIGHTLY Unless the head heRd Is badly gum gum- gummed gummed e emed med med In place with lead or car car- carbon carn car carbon bon hon It should be possible to loos loos- loosen loosen loosen en it by tapping around the edge ed with 0 a hammer This produces s vibration and the clearance of ot the th holes In the head around th the studs permits the head to move slightly sidewise to to break the bond so 10 that It may maybe m be lifted off oft I In raIsing th the head th-head head a thin screw driver should be used to pry the head up be- be beIng being ine be-ine Ing Inserted above the gasket casket and not below It I |