BATTERY 6Y 6 temperature As temperature increases the electrolyte INSTALLING BATTERIES expands so that the specific gravity is reduced As tem perature drops the electrolyte contracts so that the spe To msmll 3 Bottom moporlyl lt is important to ob cific gravity increases Unless these variations in spe Servo tho followmg prooautloosl cific gravity are taken into account the specific gravity o Colmoot groumlod tormmol of Bottom lost to avoid obtained by the hydrometer may not give a true indication Short olroults Whloh may damogo tho olootmoal of the concentration of acid in the electrolyte System A fully charged Battery will have a specific gravity Be sure there are not foreign objects in the carrier reading of approximately 1 270 at an electrolyte tempera so that the new Battery will rest properly in the bot ture of 800F If the electrolyte temperature is above or tom of the carrier below 800F additions or subtractions must be made in Tighten the hold down evenly until snug 60 80 in order to obtain a hydrometer reading corrected to the lbs Do not draw down tight enough to distort or 800F standard For every 100 above 800F add four spe crack the case or cover cific gravity points 004 to the hydrometer reading Be sure the cables are in good condition and the ter Example A hydrometer reading of 1 260 at 1100F would minal clamps are clean and tight Make sure the be 1 272 corrected to 800F indicating a fully charged ground cable is clean and tight at engine block or Battery For every 100 below 800F subtract four points frame 004 TYOTTT the T diTTg Example A hYdT Om t T mad Check polarity to be sure the Battery is not reversed ing of 1 272 at 00F would be 1 240 corrected to 800F in with respect to the generating SyStem dicating a partially charged Battery o Oil the battery terminal felt washer Do not drive cable terminals onto post with hammer SPECIFIC GRAVITY CELL COMPARISON TEST or OthgI tOO1S This test may be used when a instrument tester is not available To perform this test measure the specific REPLACEMENT Fig 8b gravity of each cell regardless of state of charge and interpret the results as follows 1 Disconnect Battery negative and positive cables if specific gravity reedines sncw n difference between 2 nteennnect Battery vent covers from vent pings the highest and lowest cell of 050 50 points or 3 Remove Battery ho1d doWn clamp bolt and clamp more the Battery is defective and should be replaced 4 Remove Battery from tray and transfer vent cover to replacement Battery 5 Position new Battery which has been properly acti B V vated in the Battery tray 6 Install Battery clamp and bolt DO NOT SUCK HOLD NOTE Recommended hold down bolt torque is IN too MUCH TUBE 60 00 in une tttcnzomt VERTICAL T 7 Connect Battery vent covers to vent plugs 8 Connect Battery positive and negative cables FLOAT MUST V Q BT TREE CAUTION To insure good contact the Battery l cables should be tight on the Battery posts Oil M A W the Battery terminal felt washer If the Battery t i I V t 7 F I 0 T bles should be cleaned separately with a soda J A solution and a wire brush After cleaning and L it I M installing clamps apply a thin coating of petro llvn TAKE READING latiglm to the post anclll cable gllalnps to help re r AT EYE LEVEL ar corrosion ee iglre or correc in stallation of cable terminal clamps Cable ter T or permanent set and loose connections will Fig 7b Testing Specific Gravity I SU t CORVAIR SHOP MANUAL SUPPLEMENT