Terex Genie S-120 Service Manual

Also see for Genie S-100: Maintenance manual Maintenance manual Maintenance manual Operator's manual supplement Operator's manual

Section 3 • Scheduled Maintenance Procedures3 - 18 S-100 • S-105 • S-120 • S-125 Part No. 102916January 2016Checklist B ProceduresB-1Inspect the BatteriesGenie specifications require that this procedure beperformed every 250 hours or quarterly, whichevercomes first.Proper battery condition is essential to goodengine performance and operational safety.Improper fluid levels or damaged cables andconnections can result in engine componentdamage and hazardous conditions. There are 2batteries on the machine. One starts the engineand the other powers the control system. Thebatteries are charged by the alternator through abattery separator.Electrocution/burn hazard. Contactwith hot or live circuits could resultin death or serious injury. Removeall rings, watches and otherjewelry.Bodily injury hazard. Batteriescontain acid. Avoid spilling orcontacting battery acid. Neutralizebattery acid spills with baking sodaand water.1 Open the engine side cover.2 Be sure that the battery cable connections arefree of corrosion.Note: Adding terminal protectors and a corrosionpreventative sealant will help eliminate corrosionon the battery terminals and cables.3 Be sure that the battery retainers and cableconnections are tight.4 Fully charge the batteries. Allow the batteries torest 24 hours before performing this procedureto allow the battery cells to equalize.5 Put on protective clothing and eye wear.6 Remove the battery vent caps and check thespecific gravity of each battery cell with ahydrometer. Note the results.7 Check the ambient air temperature and adjustthe specific gravity reading for each cell asfollows:• Add 0.004 to the reading of each cell forevery 10° / 5.5° C above 80° F / 26.7° C.• Subtract 0.004 from the reading of each cell forevery 10° / 5.5° C below 80° F / 26.7° C.Result: All battery cells display an adjustedspecific gravity of 1.277 +/- 0.007. The batteryis fully charged. Proceed to step 11.Result: One or more battery cells display aspecific gravity of 1.269 or below. Proceed tostep 8.8 Perform an equalizing charge OR fully chargethe batteries and allow the batteries to rest atleast 6 hours.9 Remove the battery vent caps and check thespecific gravity of each battery cell with ahydrometer. Note the results.