Table 2-1. Unit Level Preventive Maintenance Checks and Services for M113A2 FOVItemIntervalItem ToProcedureNot MissionNo.BeCapable If:Inspected66Semi-CoolingTest for antifreeze protection by use ofAntifreeze protec-AnnualSystema combination antifreeze and batterytion does not complytester.with Table 1.ContinuedTest for reserve alkalinity (corrosionTest kit indicatesprotection) by means of the Test Kit,the coolant is un-R e s e r v eAlkalinity(NSNsafe.6630-10-011-5039). Color indication ofthe test kit stick will determine condi-tion of the coolant and its potential cor-rosion protection. Instructions for useare as follows:Dip stick into coolant, and removeimmediately.Do not use teststick if coolant temperature is be-low 50° F (10° C) or if using a com-mercial brand antifreeze.Fifteen seconds after dipping, com-pare color on the stick with the colorchart on the container, and annotate.(a) Blue indicates coolant is safeto use.(b) Green indicates reserve alka-linity and corrosion protection ofcoolant is marginal but may beused safely until the next serviceinspection.NOTEDo not use antifreeze extenderadditive (MIL-A-53009) when ar-tic antifreeze is used in the cool-ing system.Yellowish green indicates the coolantis unsafe to use. If the DD Form 314identifies the coolant as the originalcharge, then add three percent by vol-ume (1 pint per 17 quarts) of the anti-f r e e z eextenderadditive(MIL-A-53009) to the cooling system.Change 3 2-87TM 9-2350-261-20-1
Integrated Publishing, Inc. - A (SDVOSB) Service Disabled Veteran Owned Small Business