PN 57.4400.0100_020115 - Genie

Section 4Preventive Maintenance700 SeriesHow to check the specific gravity of thecoolantFor mixtures which contain inhibited ethylene glycol:1 Ensure that the machine is on level ground.2 Operate the engine until it is warm enough to openthe thermostat. Continue to run the engine until thecoolant has circulated the cooling system.3 Stop the engine.4 Allow the engine to cool until the temperature of thecoolant is below 60 o C (140 o F).Warning! Do not drain the coolant while the engineis still hot and the system is under pressure becausedangerous hot coolant can be discharged.5 Remove the filler cap of the cooling system.6 Drain some coolant from the cooling system into asuitable container.7 Use a special coolant hydrometer that will checkthe temperature and the specific gravity of thecoolant, follow the manufacturer's instructions.Note: If a special coolant hydrometer is not available,put a hydrometer and a separate thermometer intothe antifreeze mixture and check the readings on bothinstruments. Compare the readings with the chart (A).8 Adjust the strength of the mixture as necessary.Note: If it is necessary to fill or replenish the coolantsystem in service, mix the coolant to the correctstrength before it is added to the coolant system.Perkins POWERPART antifreeze with aconcentration of 50% will give protection against frostto a temperature of -35 o C (-31 o F). It will also giveprotection against corrosion. This is especiallyimportant when there are aluminium components inthe coolant circuit.Specific gravity chartA = Percentage antifreeze by volumeB = Mixture temperature in FahrenheitC = Specific gravityD = Mixture temperature in celcius05/99Printed in England© Propriety information of Perkins Engines Company Limited, all rights reserved2057.4400.0100TX51-19M-1-SM 01-29-02351