TM 5-3895-374-101. Aggregate Scale CalibrationItemProcedure1Check the initial feeder calibration prior to starting.2If it has not been set previously, enter the feeder rate of 50 tons per hour onto the monitor foreach feeder.3Set the control gates on the feeders to a five inch opening.4This puts the feed rate for calibration purposes at an approximate value suitable for calibratingthe aggregate scale.5Weight the truck to be used. Follow the instructions regarding truck weighing that appear inappendix E.6Inspect the feed conveyor.7Verify that all pulleys and return rolls are clean and free from materiel build up.8Inspect the belt to see that it is clean and free from materiel build up.9Remove build up from on any of these components prior to beginning calibration.10Check the belt to see that it is trained and running centered on the pulleys and idlers.11If not, train belt prior to calibrating.12Inspect counter weight on gravity take-up. Remove any materiel build up prior to calibration.13Feeder panel-select DIVERT on the Auto/Divert/Drum selector switch.14Motor control panel-select BYPASS on the DrumInterlock selector switch.15Feeder panel-press START on the FeedConveyor button. This belt should run for at least fifteen(15) minutes prior to calibrating.16Back a truck up to the bypass chute on the drum mixer (the extension to the chute must beinstalled if not already in place).17Place the deflector gate so that the aggregate falling into the chute is directed into the truck box.18(Be prepared to shovel the materiel from the back of the truck box to the front if necessary.)page 2-87
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