SEBU7901-01 25 Operation Section Gauges and Indicators Note: The default high idle rpm and the full load rpm are stamped on the Information Plate. Ammeter This gauge indicates the amount of charge or of discharge in the battery charging circuit. Operation of the indicator should be to the right side of “0”(zero). Service Hour Meter This gauge indicates the total number of clock hours of engine operation. Hours of operation are logged in the ECM. A service tool is needed to retrieve the hours from the ECM. A Service Hour Meter may be installed on the engine. Fuel Pressure This gauge indicates fuel pressure to the electronic unit injectors from the fuel filter.
The indicator should indicate the “NORMAL” range. A decrease in fuel pressure usually indicates a plugged fuel filter. Fuel Level This gauge indicates the level of fuel in the fuel tank. The fuel level gauge registers the fuel level only when the ignition switch is in the ON position.