Instrument Panel - Mech. Cont. Engines Instrument Panel (Earlier 4.5 L Engines) All controls and gauges are optional equipment for John Deere 4.5 L suffix OEM Engines. They may be provided by the equipment manufacturer instead of John Deere. RG6574A –UN–07JAN03 IMPORTANT: Any time an electric gauge or meter does not register correctly, replace it with a new one. Do not attempt to repair it. Instrument Panel and Gauges (Earlier 4.5 L Engines) Following is a brief description of the components on a basic instrument (gauge) panel:
A—Tachometer with Hourmeter B—Coolant Temperature Gauge C—Oil Pressure Gauge D—Pre-Heat Indicator Lamp E—Charge Indicator Lamp F—Oil Pressure Indicator Lamp G—Coolant Temperature Indicator Lamp H—Key Switch A—Tachometer with Hourmeter - The optional tachometer with hourmeter indicates engine speed in revolutions per minute (rpm) and shows the operating hours of the engine while key switch is in the position. The hour meter should be used as a guide for scheduling periodic service. B—Coolant Temperature Gauge - The coolant temperature gauge indicates the engine coolant temperature.
It is connected to a warning lamp to warn the operator if coolant temperature rises above the preset, safe operating temperature. C—Oil Pressure Gauge - The oil pressure gauge indicates engine oil pressure. It is connected to a warning lamp to warn the operator if engine oil pressure falls below a safe operating pressure. D—Pre-Heat Indicator Lamp - This indicator lamp is initially turned on when the key switch is turned to the position to activate the preheater for cold weather starting. Lamp is connected to a timer that turns the lamp off after 15 seconds when the key switch is held at position. When the lamp goes out, start the engine.
E—Charge Indicator Lamp - Indicates whether the charging circuit is adequately replacing battery voltage as it is used by the electrical system. If the lamp is lit while the engine is running above 1300 rpm, stop engine immediately and check charging circuit. Continued on next page OURGP11,000018E –19–12FEB04–1/2 18-1 021604 PN=95