Instrument Panel (Earlier 4.5 L “270” Engines)

RG6574A-UN-07JAN03

Instrument Panel and Gauges (Earlier 4.5 L “270” Engines)

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

All controls and gauges are optional equipment for John Deere 4.5 L suffix “270” OEM Engines. They may be provided by the equipment manufacturer instead of John Deere.

IMPORTANT: Any time an electric gauge or meter does not register correctly, replace it with a new one. Do not attempt to repair it.

Following is a brief description of the components on a basic instrument (gauge) panel:

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 “ON” 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 “HEAT” 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 “HEAT” 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.

RG6574A-UN-07JAN03

Instrument Panel and Gauges (4.5 L “270” Engines)

G—Coolant Temperature Indicator Lamp - Warns operator that engine coolant temperature exceeds safe operating level. If lamp is lit during full load operation, the engine is overheated. Stop engine and immediately check fan belt tension and coolant level in radiator.

H—Key Switch - The key switch controls the electrical system. Positions of key switch are marked as follows: OFF, ON, and START. There is also a HEAT position for cold weather starting.