3306 TRUCK ENGINE Caterpillar

Starting the Engine

Usage:

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Ether is poisonous and flammable.
Do not store replacement cylinders in living areas.
Do not smoke while changing cylinders.
Use only in well ventilated areas.
Use with care to avoid fires.
Avoid breathing of vapors or repeated contact with skin.
Do not puncture or burn cylinders.
Discard cylinders in a safe place.
Keep ether container away from heat, sparks, open flame, or open sunlight. It may explode.
Do not store replacement cylinders at temperatures above 49°C (120°F).

Do not use cylinders in environments above 93°C (200°F).

1. Place the transmission in NEUTRAL (and disengage the flywheel clutch, if so equipped).

2. Move throttle to low idle.

3. Turn the key switch to ON.

4. Turn the HEAT-START switch to HEAT or START, as indicated by the chart.

5. After the indicated heat time, move the switch to the START position, and if starting fluid is necessary, discharge the starting fluid capsule or spray starting fluid into the air cleaner inlet. (If the engine fails to start within 30 seconds, release the starter switch and wait 2 minutes to allow the starter motor to cool before using it again.)

6. As soon as the engine starts, allow the engine to idle 3 to 5 minutes or until the water temperature gauge has begun to rise. In cold temperature, turn the HEAT-START switch to the HEAT position until the engine runs smoothly at low idle.

7. Do not apply load to the engine or increase engine speed until the oil pressure registers on the gauge. (Oil pressure should raise to normal within 15 seconds after the engine starts.)

8. Operate the engine at low load until all systems reach operating temperatures. Check all gauges during warm-up period.

9. Inspect the air cleaner indicator (if equipped). If the indicator shows red, stop the engine and service the air cleaner element.

NOTE: Refer to the truck manufacturer's maintenance manual, for procedure to change the air cleaner element.

Gauges

Gauges provide a "look" inside the engine. Be sure they are in good working order. You can determine what is "normal" operating range by observing the gauges over a period of time. The cause of any sudden or significant change in the readings should be determined and corrected.

FUEL

Indicates the level of fuel in the tank. Electrically operated, it registers only when the key switch is ON.

FUEL PRESSURE

Indicator should register in the NORMAL (green) range. When the filter element becomes clogged, the indicator moves to OUT (red) 20 psi (140 kPa). When indicator registers below 30 psi, replace fuel filter element.

AMMETER

Indicates the rate of battery charge or discharge.

TACHOMETER

Indicates engine RPM.

OIL PRESSURE

Registers between 35 and 70 psi (240 and 480 kPa) when the engine is running at rated engine speed, with oil at operating temperature. A lower pressure is normal at low idling speeds. If no pressure is indicated, stop the engine immediately.

WATER TEMPERATURE