COLD WEATHER STARTING

above 10 without using starting aids. If temperature is

Turn the start switch to START position. Start

below 10 , a starting aid may be necessary and/or

the engine using starting aids as necessary.

crankcase oil may need to be heated.

If the engine fails to start after 30 seconds of

ETHER- - Ether is much more volatile than diesel fuel

cranking, allow the starter to cool for two minutes before

and is used to start combustion of the fuel-air mixture.

repeating the starting procedure.

CAUTION

WARNING

Do not engage the starter when the

Ether is volatile and must be stored away

flywheel is moving.

from heat and direct sunlight See the

instructions on the container.

As the engine starts, release the start switch. It

will return to the RUN position.

Engine mounted either dispensers are available

commercially. Aerosol cans can also be used. Point the

Clearances and tolerances are designed for operating

can opening at the air inlet and give a quick spray while

conditions including operating temperature. After the

cranking the engine.

Too much ether will cause

engine is started it takes several minutes to establish the

excessively high pressure and detonation. Liquid ether

lubricating oil film and allow the moving parts to heat up

can be used by pouring a small amount on a cloth and

and expand. Loading a cold engine will cause shortened

holding the cloth in front of the air cleaner while the

service life; i.e., broken rings, seized pistons, etc. This

engine is cranking. Be sure the cloth is outside the air

warm up period allows time for another "walk-around"

cleaner and cannot be drawn into the engine.

check for leaks, etc.

WARNING

DO NOT use ether after the engine has

Do not attempt repairs or adjustments

started. DO NOT inhale ether fumes.

while the engine is running.

In extremely cold climates, additional aids such as

COLD WEATHER STARTING

water heaters and battery heaters may be used. Contact

your Caterpillar dealer before installing submersible

These engine; are designed to start at temperatures

crankcase oil heaters.

STOPPING

Reduce speed to low idle for about 30 seconds.

Remove the load from the engine.

Stop the engine by turning the START switch to

Allow the engine to run at about half speed for

OFF. The governor control will not stop the

five minutes. This allows internal temperatures

engine. If an engine is going to be put in

to reduce gradually and prevents the loss of

storage see your Caterpillar dealer for storage

coolant by "afterboil".

instructions.

ATTACHMENTS

GAUGES

Gauges provide a "look" inside the engine. Be sure they

immediately if a sudden loss of oil pressure occurs.

are in good working order. You can determine what is

"normal" operating range by observing the gauges over a

WATER TEMPERATURE The operating temperature is

period of time. The cause of any sudden or significant

maintained by the water temperature regulator. High

change in the readings should be determined and

coolant temperatures mean the cooling system is not

corrected.

dissipating enough engine heat.

OIL PRESSURE Oil pressure is normally greatest after

The minimum operating temperature should not be below

starting a cold engine. As the oil warms up the pressure

1750. If the temperature gauge continues to indicate

drops. Oil pressure is greater at operating speeds than at

below 1750 while operating, have the gauge checked for

low idle. Fluctuating readings can mean air in the oil or a

accuracy and the thermostats checked for proper

sticking pressure relief valve.

Stop the engine

operation.