SECTION II
CONTROLS AND OPERATION
When assured that the cooling system is clean, and in
6. After the hydraulic oil has warmed to a minimum of
good condition, refill the system with an ethylene/glycol
70 F. (21 C.), slowly and gradually actuate each
and water solution of the proper strength for the
cylinder a number of times, in turn, without allowing the
anticipated low temperatures.
cylinders to travel to the end of their stroke. Then slowly
swing the upper and operate the winches in both
directions. The oil in the lines and other components of
NOTE
these systems will thus be warmed.
A high quality corrosion inhibitor can
CAUTION
be added to the cooling system, if
Cold fluid makes relief valves
desired. Do not, however, use a
sluggish in operation. It can add 500
Chromate base inhibitor with an
to 1000 psi (34.5-68.9 bars) to the
ethylene/ glycol anti-freeze.
That
maximum pressure setting of the
relief valves. Therefore, extreme care
Hydroxide, commonly known as
must be used when actuating a cold
"green slime".
system to prevent a hose or tube
3. Keep the battery fully charged at all times. The
from rupturing, or causing other
electrolyte in a discharged battery will freeze at a higher
damage.
temperature than that in a fully charged battery.
7.
Before shutting down the machine, raise the
NOTE
outriggers to the stored position, and drive the machine
onto wooden planks or mats to prevent the machine from
If it is necessary to add water to the
being frozen to the ground.
battery, do so only immediately
before or during operation, or with an
Operation in
external charger connected to the
extreme heat presents special problems due to the
battery. Charging the battery, by any
difficulty in keeping the engine and hydraulic oil from
means, mixes the water and
overheating.
electrolyte, and thereby prevents the
water from freezing.
1.
recommendations for hot weather operation. Change
Keep the battery terminal connections clean and free
the lubricant if necessary.
from snow or ice which could short circuit the terminals.
Clean the cable connectors and battery posts thoroughly,
2. Make certain that the engine crankcase oil is at the
using a soda and water solution to remove corrosion.
proper level. An inadequate supply of crankcase oil will
In extremely cold weather, it is advisable to remove the
battery and store it in a heated area if the machine is to
3. Drain and flush the cooling system, to insure proper
be idle overnight or for any extended period.
circulation of coolant throughout the radiator core. Clean
the radiator cooling fins, particularly the air passages
4. Keep the fuel tank as full as possible at all times to
through the core, of insects, leaves, dirt, and other
foreign material that will restrict air flow.
supply, drain the tank and refill it with clean fuel.
4. Inspect the cooling system for leaks. Replace worn
5. Engage the pump drive and jog the starter for about
or damaged hoses. Tighten the hose clamps.
one minute to move hydraulic oil through the pumps,
thereby insuring proper lubrication of pump components.
5. Keep the water pump fan belt adjusted properly.
Then start the engine in accordance with the engine
manufacturers recommendations for cold weather
6. If the engine becomes overheated from lack of
starting, and run it at approximately 1200 RPM until the
coolant, let the engine run at a fast idle and add coolant
engine has warmed up.
slowly.
NOTE
7. If the engine overheats after refilling the cooling
Cover part of the radiator, to aid
system, shut down the engine and allow it to cool. Drain
warmup and to maintain engine
the cooling system by opening the drain cocks on the
running temperature. During warmup
radiator and the engine block, and flush out the system.
only, the entire radiator may be
Refill the cooling system with clean water; do not use salt
covered.
or mineral water solutions in the cooling system.
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