Section V. OPERATION UNDER UNUSUAL CONDITIONS
2-13. General
This section contains instructions for operating the
(2) Remove batteries from crane-shovel and
crane-shovel under special conditions that are unusual,
keep in heated storage area when not in use.
and not all of which are encountered in any one
e. Controls. Operation of control levers will be
operating area..
sluggish during extreme cold. Do not force levers into
first operation until after slow warming of engine has
2-14. Operation in Extreme Cold
a. General. As temperatures drop below freezing,
to assist in warming of clutches, brakes, and fluids.
metal and rubber parts become progressively more
brittle, and a relatively minor shock or jar can cause
f. Fuel System.
serious damage. Generally, craneshovels assigned
(1) Keep fuel tank as full as possible (refuel
work in extremely cold areas are winterized to take care
frequently) during cold weather to minimize
of these problems, but when conditions are encountered
condensation. If presence of water in fuel supply is
always remember to warm machine up slowly and
suspected, use suitable strainer while refueling.
carefully, and start all operations in low speed. Avoid
(2) Drain condensate from fuel tank fre
jerky handling and sharp impacts.
quently (para 3-14b).
Warning
(3) Service primary fuel filter more frequently
Do not touch metal parts with bare
(on models with engine 687C-18ES) (para 3-13).
hands during extreme cold, or
(4) Service secondary fuel filter more
serious and painful injury may occur.
frequently (para 3-13).
b. Lubrication.
(1) When temperature are below 0 keep
F
crane-shovel in a heated enclosure while not in use. If
g. Crawlers.
this is impossible, drain engine oil immediately after
(1) When
subzero
temperatures
are
halting operations for the day and store oil in a warm
expected, remove accumulations of mud from crawlers
place. If there is no warm place available for storage of
when halting operations for the day.
oil, preheat oil to approximately 180 before returning
F
(2) When parking crane-shovel overnight in
it to crankcase.
subzero temperatures never park in a muddy area
Caution
without cleaning off mud, and placing crane crawlers
Be
sure
a
tag
is
placed
upon planks.
conspicuously
in
operator's
Caution
compartment warning personnel that
When crawlers are frozen (in areas
crankcase is empty.
that were muddy when crane shovel
(2) Refer to current lubrication order LO
was parked), be sure and thaw mud
53810-20612 and use proper lubricants a described in
and ice from sprockets, chain and
key for the temperature expected.
track shoes, to avoid damage when
c. Cooling System.
traveling away from parking area, or
(1) The cooling system must be inspected
to new worksite.
and serviced with anti-freeze as directed in TB ORD 65;
2-15. Operation in Extreme Heat
(Use of Anti-freeze Solution and Cleaning Compounds
a. Cooling System.
in Engine Cooling Systems)
(1) Assure that system is clean, free flowing,
(2) Manufacture a cover out of card board
and remove all obstructions to air passage through
and cover enough of radiator core to assure coolant
radiator core.
temperature will rise to 160 (minimum operating
F
(2) Check coolant level frequently, and add
temperature).
water as required.
d. Electrical System.
(3) Check fan belt adjustment frequently.
(1) Keep electrolyte at least 8/8 inch above
(4) Keep cab sliding panels open, to insure
plates and batteries fully charged (table 1-1).
more air circulation around engine.
Caution
(5) Keep water pump and drive well
Do not add water to batteries in
lubricated (LO 5-3810-206-12).
subzero temperatures, unless engine
b. Engine.
is run for at least one hour after
(1) Check oil level frequently. Add oil when
addition.
The water will freeze
necessary (LO -5-3810-206-12).
unless
charging
(or
alternator) has an opportunity to mix
or convert to electrolyte.
2-31
