front of the crawler (idler sprocket toward front) under
and engage the right hand jaw clutch. The crane-shovel
the front end of the upper revolving machinery.
will turn to the left when the swing/propel lever is pushed
(3) When travel is completed, and craneshovel
away from the operator.
is in position for next task, disengage steering wheel by
(c) Position number three. Starting with
lifting engaging lever (fig.2-24) up.
wheel in position number one, turn wheel two turns
f. Operation of Front End Components. Operation
clockwise. This will release both propel brakes, and
of the various front end components are properly
engage both jaw clutches. The crane-shovel will travel
described in the section devoted to auxiliary materiel
straight ahead when the swing/propel lever is pushed
used in conjunction with the craneshovel as listed below.
away from operator.
(1) Crane operation (para 2-28).
(d) Position number four. Turn steering
(2) Clamshell operation (para 2-29).
wheel clockwise as far as it will go. This will set the right
(3) Dragline operation (para 2-30).
hand brake and engage the left hand jaw clutch. The
(4) Shovel operation (para 2-31).
crane-shovel will turn to the right when the swing/propel
(5) Backhoe operation (para 2-32).
lever is pushed away from operator.
(6) Piledriver operation (para 2-33).
Note. All travel directions are given with the
(7) Jib boom operation (para 2-34).
Section V. OPERATION UNDER UNUSUAL CONDITIONS
(3) Winterized models are protected by
2-13. General
heaters, and operating instructions are furnished in
This section contains instructions for operating the
crane-shovel under special conditions that are unusual,
c. Cooling System.
and not all of which are encountered in any one
(1) The cooling system must be inspected and
operating area.
serviced with anti-freeze as directed in TB ORD 651
(Use of Anti-freeze Solution and Cleaning Compounds
2-14. Operation in Extreme Cold
in Engine Cooling Systems).
a. General. As temperatures drop below freezing,
(2) On non-winterized models, fashion cover
metal and rubber parts become progressively more
out of card board and cover enough of radiator core to
brittle, and a relatively minor shock or jar can cause
assure coolant temperature will rise to 1600 F (minimum
serious damage. Generally, crane-shovels assigned
operating temperature). On winterized models close
work in extremely cold areas are winterized to take care
winterfront shutters as required (para 2-8).
of these problems, but when conditions are encountered
d. Electrical System.
always remember to warm machine up slowly and
(1) Keep electrolyte at least 8/8 inch above
carefully, and start all operations in low speed. Avoid
plates and batteries fully charged (table 1-1).
jerky handling and sharp impacts.
Caution: Do not add water to batteries in
Warning: Do not touch metal parts with bare hands
subzero temperatures, unless engine is run for at least
during extreme cold, or serious and painful injury may
one hour after addition. The water will freeze unless
occur.
charging generator (or alternator) has an opportunity to
b. Lubrication.
mix or convert to electrolyte.
(1) When temperatures are below 0 F and
(2) Remove batteries from non-winterized
unit is not winterized, keep crane-shovel in a heated
crane-shovel, and keep in heated storage area when not
enclosure while not in use. If this is impossible, drain
in use.
engine oil immediately after halting operations for the
e. Controls. Operation of control levers will be
day and store oil in a warm place. If there is no warm
sluggish during extreme cold. Do not force levers into
place available for storage of oil, preheat oil to
first operation until after slow warming of engine has
approximately 1800 F before returning it to crankcase.
Caution : Be
sure
a
tag
is
placed
to assist in warming of clutches, brakes, and fluids.
conspicuously in operator's compartment warning
f. Fuel System.
personnel that crankcase is empty.
(1) Keep fuel tank as full as possible (refuel
(2) Refer to current lubrication order LO 5-
frequently) during cold weather to minimize
3810-201-12 and use proper lubricants as described in
condensation. If presence of water in fuel supply is
key for the temperature expected.
2-33
