(1) When operating in mud, or water, check
2-18. Operation in Salt Water Areas
footing of crane-shovel frequently to avoid
a. Electrical System. Keep electrical connections
tipping.
clean and dry. Coat battery terminals with grease to
(2) When fording a body of water be careful of
prevent corrosion.
hidden boulders or deep holes. Use dipper or weighted
b. Bare Metal. Check all bare metal surfaces.
hook block to feel the way across, stopping crane travel
Wipe dry, and lubricate with oil or grease. If
to swing from side-to-side to detect boulders. Lower
painting of surface is necessary, report condition to
dipper or hook to measure depth of water and avoid
organizational maintenance.
dangerous holes.
b. Lubrication.
Lubricate
crane-shovel
lubrication order (LO 5-3810-201-12), and lubricate
immediately after washing or fording.
Keep all
more frequently.
operating mechanism thoroughly lubricated(LO 5-
d. Cooling System. Do not use salt water in the
3810-201-12).
crane-shovel cooling system.
2-21. Operation at High Altitude
2-19. Operation in Snow
a. With Model 687C-18-ES Engine. The blowers
a. General.
Operation in snow combines
on this engine operates satisfactorily at higher altitudes
conditions found in extreme cold, and humid conditions.
without special attention. Service of air cleaner (para
Accumulations of snow turns to ice, and is damaging to
gears, or chains, and will contaminate fuel system.
b. Fuel System.
b. With Model D333TA Engine. This turbocharged
(1) Wipe all snow away from fuel filler cap
engine operates best when operating at altitude
before servicing crane-shovel fuel tank.
specified on warning plate installed on valve cover. The
(2) Drain condensate from fuel tank frequently
highest altitude at which the engine may be safely
(para 3-14a(2)).
operated, without resetting, is listed on this plate. The
(3) Keep fuel tank full to minimize
engine must be reset for higher altitudes. It may be
operated at a lower altitude without danger of engine
c. Crawlers. Remove all accumulations of snow
damage, but at less than maximum performance.
from crane-shovel crawler to prevent snow from turning
to ice and causing damage.
2-22. Operation Below Sea Level
d. Parking. When possible, lay boards on snow
a. With Model 687C-18-ES Engine. This engine
and drive crawlers up on them, then use compressed air
will operate satisfactorily at altitudes below sea level
to blow away all snow accumulations from gears;
without special adjustment.
chains; sprockets; cable drums; sheaves of bucket, hook
b. With Model D333TA Engine. This turbocharged
block or boom.
engine will operate at altitudes below sea level without
danger of damage to engine but with reduced efficiency.
2-20. Operation in Mud or Deep Water
Long periods of operation at low altitudes should not be
a. General.
attempted without reporting details to proper authority,
so that required adjustments may be accomplished.
Section VI. OPERATION OF AUXILIARY MATERIEL USED IN
CONJUNTION WITH CRANE SHOVEL
extinguisher may be used in temperatures below -25 F.
2-23. General
This extinguisher is a 21/2 pound, stored pressure,
This section furnishes information on operation of
lever-operated fire extinguisher.
auxiliary materiel used on, or with the craneshovel.
b. Operation.
Cold weather starting aids, fire extinguisher, heaters,
(1) Remove fire extinguisher from its mounting
trouble light, and front end attachments are covered in
bracket on inside of cab, at right of operator's seat.
succeeding paragraphs.
(2) Lift handle; press lever, and direct powder
at base of flame by using a side-to-side sweeping
2-24. Fire Extinguisher (Dry Chemical Type)
motion.
a. Description. The dry chemical type fire extinguisher
c. Maintenance.
is suitable for use on all types of fire, and is effective in
(1) Inspect for broken seal.
areas where ambient temperature is -25 F and above.
When winterized, (pressurized with nitrogen) the fire
2-35
