has a tendency to penetrate into bushings and bearings.
suspected, use suitable strainer while refueling.
Inspect; clean and lubricate at more frequent intervals.
(2) Drain condensate from fuel tank frequently
See paragraphs 3-3 and 3-4, and LO 5-3810-201-12.
(para 3-14a(2)).
b. Fuel System. Keep fuel tank cap on tight, and
(3) Service primary fuel filter more frequently
(on models with engine 687C-1-ES) (para 3-13).
wipe free of sand and dust before removing to refuel.
(4) Service secondary fuel filter more
Service fuel filters more frequently (para 3-13) to
frequently (para 3-13).
remove sand and grit. Service air cleaners (para 3-11)
g. Crawlers.
more frequently.
(1) When subzero temperatures are expected,
c. Turntable Roller Path. Do not allow lubricant to
remove accumulations of mud from crawlers when
accumulate on roller path. Clean frequently under dusty
halting operations for the day.
or sandy conditions, to prevent excessive wear.
(2) When parking crane-shovel overnight in subzero
temperatures never park in a muddy area without
brake bands frequently.
Use compressed air and
cleaning off mud, and placing crane crawlers upon
remove all sand or dust, or wipe clean. Failure to keep
planks.
bands clean will result in worn bands, scored drums, and
Caution: When crawlers are frozen (in areas
unsatisfactory operation.
e. Open Gears. Wash contaminated lubricant
that were muddy when crane-shovel was parked),
from all open gears and relubricate frequently, to
be sure and thaw mud and ice from sprockets,
eliminate excessive wear from sand and grit
chain, and track shoes, to avoid damage when
accumulations.
traveling away from parking area, or to new
f. Cables. Keep all unused cables in boxes.
worksite.
Clean and lubricate operating cables more frequently, to
prevent excessive wear and insure satisfactory
2-15. Operation in Extreme Heat
operation.
a. Cooling System.
g. Crawlers.
Inspect crawler and carbody
(1) Assure that system is clean, free flowing,
frequently for excess lubricant that results in
and remove all obstructions to air passage through
accumulation of sand or dust. Pay particular attention to
radiator core.
drive chains, sprockets, or gears, that wear easily.
(2) Check coolant level frequently, and add
Clean and relubricate frequently (LO 5-3810-201-12).
water as required.
(3) Check fan belt adjustment frequently.
2-17. Operation Under Rainy or Humid Conditions
(4) Keep cab sliding panels open, to insure
a. Fuel System.
more air circulation around engine.
(1) Wipe away all moisture from filler cap and
(5) Keep water pump and drive well lubricated.
neck before removing to service fuel tank.
See LO 5-3810-201-12.
(2) Keep fuel tank full to minimize
b. Engine.
(1) Check oil level frequently. Add oil when
(3) Drain condensate from tank daily (para
necessary. See LO 5-3810-201-12.
3-14a(2)).
(2) If engine becomes overheated from lack of
(4) Drain fuel filters frequently (para 3-13).
water, allow it to cool before adding water, then run
b. Bare Metal. Check crane-shovel carefully for
engine at fast idle while adding water.
signs of corrosion. Wipe all moisture from bare metal
c. Electrical System.
parts, and coat with lubricating oil, grease, or an
(1) Do not allow batteries to overheat in
approved rust preventive. If painting is required, report
service. Open battery box cover in extreme heat, and
the condition to organizational maintenance.
allow air to circulate around batteries.
c. Electrical System. Keep electrical components,
(2) Check electrolyte frequently in hot weather
connectors, and wiring clean and dry. Coat battery
and add water, unless water stands at least 3/s inch
terminals with a light coat of grease to prevent
above plates.
corrosion.
d. Lubrication. Lubricate more frequently in hot
d. Lubrication. Lubricate and service craneshovel
weather, changing lubricants when required by LO 5-
more frequently (LO 5-810-201-12).
3810-201-12.
Refer to paragraph 3-4 for detailed lubrication
instructions.
2-16. Operation in Dusty or Sandy Areas
a. lnspection and Lubrication. Fine sand or dust
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