1.5.5.6
Engines.
•
Engine heat on shutdown melts ice accumulated during
À
ight and the resulting moisture will refreeze in the
lower sections of the front stator and rotor blades. An attempted engine start may result in starter failure. If
engine is not free to rotate, external heat must be applied to forward engine sections to produce thawing. Start
the engines as soon as possible after the application of heat in order to remove all moisture before refreezing
can recur.
•
If icing conditions are present, turn on nacelle anti-icing immediately after each engine start. Failure to comply
can result in fan engine blade damage due to ice ingestion
•
During sub-zero weather starts, engine oil pressure may exceed speci
¿
ed idle limits. If normal oil pressure is
not indicated within 3 minutes, shut down engine. Do not restart engine until problem has been corrected.
Failure to comply may result in damage to engine.
NOTE
To determine how long it would take engine oil to reach ambient conditions where preheat procedures would be
required, apply the following: If an engine were not shut down on a -65 °F (-54 °C) day with a 5 mph wind, the
oil temperature in the tank would cool to -40 °F (-40 °C) after 5 to 6 hours, and would require another 1 to 2 hours
to reach ambient temperature (-65 °F/-54 °C). If the wind were 10 mph, the cooling time would be reduced by a
factor of 1.4 (i.e., a 5-hour cooldown would reduce to 3.6 hours). If the same engine were shut down on a -40 °F
(-40 °C) day in a 5 mph wind, the oil tank temperature would reach -40 °F (-40 °C) in 6 to 7.2 hours after
shutdown.
a. When starting an engine below -40 °F (-40 °C) at all altitudes or below -25 °F (-32 °C) above altitudes of 8,000 feet,
preheat oil tank and accessory gearbox for 30 minutes. Preheating is performed by blowing hot air (158 °F/70 °C)
from a ground unit into the oil servicing door for 30 minutes (oil tank) and into the pressure relief door on the LH
thrust reverser in the area of the accessory gearbox.
b. The following are alternate engine start procedures for cold weather:
(1) To start an engine from an APU with Mobil Jet II in the engine oil tank when conditions in Step a. are met, one
hydraulic pump should be pressurized, the other depressurized, and the engine oil tank an accessory gearbox
preheated prior to starting. (See Step a.)
(2) For cross engine starting, adhere to the following requirements: From -25 °F to -40 °F (-32 °C to -40 °C), at all
altitudes, with Mobil Jet II oil in the engine oil tank, the operating engine power should be increased to 25 to 40
percent N1 to provide a minimum of 38 PSIG in the cross ship manifold. Below -40 °F (-40 °C), with Mobil Jet
II, preheating of the engine oil tank an accessory gearbox is required. (See Step a.)
c. After exposure for greater than 4 hours to sustained temperatures below 0 °F, the hand pump used for manually
opening and closing thrust reverser doors may not operate normally. In such extreme cold condition, it may be
necessary to apply external heat to the pump or store the pump in an environmentally controlled location prior to use
for satisfactory operation.
1.5.5.7
ATM, Power Transfer Units, Engine Pumps, and APU.
a. At temperature of -40 °F (-40 °C) and below, be alert for signs of severe cavitation of ATM pumps, power transfer
units (PTU), or engine pumps. Violent pressure
À
uctuations, failure of pressure to build up, unusual noises, and heating
up of the unit may indicate serious cavitation that can result in ending or shortening the life of the pump. The affected
hydraulic system should be promptly shut down. Intermittent brief restart attempts along with continued operation of
the system electric suction boost pump may ultimately produce normal operation. Other cases, however, may require
more extensive correction action, e.g., heating of reservoir, pump, or inlet lines; remedying suction blockage, etc.
TO 1C-5M-2-1
1-36
Содержание C-5M
Страница 12: ...TO 1C 5M 2 1S 1 Figure 1 21 Circuit Breaker Locations Sheet 6 10...
Страница 13: ...TO 1C 5M 2 1S 1 Figure 1 21 Circuit Breaker Locations Sheet 13 11...
Страница 14: ...TO 1C 5M 2 1S 1 Figure 3 34 Crew Lavatory Waste Servicing AF68 0213 AF68 0216 and AF69 0024 12...
Страница 15: ...TO 1C 5M 2 1S 1 Figure 3 34 1 Tank Cleaning Adapter 13...
Страница 16: ...TO 1C 5M 2 1S 1 Figure 3 34 2 Toilet Maintenance Switch 14...
Страница 32: ......
Страница 40: ......
Страница 82: ...Figure 1 1 Airplane Dimensions TO 1C 5M 2 1 1 42...
Страница 83: ...Figure 1 2 Major Component Weights Sheet 1 of 3 TO 1C 5M 2 1 1 43...
Страница 84: ...Figure 1 2 Major Component Weights Sheet 2 TO 1C 5M 2 1 1 44...
Страница 85: ...Figure 1 2 Major Component Weights Sheet 3 TO 1C 5M 2 1 1 45...
Страница 86: ...Figure 1 3 Airplane Stations Sheet 1 of 8 TO 1C 5M 2 1 1 46...
Страница 87: ...Figure 1 3 Airplane Stations Sheet 2 TO 1C 5M 2 1 1 47...
Страница 88: ...Figure 1 3 Airplane Stations Sheet 3 TO 1C 5M 2 1 1 48...
Страница 89: ...Figure 1 3 Airplane Stations Sheet 4 TO 1C 5M 2 1 1 49...
Страница 90: ...Figure 1 3 Airplane Stations Sheet 5 TO 1C 5M 2 1 1 50...
Страница 91: ...Figure 1 3 Airplane Stations Sheet 6 TO 1C 5M 2 1 1 51...
Страница 92: ...Figure 1 3 Airplane Stations Sheet 7 TO 1C 5M 2 1 1 52...
Страница 93: ...Figure 1 3 Airplane Stations Sheet 8 TO 1C 5M 2 1 1 53...
Страница 94: ...Figure 1 4 Danger Areas Sheet 1 of 17 TO 1C 5M 2 1 1 54...
Страница 95: ...Figure 1 4 Danger Areas Sheet 2 TO 1C 5M 2 1 1 55...
Страница 96: ...Figure 1 4 Danger Areas Sheet 3 TO 1C 5M 2 1 1 56...
Страница 97: ...Figure 1 4 Danger Areas Sheet 4 TO 1C 5M 2 1 1 57...
Страница 98: ...Figure 1 4 Danger Areas Sheet 5 TO 1C 5M 2 1 1 58...
Страница 99: ...Figure 1 4 Danger Areas Sheet 6 TO 1C 5M 2 1 1 59...
Страница 100: ...Figure 1 4 Danger Areas Sheet 7 TO 1C 5M 2 1 1 60...