(14)
 AMM 32-41-15/401, Landing Gear Brake Unit, Removal/Installation

 (15)
 AMM 71-00-00/201, Power PlantEquipment

 (1)  
MARK I COLDBUSTER Heater - External Cabin, Trailer Mounted, Diesel Powered, Spencer Industries, Inc. (Vendor Code 12008) 8410 Dallas Ave. S , Seattle, WA 98108-4423

Consumable Materials

 (1)  
D00109 Oil - Aircraft turbine engine, synthetic base

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A
747-400
MAINTENANCE MANUAL

 E.  Access
 (1)  
Location Zones
 100 Lower Half of Fuselage
 200 Upper Half of Fuselage
 300 Empennage
 400 Powerplant and Nacelle Struts
 500 Left Wing
 600 Right Wing
 700 Landing Gear and Landing Gear Doors
 800 Doors

 (2)  
Access Panel
 191NL Air Conditioning Access Door
 192HR Air Conditioning Access Door

 F.  Procedure
 S 553-003
 (1)  
Do the Cold Weather Maintenance procedure (AMM 12-33-01/301).

 S 583-004

 (2)  
Do the Park the Airplane (Normal Parking) procedure
 (AMM 10-11-01/201).

 S 883-005

 (3)  
Do one of the the steps that follow to maintain the cabin
 temperature at or above 32°F (0°C):

 (a)
Use the APU or a ground air source to run both ECS packs:

 1)  Do the Supply Conditioned Air to the Airplane procedure (AMM 21-00-00/201).

 (b)  
Use a heater, MARK I COLDBUSTER to heat the airplane through one of these panels: 1) 191NL Air Conditioning Access Door 2) 192HR Air Conditioning Access Door

 S 423-006
 (4)  Install the engine inlet and exhaust covers as soon as possible after landing.
 NOTE: Keep the engine covers in a warm location before you install
____ them on the airplane. Covers that are cold or frozen may be difficult to install, and may freeze to the engine inlet and exhaust.
 NOTE: At very low ambient air temperatures, the time for the engine
____ oil to cool to -27.4°F (-33°C) can be greatly increased by the use of engine inlet and exhaust covers.
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 12-33-02
 ALL  ú ú 01A Page 304 ú Oct 18/00
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 S 213-007
 (5)  Use the EICAS engine oil temperature indicator to monitor the engine oil temperature.
 (a)  
To view the oil temperature when the engines are not running, turn on the EEC ground test power.

 (b)  
If the engine oil temperature shown on the EICAS is -27.4°F (-33°C) do the steps that follow: 1) Remove the inlet and exhaust covers.

 CAUTION: MAKE SURE THE ENGINE CORE TEMPERATURE IS ABOVE
_______ THE -27.4°F (-33°C) BEFORE YOU START THE ENGINE. IF THE ENGINE OIL TEMMPERATURE IS BELOW -27.4°F (-33°C), DAMAGE TO THE ENGINE BEARINGS CAN OCCUR.
 2)  Heat the engine core to a minimum of -27.4°F (-33°C) with a heater, MARK I COLDBUSTER or suitable substitute. a) If you use a multiple hose ground cart heater, MARK I
 COLDBUSTER, direct one heater hose in the inlet to heat the engine core, and one heater hose on the engine gearbox.
 b)  If you use a multiple hose ground cart (YMP-350 heater), direct one heater hose in the inlet to heat the engine core, and one heater hose on the engine gearbox.
 c)  If you use a single hose ground cart (Herman Nelson heater), direct the heater hose on the engine gearbox.
 3)  Make sure the engine oil temperature on the EICAS is above -27.4°F (-33°C) to prevent damage to the engine bearings when you start the engines.
 NOTE: If the oil is colder than -58°F (-50°C), the EICAS
____ indication will be blank.
 a) See cold weather starting procedures (AMM 71-00-00/201). b) See engine operating limits (AMM 71-00-00/201).
　
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