D. Consumable Materials
(1) D00109 Oil, Aircraft turbine engine, synthetic base - MIL-L-7808
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737-300/400/500MAINTENANCE MANUAL
E. Access
(1)
Location Zones
100 Lower Half of Fuselage
200 Upper Half of Fuselage
300 Empennage
400 Power Plant and Nacelle Struts
500 Left Wing
600 Right Wing
700 Landing Gear and Landing Gear Doors
800 Doors
(2)
Access Panels
(a)
1103L Forward Access Door
(b)
1201L Electronic Equipment Access Door
(c)
1304L Ground Conditioned Air Door
F. Procedure
S 663-040
CAUTION: IF YOU CAN DRAIN THE FUEL FROM THE DRAIN VALVE AFTER YOU
_______ APPLIED HOT AIR TO THE EXTERIOR FOR 3 TO 5 MINUTES, DO NOT THINK THAT ALL THE ICE IS MELTED. THE ICE ADJACENT TO THE DRAIN VALVE UNIT CAN MELT AND LET SOME WATER AND FUEL TO FLOW FROM THE DRAIN. BUT, A PIECE OF ICE CAN STAY BEHIND. IF THE FUEL DOES NOT FLOW FROM THE DRAIN, CONTINUE TO APPLY HOT AIR FOR A SHORT TIME, AND FREQUENTLY DO A CHECK OF THE FLOW FROM THE DRAIN. CATCH THE FUEL IN A CONTAINER AND MAKE SURE ALL OF THE WATER IS REMOVED.
THE HEAT APPLIED TO THE SUMP DRAIN VALVES FOR THE OUTBOARD MAIN AND RESERVE TANKS WILL NOT REMOVE THE ICE WHICH HAS COLLECTED IN THE TANK SUMP OR IN THE DRAIN LINE BETWEEN THE TANK SUMP AND VALVE. TO REMOVE THIS ICE, YOU MUST PUT THE AIRPLANE IN A WARM HANGAR FOR SUFFICIENT TIME TO MELT THE ICE. THEN DRAIN THE SUMPS UNTIL THE WATER IS REMOVED.
(1)
In cold weather drain the fuel tank sumps prior to refueling to remove water from the fuel tanks if the airplane has been idle for more than 45 minutes prior to refueling. Drain the fuel tank sumps again after refueling if the airplane has been idle for 2 hours or more after refueling, prior to departure (AMM 12-33-01/301 and AMM 12-11-03/301).
(2)
Do the Cold Weather Maintenance procedure (AMM 12-33-01/301).
S 553-041
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737-300/400/500MAINTENANCE MANUAL
S 553-042
(3)
Put the airplane back to a serviceable condition after storage (AMM 10-12-00/201).
S 883-043
(4)
If the ambient temperature is -40°F (-40°C) or below within the last 12 hours, do these steps:
(a) Secure the lavatory doors in the open position.
CAUTION: THE AIR ENTERING THE CONDITIONED AIR GROUND SERVICE PORT
_______ MUST NOT EXCEED 158°F (70°C) AND THE PRESSURE MUST NOT EXCEED 15 INCHES (38 CENTIMETERS) OF WATER AT THE POINT WHERE THE AIR ENTERS THE BODY OF THE AIRPLANE.
(b) For ground equipment with multiple heating hoses (YMP-350), do these steps:
NOTE: It will take approximately 60 minutes to raise the
____ flight deck temperature from -54°F (-65°C) to -4°F (-20°C) with the YMP-350 heating unit.
1) Connect one heating hose to the 1304L service connection for ground air conditioning unit. 2) Insert two heating hoses in the Electronics Equipment Bay through the electronic equipment access door, 1201L. 3) Insert one heating hose into the forward equipment bay through the forward access door, 1103L. 4) Make sure the flight deck temperature stays at or above -4°F (-20°C) for 30 minutes.
CAUTION: THE AIR ENTERING THE CONDITIONED AIR GROUND SERVICE PORT
_______ MUST NOT EXCEED 158°F (70°C) AND THE PRESSURE MUST NOT EXCEED 15 INCHES (38 CENTIMETERS) OF WATER AT THE POINT WHERE THE AIR ENTERS THE BODY OF THE AIRPLANE.
(c) For ground equipment with a single heating hose (Herman Nelson heater), do these steps: 1) Connect one heating hose to the 1304L service connection
for ground air conditioning unit. 2) Attach the return hose to the 1201L Electronic Equipment Access Door 119AL electronic equipment access door. 3) Make sure the flight deck temperature stays at or above -4°F (-20°C) for 30 minutes.
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