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MAINTENANCE MANUAL
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(6) Fill the IDG with oil as requried (AMM 12-13-03/301).
NOTE: If the IDG is serviced for cold weather operation, use the
____ preferred oil, MIL-L-7808 instead of MIL-L-23699 lubricant. The only MIL-L-7808 lubricant approved for Sundstrand IDGs is Exxon 2389.
S 213-096
(7)
Visually check the wing lower surface for fuel leaks.
S 213-097
(8)
Visually check the landing gear.
(a) Wipe the inner cylinder with a clean cloth to check for hydraulic leakage from the seals.
S 683-099
(9)
Fully drain the potable water system (AMM 12-14-01/301).
S 683-100
(10)
Make sure all galley inserts, coffee pots, water heaters, filters, and boilers are empty and supply lines are drained using the manufacturer's instructions.
S 683-101
WARNING: THE GLYCOL (ANTIFREEZE) MUST NOT CONTAIN ANY FORM OF "STOP
_______ LEAK" CHEMICAL AS THIS CAN CAUSE DAMAGE TO THE SYSTEM COMPONENTS.
(11) If you do not drain the waste system, add glycol.
NOTE: Use the fluid manufacturer's recommendations for mixture
____
ratios (AMM 12-17-01/301).
(a) If the glycol-water mixture does not provide adequate protection, fully drain the waste system (AMM 12-17-01/301).
S 623-102
(12) Do the preservation for the electrical/electronic systems.
NOTE: Do not remove the batteries from the emergency radio beacons
____
in the slide/raft covers and life rafts.
(a) Remove the emergency light batteries, do this task: Power Supply - Battery Pack Replacement (AMM 33-51-07/201).
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12-33-02
ALL ú ú 01 Page 310 ú May 28/01
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757
MAINTENANCE MANUAL
(b)
Remove the batteries from the power supply module for the emergency lights, do this task: Power Supply - Battery Pack Replacement (AMM 33-51-07/201).
(c)
Remove the megaphone battery.
(d)
Apply electrical power to all of the electrical/electronic equipment remaining in the airplane for a minimum of 2 hours (AMM 24-22-00/201). 1) Look at the EICAS to make sure the main battery and the APU
battery are fully charged (AMM 24-31-00/201).
(e)
Put all batteries in a warm location where the temperature stays above 50°F (10°C).
S 553-104
(13) Prepare the airplane for storage:
(a)
Close the outflow valve.
(b)
Open the battery bus circuit breaker.
(c)
Remove the main batteries and APU batteries and put them in a warm location where the temperature stays above 50°F (10°C) (AMM 24-31-01/401 and 24-31-03/401).
(d)
Close all the main cabin doors, galley service doors, cargo compartment doors, access doors, and flight compartment windows.
NOTE: This will prevent snow from getting into the airplane
____
interior.
S 023-148
(14) If you need to tow the airplane, install the main battery and APU battery (AMM 24-31-01/401 and AMM 24-31-03/401).
WARNING: BOEING DOES NOT RECOMMEND TOWING THE AIRPLANE WHEN
_______ ELECTRICAL POWER IS NOT AVAILABLE TO OPERATE THE BRAKE HYDRAULIC SYSTEM. IF TOWING WITHOUT POWER IS REQUIRED, TELL THE TOW VEHICLE DRIVER. TOW SPEEDS MUST BE DECREASED TO WALKING SPEED (OR A SPEED WHICH WILL ALLOW THE TOW VEHICLE TO STOP THE AIRPLANE IN A SHORT DISTANCE) OR YOU MUST NOT TOW THE AIRPLANE. WITHOUT ELECTRICAL POWER, THERE IS ONLY ACCUMULATOR PRESSURE AVAILABLE TO OPERATE THE BRAKES THREE (3) TIMES. IF YOU DO NOT OBEY THIS WARNING, IT CAN CAUSE INJURY TO PERSONS OR DAMAGE TO THE AIRPLANE.
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