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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
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MAINTENANCE MANUAL
3) Engage heading select mode. a) Select 30 degree heading change to the left of the
airplane heading and wait for wheel motion to stop. b) Select 30 degree heading change to the right of the airplane heading and wait for wheel motion to stop.
4) Repeat steps 1 thru 3 for the other two autopilot channels.
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(10) At temperatures below -22°F (-30°C) pump the brake pedal (8) times shortly before starting the engines. At each wheel, verify extension/retraction of brake pistons.
(a) If brake operation is not normal, do these steps: 1) Provide local warming to the brake. 2) Repeat the test until proper operation is observed. 3) If the difficulty persists, replace the brake
(AMM 32-41-10/401).
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(11)
Inspect the wheel wells for ice/snow/slush on the Alternate Landing Gear System Components. Clear as necessary.
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(12)
Fill the IDG with oil as required (AMM 12-13-03/301).
NOTE: If the IDG is serviced for cold weather operation, use the
____ preferred oil, MIL-L-7808 lubricant instead of MIL-L-23699 lubricant. The only MIL-L-7808 lubricant approved for Sundstrand IDGs is Exxon 2389.
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(13)
Visually check the wing lower surface for fuel leaks.
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(14)
Visually check the landing gear.
(a) Wipe the inner cylinder with a clean cloth to check for hydraulic leakage from the seals.
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(15)
Check the tire pressure and inflate the tires as required (AMM 12-15-03/301).
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(16)
Check the main gear shock strut and service as required (AMM 12-15-01/301).
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(17)
Check the nose gear shock strut, and service as required (AMM 12-15-02/301).
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ALL ú ú 01 Page 320 ú May 28/01
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A
757
MAINTENANCE MANUAL
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(18) When you refuel the airplane, use these requirements:
(a) Make sure the fuel temperature is at least 6°F (3°C) above the fuel freeze point or -45.4°F (-43°C), whichever is higher. Use the ASTM method to determine the freeze point.
NOTE: The Fuel Quantity Indicator on the wing fuel station can
____ indicate slowly or not show numbers in extreme cold conditions. Use an external fuel flow meter to show the amount of fuel added to the airplane.
1) Use fuels that meet specification ASTM D1655; or
2) Use fuels that meet specification GOST 10227: a) RT (PT, Russian spelling) b) TS-1 (TC-1, Russian spelling)
(b) Approved fuel additives are:
NOTE: Adding an anti-icing fuel additive may help in the
____
sumping of the fuel tanks.
1) Fuel Additive, specification GOST 8313, Fluid I (also known as Fluid E) a) Fluid I may be used at a mixture of no more than 0.15
percent by volume. 2) Fuel Additive, specification TU-6-10-1458, Fluid I-M (also known as Fluid E- Methanol).
a) Fluid I-M may be used at a mixture of no more than 0.15 percent each, by volume. 3) Fuel Additive, specification GOST 17477, Fluid TGF.
a) Fluid TGF may be used at a mixture of no more than 0.15 percent by volume. 4) Fuel Additive, specification TU-6-10-1457, Fluid TGF-M (also known as Fluid TGF- Methanol).
a) Fluid TGF-M may be used at a mixture of no more than
0.15 percent each, by volume.
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(19)
Start the engines (AMM 71-00-00/201).
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(20)
Observe the flight crew and portable oxygen systems.
(a) It may be noted that the pressure in the flight crew and portable oxygen systems may indicate lower than normal at cold temperatures (AMM 12-15-08/301).
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