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A
757 MAINTENANCE MANUAL
200
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106
TAXI GROSS WEIGHT (1000 LBS) 757-200
_____1. TIRE PRESSURES MUST BE BETWEEN THE MINIMUM AND MAXIMUM LIMITS SHOWN IN THE CHART THAT
NOTES: CORRESPOND TO THE EXPECTED MAXIMUM TAXI WEIGHT AND THE TIRES IN USE. FOR EXAMPLE, THE 24 AND 26 PR MAIN GEAR TIRES ON A 230,000 POUND GROSS WEIGHT AIRPLANE CAN BE INFLATED FROM 164 PSI (MINIMUM) TO 188 PSI (MAXIMUM). THE LIMITS INCLUDE GAGE TOLERANCES.
2.
ALL MAIN GEAR TIRES SHOULD BE INFLATED TO THE SAME PRESSURE |5 PSI.
3.
INFLATION PRESSURES ARE FOR LOADED TIRES (AIRPLANE WEIGHT ON THE TIRES). FOR UNLOADED TIRES, REDUCE PRESSURE BY 4%.
4.
24 PR MAIN GEAR TIRES ARE NECESSARY FOR AIRPLANES WITH MAX TAXI GROSS WEIGHTS THAT ARE MORE THAN 241,000 POUNDS (PR = PLY RATING)
(A) MAXIMUM PRESSURE, INCLUDING TOLERANCE.
Landing Gear Tire Inflation Pressure Limits
Figure 301
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757
MAINTENANCE MANUAL
90 100 110 120 130 140 150 160 170 180 190
TIRE INFLATION PRESSURE (PSI)
Air Refill Pressure
Figure 302
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
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757
MAINTENANCE MANUAL
ú
ú S 843-034
ú
ú
CAUTION: INCREASE THE TIRE PRESSURES WHEN YOU OPERATE THE AIRPLANE AT A_______
ú HIGHER GROSS WEIGHT AGAIN (SEE FIG. 301). THE TIRES WILL BE
ú DAMAGED IF YOU OPERATE THEM AT PRESSURES LESS THAN THE VALUES
ú SHOWN IN THE CHART.
ú
ú (6) When you operate the airplane at less than the maximum weight, you
ú can decrease the tire pressure. You can decrease it to the value
ú for the lower maximum weight (Fig. 301). An example of this type of
ú operation is when you use the airplane for pilot training.
ú
ú S 843-035
ú (7) You must do a check of tire pressures each day with an accurate
ú gage. You must do the checks when the tires are cool. You must not
ú do a check of tire pressure for a minimum of 2 hours after a flight.
ú You must not bleed gas from a hot tire to adjust the tire pressure
ú to the correct value.
F. Procedure
S 613-002
(1) Do a check of the tire pressure.
(a) Do not do a check of the tire pressure for a minimum of 2 hours
after a flight.
NOTE: Two hours are necessary after a flight for a tire____
to become sufficiently cool to do maintenance on it.
(b) Do a check of the tire pressure with an accurate gage.
(c) Compare the tire pressure indication on the gage with the
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