NOSE GEAR MAXIMUM TOWING LOADS DESIGN LOAD LIMITS
LB KG
757-200 NLG OLEO *[1] 36,200 16420
757-300 NLG OLEO *[1] 40,600 18416
757-200 TOW FITTING *[2] 36,200 16420
757-300 TOW FITTING *[2] 40,600 18416
757-200 TOW FITTING *[3] 33,000 14970
757-300 TOW FITTING *[3] 33,000 14970
CAUTION: IF THE TOW LOAD IS MORE THAN THE DESIGN LIMITS, YOU MUST MAKE A COMPLETE INSPECTION OF THE NOSE GEAR AND ALL RELATED OR ADJACENT STRUCTURE
*[1] THE LOAD IS APPLIED EITHER FORWARD OR AFT +/-5 DEGREES FROM THE CENTERLINE. INSTALL THE STRAP IN THE CROSS-HATCHED AREA. THE TOW STRAP MUST BE A MINIMUM OF 4 INCHES(10.2CM) WIDE WHERE IT CONTACTS THE INNER CYLINDER
*[2] 0-45 DEGREES ANGLE OF TURN *[3] 45-90 DEGREES ANGLE OF TURN
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Figure 4-17 MAXIMUM TOWING LOADS, MAIN GEAR
MAIN LANDING GEAR MAXIMUM TOWING LOADS DESIGN LOAD LIMITS
LB KG
757-200 TOW FITTING *[2] 27,110 12323
757-300 TOW FITTING *[2] 30,500 13835
757-200 MLG OLEO *[1] 24,560 11140
757-300 MLG OLEO *[1] 41,000 18598
CAUTION: IF THE TOW LOAD IS MORE THAN THE DESIGN LIMITS, YOU MUST MAKE A COMPLETE INSPECTION OF THE NOSE GEAR AND ALL RELATED OR ADJACENT STRUCTURE
*[1] THE LOAD IS APPLIED EITHER FORWARD OR AFT +/-30 DEGREES FROM THE CENTERLINE. INSTALL THE STRAP IN THE CROSS-HATCHED AREA. THE TOW STRAP MUST BE A MINIMUM OF 4 INCHES(10.2CM) WIDE WHERE IT CONTACTS THE LANDING GEAR
*[2] THE LOAD IS APPLIED EITHER FORWARD OR AFT +/-30 DEGREES FROM THE CENTERLINE
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Figure 4-18 757-200 AIRPLANE GROUND STABILITY
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4-20-3 When You Tow or Winch the Airplane from the Main Gear
CAUTION: DO NOT TOW THE AIRPLANE FROM A GEAR THAT HAS DAMAGE. IF YOU MUST USE THE GEAR, YOU MUST FIRST REPAIR IT.
1.
There are tow lugs on each of the main gears. For more data see Figure 4-13 and Figure 4-14. Attach the nose gear to a vehicle with a towbar. This vehicle will move and stop (steer and brake) the airplane. For details on the nose gear fitting see Figure 4-13. See Figure 4-19 thru Figure 4-22 for different towing and winching arrangements.
2.
Use a wire rope cable between the airplane and the tow vehicle or the winch. The cable must have applicable fittings and cable diameters for the required load with sufficient safety factors. Use load indicating devices (see Figure 4-23) between the gear and the cable to prevent damage to the gear from a dangerous load. See SUBJECT 3-20-4 for data about shackles.
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