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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
S 582-022
(2)
Make sure that the cockpit man, the ground crew, and the tow tractor operator are in intercom communication.
S 862-014
(3)
Make sure that the wheel chocks are removed.
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(4)
Make sure that the hydraulic brakes are released.
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CAUTION:_______MOVE THE AIRPLANE FORWARD BEFORE YOU START SHARP TURNS. AVOID SUDDEN STARTS AND STOPS.
IF YOU TOW THE PLANE UNDER HIGH LOAD CONDITIONS, SUCH AS TOWING WITH BOTH TIRES FLAT ON ONE MAIN GEAR, TOWING ON SOFT TERRAIN, TOWING UP INCLINES GREATER THAN 5 DEGREES, OR OTHER ABNORMAL LOADS, REFER TO THE TOW AIRPLANE UNDER ABNORMAL LOADS TASK, AS THE NOSE GEAR TOWING LIMITATIONS MAY BE EXCEEDED.
(5) Tow the airplane.
WARNING: WHEN YOU TOW THE AIRPLANE, ALL PERSONS MUST STAY OUT OF
_______ THE DANGEROUS AREAS AROUND THE TOW VEHICLE, TOW BAR, NOSE WHEELS, AND MAIN WHEELS. PERSONS ON THE GROUND MUST KNOW IT IS POSSIBLE TO BE RUN OVER BY THE NOSE WHEELS, MAIN WHEELS, AND THE TOW VEHICLE. THIS IS BECAUSE THE AIRPLANE WILL CHANGE POSITION DURING PUSHBACK AND TOWING. MAKE SURE YOU KEEP A MINIMUM OF 10 FEET SEPARATION BETWEEN PERSONS ON THE GROUND AND THE EQUIPMENT THAT MOVES. IF YOU DO NOT KEEP THE MINIMUM DISTANCE, A FATAL INJURY COULD OCCUR.
(a)
Make sure the persons that work near the areas that follow know the pushback hazard zones as shown in Figure 207:
-tow vehicle
-toebar
-nose wheels
-main wheels.
(b)
To tow the airplane with the entry or lower cargo doors open is optional.
(c)
Tow the airplane slowly straight ahead before you try to turn.
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
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737-300/400/500MAINTENANCE MANUAL
S 582-040
CAUTION:_______ IF YOU USE A TOW BAR, YOU CAN CAUSE THE SHEAR PINS TO SHEAR IF
YOU USE THE AIRPLANE BRAKES WHILE YOU TOW THE AIRPLANE.
MOST TOWBARLESS TOW VEHICLES DO NOT HAVE A SHEAR PIN TO LIMIT
THE LOADS IF AIRPLANE BRAKES ARE USED DURING TOWING. IF
AIRPLANE BRAKES ARE USED WHILE TOWING WITH A TOWBARLESS TOW
VEHICLE ATTACHED TO THE NOSE LANDING GEAR, PERFORM THE
"EXCEEDING MAXIMUM NOSE LANDING GEAR TOWING ANGLE OR MAXIMUM
TOWING LOAD" INSPECTION FOR THE NOSE LANDING GEAR AREAS
(AMM 05-51-29).
(6) Keep brake applications to minimum use within safety limitations.
NOTE: Fully charged accumulators are capable of approximately six
____ brake applications.
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(7) Maximum normal turning angle is 78 degrees as indicated by red stripes on nose gear doors.
NOTE:____See Fig. 202 for turning dimensions. See Fig. 203 for the wingtip turning radius for various turning angles. See Fig. 204 for ground turning techniques.
(a)
The theoretical (no slip angle) airplanes turning radii VS nose gear steering angle is shown in Fig. 204.
(b)
If the maximum turning angle is exceeded and oversteer occurs: 1) Do this task: Nose Landing Gear Inspection (AMM 32-21-00/601). 2) Do this task: Nose Landing Gear Torsional Freeplay
Inspection (AMM 32-21-00/601). 3) Do this task: Phase I Inspection (AMM 05-51-51/201).
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