CAUTION: DO NOT HOLD OR TURN THE NOSE WHEEL STEERING TILLER WHILE TOWING
_______ THE AIRPLANE.
 (3)  Tow the airplane.
 NOTE: For airplane clearances while towing, see Fig. 207.
____
 WARNING: WHEN YOU TOW THE AIRPLANE, ALL PERSONS MUST STAY OUT OF
_______ THE DANGEROUS AREAS AROUND THE TOW VEHICLE, TOW BAR, NOSE WHEELS, AND THE 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 MINIMUN DISTANCE, A FATAL INJURY CAN OCCUR.
 (a)  
Make sure the persons that work near the areas that follow, know the pushback hazard zones as shown in Figure 207A:

 -
tow vehicle

 -
tow bar

 -nose wheels
 -main wheels.

 (b)  
Before you park the airplane, complete towing with a 12-foot straight path.

 NOTE: This will release torsional stress applied to the
____
 landing gear components and tires during a turn.
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747-400
MAINTENANCE MANUAL

 CAUTION: IF YOU HAVE DISCONNECTED THE TORSION LINKS, MAKE SURE THE
_______ TORSION LINKS DO NOT DROP. DAMAGE TO THE SQUAT SWITCH MOUNTING BRACKET CAN OCCUR.
 (c)  If the torsion links were disconnected, align the links during the last few feet of the tow so that the torsion link bolt can be installed.
 NOTE: To make the final adjustment of the torsion links,
____ move the tow bar sideways (if installed).
 S 862-013
 (4)
Close the 6L18 PARK BRAKE circuit breaker on the P6 panel.

 S 862-020

 (5)  
Set the parking brake.

 NOTE: If the Brake Temp display shows on EICAS, release the parking
____ brake after the wheel chocks are in location.
 S 782-021
 (6)
Make sure the HYD BRAKE PRESS gage shows approximately 3000 psi.

 S 842-023

 (7)  
Put the airplane to it's usual condition (see par. 12).

 TASK 09-11-00-582-024
 4. Tow the Airplane (With Engines Removed)
________________
 A. Procedure
 S 842-025
 (1)  Prepare to tow the airplane (see par. 2).
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 S 842-080
 CAUTION: AT ALL TIMES, KEEP THE CENTER OF GRAVITY IN THE LIMITS SHOWN
_______ (FIG. 202). UNUSUAL CONDITIONS, SUCH AS PERSONNEL GATHERED IN THE AFT FUSELAGE, FUEL IN THE OUTBOARD WING TANKS, REMOVAL OF MAJOR RADIO AND ELECTRONIC EQUIPMENT COMPONENTS FROM THE FORWARD BODY, ETC., CAN CAUSE A CHANGE IN THE AFT CENTER OF GRAVITY. IF THE CENTER OF GRAVITY MOVES TOO FAR AFT, THE AIRPLANE COULD FALL ON IT'S TAIL.
 (2) Measure the center of gravity.
 NOTE: Usually, no ballast is required when towing the airplane with
____ any combination of engines removed. The plane must be fully equipped (except crew, payload, and fuel), and all landing gear must be supporting the airplane.
 To keep the aft towing tipping limit (Fig. 202) you can add ballast. Keep a minimum load on the nose gear of 15,000 pounds (235 psi nose gear strut pressure).
 S 582-081
 WARNING: IF YOU LOSE HYDRAULIC POWER ON THE AIRPLANE WHILE YOU ARE
_______ TOWING THE AIRPLANE, YOU MUST TELL THE TOW VEHICLE OPERATOR. YOU MUST DECREASE THE TOW SPEED OR STOP TOWING, IF IT IS NECESSARY. IF YOU HAVE A DECREASE IN HYDRAULIC POWER, ONLY ACCUMULATOR PRESSURE WILL BE AVAILABLE FOR BRAKE OPERATION.
 IF YOU HAVE A DECREASE IN HYDRAULIC POWER WHILE TOWING, DO NOT APPLY THE BRAKES EXCEPT IN AN EMERGENCY OR UNTIL THE AIRPLANE IS PARKED. SMALL PRESSURE ON THE PEDAL ENDS WILL CAUSE A LOSS OF HYDRAULIC BRAKE PRESSURE. A DECREASE IN HYDRAULIC PRESSURE WILL LIMIT THE ABILITY OF THE BRAKE SYSTEM TO STOP THE AIRPLANE.
　
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