C.
Procedure
S 024-003
(1)
Disconnect and install caps on the hydraulic lines that attach to the fuse.
S 024-007
(2)
Remove the fuse from the airplane.
NOTE: Put a plug on the ports.
____
TASK 32-33-71-404-004
2. Nose Gear Retract Fuse Installation (Fig. 401)______________________________________________
A. Consumable Material
(1)
Hydraulic Fluid - BMS 3-11 (Ref 20-30-21)
B.
Procedure
S 844-005
(1)
Remove the plugs from the hydraulic fuse.
(a)
Remove the caps from the hydraulic lines.
(b)
Position the fuse in the hydraulic line and finger tighten the swivel nut and the union nut.
(c)
Rotate the fuse so the name plate is facing out.
(2)
Tighten the fittings onto the fuse.
S 404-004
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A 737-300/400/500MAINTENANCE MANUAL
WARNING:_______ MAKE SURE THAT YOU INSTALL THE GROUND LOCK ASSEMBLIES IN
THE MAIN LANDING GEAR TO PREVENT THE ACCIDENTAL OPERATION
OF THE MAIN LANDING GEAR. IT CAN CAUSE INJURY TO PERSONS
AND DAMAGE TO EQUIPMENT IF THE GEAR RETRACTS.
(a)
Lift the airplane for the nose gear retraction (Ref. Chapter 7, Airplane Lifting).
(b)
Pressurize the hydraulic system A (Ref 29-15-00, MP).
(c)
Remove the ground lock assembly (Ref 32-00-01).
WARNING: REMOVE ALL EQUIPMENT AND PERSONS FROM THE WHEEL WELL AREAS
_______ BEFORE YOU OPERATE THE GEAR. IT CAN PREVENT INJURY TO PERSONS AND DAMAGE TO EQUIPMENT.
(d)
Operate the gear retraction several times to bleed the air from the fuse and the lines.
(e)
Do a check on the fuse connections for leakage.
(f)
Extend the gear and install the ground lock assembly (Ref 32-00-01).
(g)
Decrease the pressure from the hydraulic system A (Ref. 29-15-00, MP).
(h)
Lower the airplane.
NOTE: Remove the jacks.
____
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
A
Nose Gear Retract Pressure Fuse Installation
Figure 401
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C97010
A
737-300/400/500MAINTENANCE MANUAL
MAIN GEAR MANUAL EXTENSION SYSTEM - DESCRIPTION AND OPERATION
_____________________________________________________________
1. General_______
A. The main gear manual extension system is used to lower the main gear when hydraulic system pressure is not available. Pulling a manual extension handle for the respective gear transmits motion through drums and cables to unlock the gear from the up and locked position. When the main gear uplock mechanism is released, the gear will free fall to the down and locked position.
B. Controls for main gear manual extension are located in the floor of the control cabin immediately aft and to the right of the aisle stand (Fig. 1). Three controls, one for the nose gear and one for each main gear, are installed in the control cabin floor protected by an access door. The landing gear control handle must be either in neutral or down position to prevent hydraulic lock during manual extension. A single pull of approximately 60 pounds on the manual extension handle releases the main gear uplock mechanism to allow the gear to extend. A spring attached to the manual extension linkage returns the system to the original position. The landing gear position and warning lights function normally during manual extension operation.
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