S 614-028

 (5)  
Add the hydraulic fluid to the resevoir if it is necessary (Ref. Chapter 12, Hydraulic Servicing).

 S 784-027
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
 NOSE GEAR LOCK ACTUATOR - REMOVAL/INSTALLATION
______________________________________________
 TASK 32-33-21-004-005
 1.  Nose Gear Lock Actuator Removal (Fig. 401)_______________________________
 A. Equipment
 (1)  
Ground Lock Assemblies (AMM 32-00-01/201)

 B.
Prepare for the removal

 S 864-001
 (1)  
Make sure you install the ground lock assemblies for the landing gear (AMM 32-00-01/201).

 S 864-002

 (2)  
Decrease the pressure on the hydraulic system A (AMM 29-15-00/201).

 C.
Procedure

 S 034-003
 (1) Disconnect the hydraulic lines (7) from the lock actuator (6).
 NOTE: Put a plug on the hydraulic lines.
____
 (a)  
On airplanes with the bracket (13), remove the bracket (13).

 (b)  
Disconnect the bottom end of the actuator (6) from the bracket

 (3)
 on the bulkhead.

 (c)  
Remove the upper attachment bolt (11).

 (d)  
Remove the lock actuator (6) from the airplane.

 (e)  
Remove the hydraulic fittings from the actuator.

 (f)  
Discard the O-ring packings.

 NOTE: Put a plug on the ports.
____
 TASK 32-33-21-404-004
 2.  Nose Gear Lock Actuator Installation (Fig. 401)____________________________________
 A. Consumable Materials
 (1)  D00013 Grease - MIL-PRF-23827
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A 737-300/400/500MAINTENANCE MANUAL
SEE A
WASHER (TYPICAL)
11. UPPER ATTACHMENT
10. RETAINERBOLT
 BOLT
1. LOCK SPRING
9. LOCK BRACE
2. SHAFT
7. HYDRAULIC
 LINE

3. BRACKET 8. NYLON WASHERS
1. LOCK SPRING
7. HYDRAULIC
 LINE

BRACKET ATTACH
FLANGE

4. LOWER  ATTACHMENT BOLT6. LOCK ACTUATOR FWD
5. NYLON
WASHERS
13. BRACKET 1 SPACER
A
1 NOT ON ALL AIRPLANES
Nose Gear Lock Actuator Installation
Figure 401

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A
737-300/400/500MAINTENANCE MANUAL
 (2)  
D00633 Grease - BMS 3-33

 (3)  
G00000 Compound - Corrosion Inhibiting, BMS 3-27, Mastinox 6856K

 B.
Prepare for the installation

 S 424-006
 (1)  
Remove the plugs.

 (a)  
Install the hydraulic fittings in the actuator with new O-ring packings.

 (b)  
Extend the actuator rod 1-3/16 inches from the full retraction.

 (c)  
Fill the actuator with hydraulic fluid.

 (d)  
Put a cap on the ports.

 C.
Procedure

 S 644-009
 WARNING: USE NITRILE GLOVES FOR SKIN PROTECTION AGAINST BMS 3-27
_______ (MASTINOX 6856K). IF MASTINOX GETS ON YOUR SKIN, IMMEDIATELY REMOVE IT WITH WATER. IF THIS MATERIAL GETS IN YOUR EYES, IMMEDIATELY FLUSH YOUR EYES WITH WATER AND GET MEDICAL AID. THIS MATERIAL CONTAINS VERY POISONOUS AND FLAMMABLE AGENTS WHICH CAN CAUSE INJURY TO PERSONS.
 CAUTION: REMOVE UNWANTED MASTINOX FROM SURFACES WHERE YOU LUBRICATE WITH
　
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