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A
737-300/400/500MAINTENANCE MANUAL
 B. Procedure - Nose Gear Steering Lockout Pin Installation
 S 422-005
 (1)  
Install the nose gear steering lockout pin:

 (a)  
Push the knob on the nose gear steering depressurization valve and hold it in the depressed position.

 (b)  
Push the button on the lockout pin and fully insert the pin in the hole in the side of then depressurization valve.

 (c)  
Release the button to lock the pin in the hole.

 (d)  
Release the knob on the nose gear steering depressurization valve.

 C.
Procedure - Nose Gear Steering Lockout Pin Removal

 S 022-006
 (1)  Remove the nose gear steering lockout pin:
 WARNING: MAKE SURE ALL PERSONS AND EQUIPMENT ARE AWAY FROM THE NOSE
_______ GEAR UNTIL THE NOSE GEAR IS CENTERED. IF THE HYDRAULIC SYSTEM IS PRESSURIZED WHEN THE LOCKOUT PIN IS NOT INSTALLED AND THE GEAR IS NOT CENTERED, MOVEMENT OF THE NOSE GEAR CAN CAUSE INJURY TO PERSONS AND DAMAGE TO THE EQUIPMENT.
 (a)  
Make sure the nose gear is centered before you remove the lockout pin.

 (b)  
Push the knob on the nose gear steering depressurization valve and hold it in the depressed position.

 (c)  
Push the button on the lockout pin and remove the lockout pin.

 (d)  
Release the knob on the nose gear steering depressurization valve.

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A 737-300/400/500MAINTENANCE MANUAL
SEE A
SEE  A 
MAIN GEAR  NOSE GEAR 
SAFTY PIN  F72735  A 

Ground Lock Assembly
Figure 201

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A

737-300/400/500
MAINTENANCE MANUAL

SEEA B
FWD
NOSE GEAR STEERING DEPRESSURIZATION VALVE
KNOB 
LOCKPIN 
HOLE 
RELEASE 
BUTTON  F72735-13 
A 

B
Nose Gear Steering Lockout Pin Installation Figure 202
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737-300/400/500MAINTENANCE MANUAL
 LANDING GEAR SHOCK STRUT INNER CYLINDER - INSPECTION FOR CHROME PLATE CORROSION
_______________________________________________________________________________
 1.  General
_______
 A.  This procedure has two parts. The first is an inspection of the shock strut inner cylinder for chrome cracking or chipping. The second part is to repair cracked chrome on the inner cylinder. There is no standard repair for chipped off chrome. Chrome cracking is a different condition then chrome chipping. If the chrome has chipped, bubbled, lifted, or if the base metal has been exposed there is no standard repair.
 B.  Chrome plateing on large diameter parts will show very small and narrow lines that look like cracks. These lines (microcracks or chicken-wire cracks) naturally occur when the chrome plate was initially applied on the base metal. When you look at these parts in dim light or with a light source angled to the surface for the inspection, you will see these lines.
 TASK 32-00-03-206-001
 2.  Inspection for Cracking and Chipping on the Shock Strut Inner Cylinder Chrome
_____________________________________________________________________________
 A.  Equipment
 (1)  
　
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