S 084-023

 (7)  
Remove the stabilizer trim lock assembly.

 S 714-024

 (8)  
Move the control wheel to make sure the stabilizer operates smoothly through the full travel between the jackscrew stops.

 S 224-025

 (9)  
Make sure the clearance between the jackscrew support fitting and the fuselage structure is 0.01-0.05 inch on the two sides of the stabilizer.

 F.
Put the Airplane to Its Usual Condition

 S 414-018
 (1)  
Replace the end side door and the access panel 9105 or 9205.

 S 414-017

 (2)  
Close the access door 3701.

 S 414-016

 (3)  
Replace the lower rear spar and the gap covers of the trailing edge.

 S 864-015

 (4)  
Install the electrical connectors on the electrical actuator and the autopilot actuator.

 (5)  
Set the horizontal stabilizer trim cutout switches to NORMAL.

 S 864-014
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
 S 864-013
 (6)  
Remove the DO-NOT-CLOSE tags and close these circuit breakers:

 (a)  
P6-2 Circuit Breaker Panel
 1) STABILIZER TRIM ACTUATOR

 (b)  
P18-0 Circuit Breaker Panel
 1) AUTOPILOT STABILIZER TRIM SERVO

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
 HORIZONTAL STABILIZER CENTER SECTION HINGE BEARING - INSPECTION/CHECK
_____________________________________________________________________
 1.  General
_______
 A.  This procedure has one task. The task is an inspection of the horizontal stabilizer center section hinge bearing.
 B.  The task is to calculate the play of the horizontal stabilizer. The play of the horizontal stabilizer is the total of the play of the jackscrew and the hinge mechanisms.
 TASK 27-41-31-206-001
 2.  Horizontal Stabilizer Center Section Hinge Bearing Wear Limits (Fig. 601)
______________________________________________________________
 A.  Standard Tools and Equipment
 (1)  
Two weights of 220 |25 pounds each (You can use the weights of two persons. Measure and write the weight of each person and the total weight. The difference between the two persons weight should be not more than 10 pounds. Alternatively, you can use two weights, such as bars and shot).

 (2)  
Dial Indicator - Accurate to 0.001 inch

 (3)  
Mounting device to hold the dial indicator against the bulkhead structure (for example a suction cup).

 B.  
Access

 (1)  
Location Zone
 701 Tail Compartment
 709 Horizontal Stabilizer, LH
 710 Horizontal Stabilizer, RH

 (2)  
Access Panels
 3701 Stabilizer Trim Access Door
 9105 Access Panel Trailing Edge, LH
 9205 Access Panel Trailing Edge, RH

 C.  
References

 (1)  
27-41-31/401, Horizontal Stabilizer Center Section Hinge Bearing

 (2)  
27-41-81/401, Stabilizer Ball Nut and Jackscrew Gearbox

 D.  
Procedure:

 S 226-003
 (1)  
Measure the play of the hinge joint of the stabilizer center section (which is referred to as X for the left joint and Y for the right joint):

 (a)  
Set the stabilizer at the 3 units of trim (neutral position).

 (b)  
Attach the dial indicator to the left side of the fuselage at body station 1154. 1) Make sure that the plunger pushes against the stabilizer

 lower surface at a minimum of 1/8 inch.