S 212-020

 (2)  
Examine the pitot tube for damage.

 NOTE: The pitot tube does not need to be removed for mormal
____ erosion/corrosion of the pitot tip.
 (a)  
If the pitot tube is bent or the electrical heater is damaged, install a new pitot tube (AMM 27-31-94/401).

 (b)  
Make sure the maximuim tip bluntness of the pitot tube is not more than 0.04 inch.

 (3)  
Put the Airplane Back to Its usual Condition

 S 862-021
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
 ELEVATOR HINGES - ADJUSTMENT/TEST
_________________________________
 1.  General_______
 A.  This procedure has one task. The task is a system test of the elevator hinges.
 TASK 27-31-21-715-001
 2.  Elevator Hinges Test____________________
 A.  Special Tools and Equipment
 (1)  
F80055-1 - Trammel Bar

 B.  
Standard Tools and Equipment

 (1)  
Spring scale - compression type, 0-15 pound capacity, graduated in one pound increments

 (2)  
Loading block (17 inches long, 2 x 4 wood block)

 (3)  
Scale - 0-6 inches

 C.  
References

 (1)  
27-31-00/201, Elevator and Tab Control System

 D.  
Access

 (1)  
Location Zone
 101 Control Cabin, LH
 102 Control Cabin, RH
 704 Tail Cone
 711 Elevator and Tab, LH
 712 Elevator and Tab, RH

 (2)  
Access Panels
 3801 Tail Cone Access Door, LH
 3802 Tail Cone Access Door, RH
 9107 Access Panel Trailing Edge, LH
 9207 Access Panel Trailing Edge, RH
 9108 Access Panel Trailing Edge, LH
 9208 Access Panel Trailing Edge, RH
 9109 Access Panel Trailing Edge, LH
 9209 Access Panel Trailing Edge, RH

 E.  
Procedure

 S 865-003
 (1)  
Remove the elevator systems A and B hydraulic power (Ref 27-31-00/201).

 S 865-002

 (2)  
Use the trammel bar to set the B dimension at 41.57 |0.01 inches (Fig. 501).

 S 865-004

 (3)  
Move the control columns fully forward and attach DO-NOT-MOVE tags.

 (a)  
Make sure the control columns are held in this position

 S 035-005
 (4)  Remove the bolts that attach the aft end of each elevator control pushrod to its elevator (Fig. 502).
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
 (5)  S 865-006Remove the DO-NOT-MOVE tags and move the control columns fully aft to the stops: (a) Remove the clevis of the elevator control pushrod from the elevator. (b) Make sure the control columns are held in this position and attach DO-NOT-MOVE tags.
 (6)  S 225-007Measure the breakaway forces (Fig. 502): (a) Hold a loading block against the elevator rear spar adjacent to the elevator inboard rib. 

____NOTE: THE STABILIZER TRIM JACKSCREW IS SHOWN WITH THE STABILIZER LEADING EDGE AT ZERO DEGREES. 
1  THE "B" DIMENSION IS MEASURED BETWEEN THE CENTER OF THE UPPER AND LOWER GIMBAL PINS  "B" DIM  1  TRAMMEL BAR 

FWD
Stabilizer Trim Jackscrew Setting
Figure 501

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