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Page 501
Oct 10/2003
D633A101-GUN
BOEING PROPRIETARY - Copyright#Unpublished Work - See title page for details
C. Tools/Equipment
NOTE: When more than one tool part number is listed under the same "Reference" number, the
tools shown are alternates to each other within the same airplane series. Tool part numbers
that are replaced or non-procurable are preceded by "Opt:", which stands for Optional.
Reference Description
COM-1554 Tensiometer - Cable (40-600 LB)
(Part #: ACM-600, Supplier: 13331, A/P Effectivity: 737-ALL)
(Part #: T60 1001-C9-1A, Supplier: 0N8U4, A/P Effectivity: 737-ALL)
SPL-1677 Assembly - Trammel Bar, Stabilizer Trim Actuator
(Part #: F80055-1, Supplier: 81205, A/P Effectivity: 737-100, -200,
-200C, -300, -400, -500, -600, -700, -700C, -700ER, -700QC, -800, -900,
-900ER, -BBJ)
D. Location Zones
Zone Area
112 Area Forward of Nose Landing Gear Wheel Well
311 Area Aft of Pressure Bulkhead - Left
312 Area Aft of Pressure Bulkhead - Right
E. Access Panels
Number Name/Location
112A Forward Access Door
311BL Stabilizer Trim Access Door
F. Prepare for the Adjustment
SUBTASK 27-41-00-010-001
(1) Open these access panels:
Number Name/Location
112A Forward Access Door
311BL Stabilizer Trim Access Door
SUBTASK 27-41-00-020-001
WARNING: DO NOT OPERATE THE STABILIZER ELECTRICALLY UNTIL YOU ADJUST THE
STABILIZER TRIM LIMIT SWITCHES, CABLES, AND CHAIN. THE HORIZONTAL
STABILIZER CAN MOVE QUICKLY WHEN YOU OPERATE THE STABILIZER TRIM LIMIT
SWITCHES. THIS CAN CAUSE INJURIES TO PERSONS AND DAMAGE TO EQUIPMENT.
(2) Disconnect the flexible shaft [8] from the stabilizer forward control mechanism (Figure 501).
SUBTASK 27-41-00-020-002
(3) Remove the pins [14] from the connector link [13] to disconnect the chain [10].
SUBTASK 27-41-00-020-003
(4) Remove the nut [6], washer [5], washer [4], bolt [3] to disconnect the upper turnbuckle [2] from
the stabilizer forward mechanism.
SUBTASK 27-41-00-820-001
(5) Adjust the lower turnbuckle [9] on the stabilizer forward mechanism to its maximum length
0.50 in. (12.7 mm) minimum thread engagement on each rod end).
NOTE: This will move the forward drum aft.
737-600/700/800/900
AIRCRAFT MAINTENANCE MANUAL
EFFECTIVITY
GUN ALL 27-41-00
Page 502
Oct 10/2006
D633A101-GUN
BOEING PROPRIETARY - Copyright#Unpublished Work - See title page for details
G. Procedure
CAUTION: MAKE SURE THAT THE STABILIZER TRIM MOTOR HAS A MINIMUM 13 MINUTES OFF
FOR EACH 2 MINUTES OPERATION. IF YOU DO NOT GIVE SUFFICIENT TIME OFF TO
THE STABILIZER TRIM MOTOR, DAMAGE TO THE MOTOR CAN OCCUR.
SUBTASK 27-41-00-710-001
(1) Adjust the tension of the cable STA and cable STB:
(a) If you installed new cables, then do these steps to stretch the cables:
NOTE: If you are adjusting the tension on existing cables (cables that were already on
the aircraft), you do not need to do these steps. Go to the steps to adjust the cable
STA and cable STB to their correct rigging tension.
1) Adjust the lower turnbuckle [9] to get the cable tension of 350 ±50 lbf (1557 ±223 N).
a) Operate the stabilizer system through a full cycle.
NOTE: You will need to use the control wheel switches to move the stabilizer
since the stab trim control wheel chain has been disconnected.
b) Put the cables at the center of the forward cable drum.
c) Tighten the lower turnbuckle [9].
d) Use the 40 - 600 lb cable tensiometer, COM-1554 or 40 - 600 lb cable tensiometer,
COM-1554 to make sure the cable tension is at 350 ±50 lbf (1557 ±223 N).
e) Operate the stabilizer system through a full cycle.
f) Put the cables at the center of the forward cable drum.
g) Make sure the cable tension stays at 350 ±50 lbf (1557 ±223 N).
h) Operate the stabilizer system through 5 full cycles.
i) Make sure the cable tension stays at 350 ±50 lbf (1557 ±223 N).
(b) Do these steps to adjust cable STA and cable STB to the correct rigging tension:
1) Operate the stabilizer system through a full cycle.
NOTE: You will need to use the control wheel switches to move the stabilizer since
the stab trim control wheel chain has been disconnected.
2) Put the cables at the center of the forward cable drum.
3) Adjust the lower turnbuckle [9] to get the cable rigging tension as shown in the table
below (Table 501):
Table 501/27-41-00-993-807
Temp
Deg F (C)
Low Tolerance
Lbs (newtons)
High Tolerance
Lbs (newtons)
110 (43.3) 137 (609) 187 (832)
109 (42.8) 136 (605) 186 (827)
108 (42.2) 136 (605) 186 (827)
　
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