757
MAINTENANCE MANUAL

RETAINER
JACKSCREW SUPPORT
SEE A
I-FRAME
BRACKETS (EXAMPLE, 4 LOCATIONS)
FRONT LUG
TURNBUCKLE ASSEMBLY
JACKSCREW
SUPPORT

MID-LENGTH PIN
TOP END STOP
STABILIZER LUGS
JACKSCREW

UPPER GIMBAL A A-AA
RETAINER
SAFETY PIN
STABILIZER
WING BOX
BALLSCREW
ACTUATOR
ANTIROTATION
CABLES

BB
FWD
RETAINER
LOWER GIMBAL A B-B
Stabilizer Trim Upper and Lower Gimbal Inspection Figure 601 (Sheet 1)
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A 757 MAINTENANCE MANUAL
NUT SPACER
UPPER GIMBAL ASSEMBLY
STABILIZER-TRIM BALLSCREW ACTUATOR PRIMARY BRAKE HOUSING
AFT
C C
PIN ASSEMBLY FOR LOWER GIMBAL (2 LOCATIONS)
C-C
Stabilizer Trim Upper and Lower Gimbal Inspection
Figure 601 (Sheet 2)

SOCKET
SLEEVE
PRIMARY BRAKE HOUSING
LOWER
GIMBAL

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A

757 MAINTENANCE MANUAL
 (d)  
11H11 or 11C05, STAB TRIM CONT L

 (e)  
11H20, STAB TRIM CONT R

 S 016-014
 WARNING: STAY OFF SERVICE ACCESS-DOOR 311AL AND CONTROLS BAY
_______ ACCESS-DOOR, 313AL. THE WEIGHT OF A PERSON CAN CAUSE THE SPRING LOADED LATCHES TO RELEASE. A PERSON CAN BE INJURED IF HE FALLS THROUGH THE DOOR.
 ú (4) Open horizontal-stabilizer access door, 311AL (AMM 06-42-00/201).
 S 496-008
 (5)  
Install the adjustable beam assembly for the horizontal stabilizer jackscrew (Fig. 603).

 (a)  
Lock the horizontal stabilizer as follows:

 1)  Install four bracket assemblies to the first two upper bulkheads aft of access door 311AL.
 NOTE: Refer to Fig. 603 for the bracket position on the
____ bulkheads as related to the centerline of the airplane.
 2) Use the four pins that are supplied to install the I frame to the bracket. 3) Use the pin that is supplied to install the turnbuckle assembly to the I frame.
 4)  Use the bolts and pins that are supplied to install the trunnion assembly to the stabilizer lugs that are on top of the stabilizer wing box.
 5) Install the lateral frame assembly to the front of the I frame. 6) Turn the turnbuckle assembly until it can be attached to the trunnion.
 7)  If you turn the turnbuckle and it is not a sufficient length to be attached to the trunnion, do the steps that follow: a) Remove the mid-length pin. b) Extend the turnbuckle until it can be attached to the
 trunnion.
 c)  Install the mid-length pin.
 d)  Adjust the turnbuckle.
 8) Attach the turnbuckle to the trunnion. 9) Make sure the turnbuckle is installed vertically along the centerline of the airplane.
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
757
MAINTENANCE MANUAL

1. BUSHING

2. BUSHING
RETAINER
RETAINER
BALLSCREW
8. BALLNUT/ BUSHING
3. GIMBAL/ BALLSCREW
BALLSCREW ACTUATOR 1. BUSHING 2. BUSHING
RETAINER
RETAINER FWD

4. BUSHING/ RETAINER
6.
 BUSHING/PIN

7.
 BUSHING/PIN

11. BUSHING/ BUSHING
4. BUSHING/ RETAINER 10. BUSHING/ BUSHING
UPPER GIMBAL A-A
12. RETAINER/SAFETY PIN
5.
 BUSHING/ RETAINER

6.
 BUSHING/PIN