757
MAINTENANCE MANUAL
STABILIZER BALLSCREW ACTUATOR
SEE A
9. STABILIZER
BALLSCREW
ACTUATOR
8. BOLT
7. WASHER (2)
6. NUT
(4 LOCATIONS)
5. SEAL DRAIN LINE
4. HYDRAULIC LINE FOR THE MOTOR CASE DRAIN
3. DRIVE HYDRAULIC MOTOR
(2 LOCATIONS)
2. HYDRAULIC LINE
FOR AIRPLANE
NOSE UP MOVEMENT
1. HYDRAULIC LINE FOR AIRPLANE NOSE DOWN MOVEMENT
STABILIZER BALLSCREW ACTUATOR
(FRONT VIEW)
(COMPONENTS FOR THE RIGHT DRIVE HYDRAULIC MOTOR ARE IDENTIFIED,
COMPONENTS FOR THE LEFT MOTOR ARE EQUIVALENT)
A
Drive Hydraulic Motor Installation
Figure 401
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A
757 MAINTENANCE MANUAL
(d)
11H11 or 11C05, STAB TRIM CONT L
(e)
11H20, STAB TRIM CONT R
S 014-006
WARNING: STAY OFF THE SERVICE ACCESS DOOR, 311AL AND THE ELEVATOR
_______ CONTROL ACCESS DOOR, 313AL. YOUR WEIGHT CAN RELEASE THE SPRING-LOADED LATCHES ON THE DOOR. IF YOU FALL THROUGH THE DOOR, INJURIES CAN OCCUR.
(5)
Open the access door for the forward stabilizer compartment, 311AL ú (AMM 06-42-00/201).
D.
Remove the Drive Hydraulic Motor (Fig. 401)
S 034-007
(1)
Disconnect the hydraulic lines and the drain lines from the hydraulic motor (3).
S 034-009
(2)
Put plugs in the lines and caps on the ports.
S 034-010
(3)
Hold the hydraulic motor (3) and remove the bolts (8) that attach it to the stabilizer ballscrew actuator.
S 024-011
(4)
Remove the hydraulic motor (3).
TASK 27-41-11-424-012
3. Install the Hydraulic Motor
___________________________
A. Consumable Materials
(1)
D00153 Fluid - Hydraulic BMS 3-11
(2)
C00259 Primer BMS 10-11 Type 1 ú (3) D00633 Grease, Corrosion Preventive - BMS 3-33 (Recommended) ú (4) D00013 Grease - MIL-PRF-23827 (Alternative)
B.
Parts
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A
757
MAINTENANCE MANUAL
~............................................................................... | MM | | IPC | ................. ............................ | FIG | ITEM | NOMENCLATURE | SUBJECT | FIG | ITEM | ................................................................................. | 401 | 3 |Hydraulic Motor | 27-41-10 | 01 | 45 | | | 6 |Nut | | | 51 | | | 7 |Washer | | | 50 | | | 8 |Bolt | | | 48 | 2........…......…....................................…...........….....…........1
C. References ú (1) AMM 06-42-00/201, Empennage Access Doors and Panels ú (2) AMM 24-22-00/201, Electrical Power - Control ú (3) AMM 29-11-00/201, Main (Left, Right, and Center) Hydraulic Systems
D. Access
(1)
Location Zones 211/212 Control Cabin 311/312 Area Aft of Pressure Bulkhead to BS 1787.45
(2)
Access Panel
311AL Forward Stabilizer Compartment
E.
Install the Hydraulic Motor (Fig. 401)
S 624-013
(1)
Clean and apply a large quantity of grease to the part of the splined shaft (located on the gearbox) that you can see.
(2)
Replace the O-ring if there is deterioration.
(3)
Clean the mating surfaces of the hydraulic motor and the gearbox.
S 964-014
S 164-015
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