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29-21-18
ALL ú ú 01 Page 405 ú May 28/99
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
757 MAINTENANCE MANUAL
S 024-011
(10) Remove the wire harness from the RAT strut housing.
TASK 29-21-18-424-012
3. Install Wire Harness for the Ram Air Turbine (RAT)__________________________________________________
A. Consumable Materials
(1)
A00064 Sealant - RTV 732
B.
References
(1)
AMM 29-21-00/201, Ram Air Turbine (RAT) System
(2)
AMM 29-21-15/501, Ram Air Turbine (RAT) Tachometer Speed Sensor
(3)
AMM 29-21-20/201, Ram Air Turbine (RAT) Strut Position Limit Switch
(4)
AMM 29-21-21/201, Ram Air Turbine (RAT) Blade Lock Limit Switch
C.
Access
(1)
Location Zones
198 Wing to Body - Aft Lower Half (Right)
(2)
Access Panel
198MR RAT Compartment
D.
Install the Wire Harness
S 424-013
(1)
Put the wire harness on the RAT strut housing (Fig. 401).
S 434-014
(2)
Put the electrical connector and bracket on the top to the RAT strut housing.
S 434-015
(3)
Install the screws to attach the bracket to the top of the RAT strut housing.
NOTE: Use the outboard screw to attach the ground connection for
____ the wire harness.
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
29-21-18
ALL ú ú 01 Page 406 ú May 28/99
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
757
MAINTENANCE MANUAL
S 434-016
(4) Tighten the screws to 20-22 pound-inches.
S 434-017
(5) Put the wire harness clamps on the wire harness.
S 434-018
(6) Install the screws to attach the clamps to the RAT strut housing.
S 434-019
(7) Tighten the screw 32-36 pound-inches.
S 434-020
(8) Install the four tie-wrap straps to attach the wire harness to the
cable for the blade lock plunger.
S 434-021
(9) If you removed the limit switches and the speed sensor with the wire
harness, do these steps (Fig. 402):
(a) Put the limit switch, for the strut position, and the bracket
on the top of the RAT strut housing.
(b) Put the clamp on the wire harness.
(c) Align the clamp with the aft hole in the bracket for the limit
switch for the strut position.
(d) Install the screws to attach the clamp and the bracket, for the
limit switch for the strut position, to the RAT strut housing.
(e) Tighten the screws by hand until you adjust the limit switch
for the strut position.
(f) Put the limit switch, for the blade lock, and the switch cover
in the hole at the bottom of the RAT strut housing.
(g) Install the screws to attach the switch cover to the RAT strut
housing.
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