WARNING: SERIOUS INJURY CAN RESULT TO PERSONNEL IF GROUND LOCKS ARE NOT PROPERLY INSTALLED. ATTEMPT TO DEPLOY THRUST REVERSERS AFTER INSTALLING GROUND LOCKS. REVERSERS SHOULD NOT DEPLOY.
(2)
Remove tailpipe fairing per step 3.
(3)
Remove deflector door fairing per step 2. before lowering engine.
(4)
Lower engine as required to gain access to hydraulic line disconnect points (Ref Chapter 71).
B. Remove Fixed Fairing
WARNING: FIXED FAIRING EDGES ARE EXTREMELY SHARP AND CAN INFLICT SERIOUS INJURY TO PERSONNEL. EDGES SHOULD BE TAPED BEFORE HANDLING FIXED FAIRING. REMOVE TAPE AFTER INSTALLING FAIRING.
(1)
Disconnect hydraulic lines from fittings on fixed fairing, and cap lines (Fig. 403).
(2)
Disconnect hydraulic lines from shroud bulkhead and cap lines.
(3)
Remove clamps attaching hydraulic lines to tailpipe extension, and remove hydraulic lines.
(4)
Remove screws attaching forward end of fixed fairing to engine shroud.
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78-32-162 Page 408 BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. Oct 20/84
H27598
500 Fixed Fairing Installation
Feb 01/76 Figure 403 78-32-162
Page 409
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
(5)
Remove bolts, washers and nuts securing turnbuckles to tailpipe extension.
(6)
Remove fixed fairing from thrust reverser assembly.
C. Install Fixed Fairing
(1)
Position fixed fairing on tailpipe extension with turnbuckles aft (Fig. 403).
(2)
Attach forward part of fixed fairing to engine shroud with screws.
(3)
Attach turnbuckles to tailpipe extension with bolts, washers and nuts.
(4)
Position hydraulic lines on tailpipe extension and secure with clamps.
(5)
Remove caps from hydraulic lines and connect lines to fittings on shroud bulkhead.
(6)
Remove caps from hydraulic lines, and connect lines to fittings on fixed fairing.
NOTE: Check that the stow and deploy hydraulic lines are connected to the stow and deploy fittings respectively.
(7)
Raise engine and tighten cone bolts (Ref Chapter 71).
(8)
Reactivate thrust reverser hydraulic system by removing ground locks from both thrust reverser isolation valves.
(9)
Deploy deflector doors through 5 cycles to remove entrapped air from hydraulic lines and check for leaks.
WARNING: PERSONNEL MUST STAY CLEAR OF THRUST REVERSER WHEN IT IS ACTUATED TO PREVENT BEING CAUGHT BY ROTATING DEFLECTOR DOORS.
(10)
Deactivate thrust reverser hydraulic system by installing ground locks on both thrust reverser isolation valves.
WARNING: SERIOUS INJURY CAN RESULT TO PERSONNEL IF GROUND LOCKS ARE NOT PROPERLY INSTALLED. ATTEMPT TO DEPLOY THRUST REVERSERS AFTER INSTALLING GROUND LOCKS. REVERSERS SHOULD NOT DEPLOY.
(11)
Install deflector door fairing on upper deflector door per step 2.
(12)
Install tailpipe fairing per step 3.
(13)
Reactivate thrust reverser hydraulic system by removing ground locks from both thrust reverser isolation valves.
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THRUST REVERSER.FAIRING - ADJUSTMENT/TEST
1. General
A. The thrust reverser fairing consists of a fixed fairing, deflector door fairing and the tailpipe fairings. There are no adjustments necessary for the fixed fairing. For the deflector door fairing adjustment, refer to the deflector door fairing removal and installation procedure per 78-32-162.
B. The adjustment procedure for the tailpipe fairing is limited to the following:
(1)
Tailpipe fairing safety latch actuating force adjustment.
(2)
Tailpipe fairing tension latches closing force adjustment.
2. Equipment and Materials
A. Thrust Reverser Isolation Valve Ground Lock Cap and Pin Assembly - F80109-3 or F80109-9 or equivalent
3. Tailpipe Fairing Adjustment
A. Deactivate thrust reverser hydraulic system by installing ground locks on both thrust reverser isolation valves.
WARNING: SERIOUS INJURY CAN RESULT TO PERSONNEL IF GROUND LOCKS ARE NOT PROPERLY INSTALLED. ATTEMPT TO DEPLOY THRUST REVERSERS AFTER INSTALLING GROUND LOCKS. REVERSERS SHOULD NOT DEPLOY.
B. Safety Latch Adjustment
(1)
Open tailpipe fairings.
(2)
Check force required to actuate safety latch lever to the unlatched position. Lever should actuate with an applied force of 9 (±3) pounds at handle end (near detent holes).
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