500 Elevator Hinge Installation
Aug 01/94 Figure 401 (Sheet 2) 27-31-21
Page 403
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
Elevator Hinge Location 500
27-31-21 Figure 401 (Sheet 3) Oct 20/84
Page 404
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
(2) Check that inner race of bearing may be manually rotated in either direction with the fingers. Check that race can be manually misaligned in either direction at any position. Also check bearing and hinge bearing bolt for allowable wear (Ref 27-31-11, Elevator – Inspection/Check).
E. Install Elevator Hinge No. 1
(1)
Position hinge (1) against elevator front spar (3) with lubrication fitting down (below hinge centerline) and temporarily install hinge bearing bolt (11) (Detail A, Fig. 401).
(2)
Check that elevator hinge (1) fits flush with shear plate (2) at elevator front spar (3) within
0.015 inch. If not, add or remove shim (4) as required.
(3)
If shim (4) is required, proceed as follows:
NOTE: Maximum allowable shim thickness is 0.033 inch.
(a)
Trim shim as required to fit between hinge (1) and shear plate (2).
(b)
Withdraw hinge bearing bolt (11) and remove hinge from airplane.
(c)
Thoroughly clean both faces of shim and face of shear plate using cleaning solvent, Series 84 (Ref AMM/SOPM 20-30-84).
WARNING: DO NOT GET SOLVENT IN YOUR MOUTH OR EYES, OR ON YOUR SKIN. DO NOT BREATHE THE FUMES FROM SOLVENTS. SOLVENTS ARE HAZARDOUS MATERIALS. REFER TO PRODUCT MATERIAL SAFETY DATA SHEETS (MSDS) AND LOCAL REQUIREMENTS FOR PROPER HANDLING PROCEDURES.
(d)
Bond required thickness of shim to shear plate at elevator front spar using adhesive.
(4)
If step E.(3) was not accomplished, withdraw hinge bearing bolt (11) and remove hinge (1) from airplane.
(5)
Thoroughly clean face of shim using cleaning solvent, Series 84 (Ref AMM.SOPM 20-30-84), then apply primer and allow to dry before installing hinge.
WARNING: DO NOT GET SOLVENT IN YOUR MOUTH OR EYES, OR ON YOUR SKIN. DO NOT BREATHE THE FUMES FROM SOLVENTS. SOLVENTS ARE HAZARDOUS MATERIALS. REFER TO PRODUCT MATERIAL SAFETY DATA SHEETS (MSDS) AND LOCAL REQUIREMENTS FOR PROPER HANDLING PROCEDURES.
(6)
Position hinge (1) at elevator front spar (3) with lubrication fitting down (below hinge centerline) and loosely install four hinge mounting bolts (7), and washers (6). At lower inboard bolt location, clean surface to provide electrical bonding and place bonding jumper
(5) under washer.
(7)
Install hinge bearing bolt (11) as follows:
(a)
Lightly coat shank and threads of bolt with corrosion preventive compound.
(b)
Install bolt with head outboard, place washer (9) under bolthead and other end of bonding jumper (5) and a washer (9) under nut (8). Clean surface to provide electrical bonding.
(c)
Tighten nut (8) 90 to 100 pound-inches. Align nut with cotter pin hole without exceeding 190 pound-inches, then install cotter pin (10).
(8)
Tighten four hinge mounting bolts (7) 70 to 80 pound-inches.
(9)
Perform test procedure (Ref 27-31-21, A/T).
500
May 01/98 BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. 27-31-21 Page 405
F. Restore Airplane to Normal Configuration
(1)
Install tab lock mechanism access panel.
(2)
Remove tags from control columns.
3. Removal/Installation Elevator Hinge No. 2 (Thrust Hinge)
A. Equipment and Materials
(1) Corrosion Preventive Compound - MIL-C-11796, class 3 (Ref 20-30-21)
B. Prepare for Removal
(1)
Position flight controls hydraulic systems A and B switches to OFF.
(2)
Tag control columns to avoid injury to personnel by unexpected movement of elevator surfaces.
(3)
Remove tab lock mechanism upper and lower access panels located at elevator inboard leading edge.
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27-31-21 Page 406 BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. Oct 20/84
C. Remove Elevator Hinge No. 2
(1)
Remove bolt retainer shield from tab lock mechanism (Ref 27-31-121,
Removal/Installation).
(2)
Remove bolt (17, Detail B, Fig. 401) securing aft end of tab lock mechanism frame assembly (18) to outboard frame attach bracket (16) at elevator front spar (3).
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