(3)
Tag the control columns to avoid injury to personnel by unexpected movement of the elevator surfaces.
(4)
Remove the following access panels (Ref 12-31-81):
(a)
Stabilizer access panels 9107, 9108 and 9109 left stabilizer or 9207, 9208 and 9209 right stabilizer.
(b)
Elevator leading edge access panel located on elevator leading edge at stabilizer trailing edge ribs No. 1 thru 6 (Fig. 502).
C. On Airplanes with Aluminum/Fiberglass Elevators; Adjust Elevator Seals (Fig. 502, Sheet 1)
NOTE: During each seal adjustment, elevator trailing edge must align with index mark on tail cone within 0.06 inch.
(1)
At stabilizer trailing edge ribs No. 1, 3 and 5, adjust flat seals each side of elevator hinge as follows (Fig. 502, View A):
(a)
Loosen seal mounting bolts and adjust seal to provide 0.01 + 0.06/-0.00-inch clearance between seal and elevator hinge.
(b)
Tighten seal mounting bolts and recheck seal clearance.
(2)
At stabilizer trailing edge ribs No. 1, 2, 3, and 4, adjust bulb seals along edge of elevator nose as follows (Fig. 502, View B):
(a)
Loosen seal mounting bolts and adjust seal to provide 0.02 + 0.01-inch clearance between the seal and rib.
(b)
Tighten seal mounting bolts and recheck seal clearance.
(3)
At stabilizer trailing edge ribs No. 2, 4 and 6, adjust bulb seals at elevator front spar as follows (Fig. 502, View C):
(a)
Loosen seal mounting bolts and adjust seal to provide + 0.03/-0.00 inch interference between seal and aft face of stabilizer trailing edge rib.
(b)
Tighten seal mounting bolts and recheck seal tolerance.
(4)
At stabilizer trailing edge ribs No. 1, 2, 3 and 4, adjust bulb seals between balance panel and stabilizer trailing edge rib as follows (Fig. 502, View D):
(a)
Loosen seal mounting bolts and adjust seal to provide 0.02\+ 0.01-inch clearance between seal and rib.
(b)
Tighten seal mounting bolts and recheck seal clearance.
(5)
At stabilizer trailing edge ribs No. 1, 2, 3 and 4, adjust flat seals between balance panel idler hinge and stabilizer trailing edge rib as follows (Fig. 502, View D):
(a)
Loosen seal mounting bolts and adjust seal to provide 0.01 (+ 0.06/-0.00)-inch clearance between seal and rib.
(b)
Before tightening seal mounting bolts, check 0.20-inch gap exists between idler hinge flat seal and balance panel bulb seal.
500
Feb 01/95 BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. 27-31-171 Page 501
Stabilizer Trim Jackscrew Setting 500
27-31-171 Figure 501 Oct 20/91
Page 502
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
EFFECTIVITY
AIRPLANES WITH
ALUMINUM/FIBERGLASS
ELEVATORS
500 Elevator Seal Adjustment
Aug 01/95 Figure 502 (Sheet 1) 27-31-171
Page 503
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
EFFECTIVITY
AIRPLANES WITH GRAPHITE
ELEVATORS
Elevator Seal Adjustment 500
27-31-171 Figure 502 (Sheet 2) Aug 01/95
Page 504
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
F15304
500 Elevator Seal Adjustment
Aug 01/95 Figure 502 (Sheet 3) 27-31-171
Page 505
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
(c) Tighten seal mounting bolts and recheck seal clearances.
(6)
At elevator inboard rib, adjust elevator to body seals between elevator and tail cone as follows (Fig. 502, View E):
(a)
Loosen seal mounting bolts and adjust seal to provide 0.00 (+ 0.03/-0.00)-inch clearance between seal and tail cone.
(b)
Tighten seal mounting bolts and recheck seal clearance.
(7)
Test elevator surface friction and balance (Ref 27-31-0 A/T).
D. On Airplanes with Graphite/Composite Elevators; Adjust Elevator Seals (Fig. 502, Sheet 2)
(1)
Position and hold elevator faired with stabilizer during seal adjustment.
(2)
At stabilizer trailing edge rib No. 3, adjust flat seal to maintain 0.03 ± 0.03 inch clearance between seal and hinge fitting (Fig. 502, View F).
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