(2)
Position rigging block in cam slot with cam roller against block, tape block to cam drum.
T. Tighten adjusting nuts as necessary to obtain cable tension of 100 +10 pounds while maintaining 0.42-inch dimension obtained in step S.
NOTE: Cables should be adjusted to 100-pound tension at temperature of approximately 70°F. As temperature decreases, tension should be decreased and as temperature increases, tension should be increased. However, the 10-pound tolerance should not be exceeded.
When adjusting tension of cables, place tensiometer on cable between rigging pins and aft cable adjusting point. Deflect cable away from boom to install tensiometer then release while making tension adjustments.
27-51-351 May 01/99 Page 404
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
U. Install cable guard (4).
V. Remove rigging pins F-5 and F-6 from boom.
W. Provide system A hydraulic power (Ref 27-51-0).
X. Extend and retract flaps. Check for proper operation of aft flap drive mechanism.
Y. Remove system A hydraulic power (Ref 27-51-0).
Z. Install access panels L8476-8477/8576-8577R. AA. Install inboard flap track fairing (Ref 27-51-141).
500
May 01/99 BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. 27-51-351 Page 405
INBOARD FLAP TOGGLE ASSEMBLY - REMOVAL/INSTALLATION
1. General
A. The inboard flap toggle assemblies may be removed without removing the foreflap from the airplane.
B. Removal of the inboard flap toggle assemblies is accomplished by removing the forward and aft cam follower bearings.
C. Access holes in the main carriage cams, on top of the midflap carriage, are provided to allow removal of the cam follower bearings.
D. Replace one toggle assembly at a time when both toggle assemblies of a flap are to be replaced.
2. Equipment and Materials
A. Grease - MIL-G-23827 (Ref 20-30-21)
B. Grease - BMS 3-24 (Ref 20-30-21)
3. Remove Inboard Flap Toggle Assembly (Fig. 401)
A. Remove inboard flap track fairing (Ref 27-51-141 R/I).
B. Provide system A hydraulic power (Ref 27-51-00 MP).
C. Position flap control lever to 15-unit detent.
D. Remove system A hydraulic power (Ref 27-51-0 MP).
E. Check alignment of the forward cam follower bearings with access holes in sides of main carriage cams. If forward cam follower bearings and access holes are not aligned, proceed as follows:
(1)
Make sure these circuit breakers on the main power distribution panel, P6, are closed:
(a)
ALT T.E. FLAP DRIVE-A.C.
(b)
FLAPS
(2)
Position the alternate flaps master switch to ARM.
(3)
Actuate the alternate flaps position switch to UP or DOWN as necessary to align forward cam follower bearings with access holes in the main carriage cams.
(4)
Depressurize hydraulic system A (Ref 27-51-00 MP).
F. Remove toggle assembly.
(1)
Remove the two forward cam follower bearings of the toggle assembly.
(2)
Roll the toggle assembly forward to align the aft cam follower bearings with the access holes in the main carriage cam.
(3)
Remove the two aft cam follower bearings of the toggle assembly.
(4)
Remove the toggle assembly from the main carriage.
500
Feb 20/90 BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. 27-51-361 Page 401
Inboard Flap Toggle Assembly 500
27-51-361 Figure 401 (Sheet 1) Feb 20/90
Page 402
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
500 Inboard Flap Toggle Assembly
Feb 20/90 Figure 402 (Sheet 2) 27-51-361
Page 403
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
4. Install Inboard Toggle Assembly (Fig. 401)
A. If existing bushings and/or bearings are to be reused, check allowable wear (Ref 27-51-41 I/C).
B. Position toggle assembly so that aft cam follower bearings can be installed.
(1)
Coat threads and shank of cam follower bearings with BMS 3-24 grease prior to installation.
(2)
Install bushings on shanks of the cam follower bearings.
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