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C.  With sequencing carriage engaged to stop on track and dead weight rollers contacting upper surface of track, check that outside diameter of toggle roller shall clear the forward slope of slot by at least 0.020 inch.
D.  Provide system A hydraulic power. Refer to 27-51-0.
E.  Position flap control lever to FLAP UP detent.
F.  Check that foreflap retracts evenly with no binding.
G.  Remove system A hydraulic power. Refer to 27-51-0.
H.  Check gap between trailing edge of foreflap and top of midflap (flaps retracted). Gap is to be
0.03 inch minimum. If gap is not within limits, defective foreflap (or midflap) is indicated. Replace defective part.
500 
Apr 01/97  BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.  27-51-101 Page 401 

G42471
Outboard Foreflap Installation  500 
27-51-101  Figure 401  May 15/70 
Page 402 
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. 

OUTBOARD FOREFLAP SEQUENCING CARRIAGE - REMOVAL/INSTALLATION
1.  Equipment and Materials
A.  Grease - MIL-G-21164 (DTD 5598) (Ref 20-30-21)
2.  Remove Outboard Foreflap Sequencing Carriage
A.  Remove outboard trailing edge flap (Ref 27-51-72).
B.  Remove bolt and pin attaching stop to sequencing carriage (Fig. 401).
C.  Remove bolts attaching toggle to sequencing carriage.
D.  Remove aft rollers from carriage.
E.  Move the sequencing carriage aft and down to remove it from the flap track.
3.  Install Outboard Foreflap Sequencing Carriage
A.  If existing bushings, bolts, rubstrips or sliders are to be used, check allowable wear
(Ref 27-51-111 I/C).

B.  Tighten the slider attachment fasteners 20 to 30 pound-inches.
NOTE:  Do not exceed 30 pound-inches to install the lockwire in the fastener heads. A 0.020 inch diameter lockwire is optional to the 0.032 inch diameter lockwire at the slider attachment fasteners. Use one washer if needed to achieve bolt torque requirements.
C.  Clean and grease the underside of the sequence carriage track for complete length of travel, making sure that any metal that may have transferred from the carriage rubstrip to the track is removed.
D.  Align sequencing carriage with upper flanges of track and roll forward past track stop.
E.  Install new or used rubstrips as necessary.
F.  Install stop on sequencing carriage. Secure with bolt and pin (Fig. 401).
G.  Install aft rollers on carriage.
H.  Install bolts attaching toggle to sequencing carriage.
I.  Install outboard trailing edge flap (Ref 27-51-72).
Aug 01/96 27-51-111 Page 401 BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.

G42474G18892
Outboard Foreflap Sequencing Carriage Installation  500 
27-51-111  Figure 401 (Sheet 1)  Aug 15/67 
Page 402 
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. 

501  Outboard Foreflap Sequencing Carriage Installation 
Feb 01/74  Figure 401 (Sheet 2)  27-51-111 
Page 403 
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. 

OUTBOARD FOREFLAP SEQUENCING CARRIAGE - INSPECTION/CHECK
1.  General
A.  This data consists of illustrations and a wear limit chart. There is no procedure given for gaining access to the component for removal or replacement after inspection for wear. Refer to Outboard Foreflap Carriage - Removal/Installation for this information.
2.  Outboard Foreflap Sequencing Carriage Wear Limits (Fig. 601)

G18903
500  Outboard Foreflap Sequencing Carriage Wear Limits 
Nov 15/79  Figure 601 (Sheet 1)  27-51-111 
Page 601 
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. 

INDEX NO.  PART NAME  DIM.  DESIGN LIMITS  WEAR LIMITS  REPLACE WORN PART  REPAIR WORN PART  REPAIR INSTR. 
DIAMETER  MAX WEAR DIM.  MAX DIAM CLEAR ANCE 
MIN  MAX 
1  BEARING  ID  0.4370  0.4375  0.4405  0.0040  X 
BUSHING  OD  0.4355  0.4365  0.4330  X 
2  BUSHING  ID  0.3750  0.3765  0.3805  0.0060  X 
BOLT  OD  0.3735  0.3745  0.3690  X 
3  BUSHING  ID  0.2500  0.2540  0.2605  0.0110  X 
BOLT  OD  0.2485  0.2495  0.2390  X 
　
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