KRUEGER FLAP - REMOVAL/INSTALLATION · B. € Circuit Breaker Safety Clips and Tags C. € Torque Wrench 12 to 22 lbf.ft (1.6 to 3.0 m.daN) D. € Warning Notices Prohibiting Use

KRUEGER FLAP - REMOVAL/INSTALLATION

WARNING: FLIGHT CONTROLS - MAKE SURE THAT THE GROUND SAFETIES ANDNOTICES ARE IN POSITION.FLIGHT CONTROLS - MAKE SURE THAT THE TRAVEL RANGES OF THECONTROL SURFACES ARE CLEAR.HYDRAULICS - BEFORE PRESSURIZING, MAKE SURE THAT THECONTROLS MATCH THE SURFACE POSITION.ELECTRICAL POWER - BEFORE POWER IS SUPPLIED TO THEAIRCRAFT MAKE SURE THAT ANY ELECTRICAL CIRCUIT UPON WHICHWORK IS IN PROGRESS IS ISOLATED.

1. Reason for the Job

A. Removal/Installation of the hinged door.

B. Removal/Installation of the folding nose only.

C. Removal/Installation of the Krueger flap and folding nose.

D. Removal/Installation of the flight control rod.

2. Hinged Door

A. Equipment and Materials

ITEM DESIGNATION

A. Access Platform 4 m (13 ft)

B. Circuit Breaker Safety Clips and Tags

C. Torque Wrench, 31 to 40 lbf.in. (0.35 - 0.45m.daN)

D. Torque Wrench, 75 to 90 lbf.ft (10.17 to 12.20m.daN)

E. Warning Notices Prohibiting Use of Slats andKrueger Flap Systems

F. SL90.313-0.8750 Installation Tool

G. SL90.314-0.8750 Removal Tool

H. SL90.374-0.8750 Wrench Tool

J. 98A27808011000 Rigging Pin - Krueger Flap

K. Cotter Pins

L. Material No. 04-004 Common Greases (Ref. 20-31-00)

P.Blk EFFECTIVITY: FED ALL 27-80-19-04Printed - Date: 11/29/2012 Time: 11:13:51Copyright © 2012 FedEx Express Corporation, Memphis TN, 38194, All rights reserved.

Page 1 of 38JAN 16/2012

ITEM DESIGNATION

Referenced Procedures

- (Ref. 20-21-16, P.Block 001)

STA LOK Nuts and Lockwashers

- (Ref. 20-31-00, P.Block 001)

List of Materials Required for AircraftService and Maintenance

- (Ref. 24-41-00, P.Block 301)

AC External Power Control

- (Ref. 29-10-00, P.Block 301)

Main Hydraulic Power

- (Ref. 29-21-00, P.Block 301)

Green Auxiliary Power

B. Procedure

(1) Job Set-Up

(a) Energize the aircraft electrical network (Ref.24-41-00, P. Block 301) .

(b) Pressurize the Green hydraulic system (Ref.29-21-00) or (Ref. 29-10-00, P. Block 301) .

WARNING: IF THE SELECTOR SOLENOID IS USED TOEXTEND THE KRUEGER FLAP IT WILL CAUSETHE AILERON TO DROOP BY 10 DEGREES.

NOTE: If the position of the slats is 15 deg.or greater, the Krueger flaps willalready be extended.

(c) On the Krueger selector solenoid-valve (50CV), atSTA 2612/FR47, push (in) the button II on thesolenoid II to extend the Krueger flap.

(d) Open, safety and tag the circuit breakers thatfollow:

PANEL SERVICE IDENT. LOCATION

127VU FLT CTL/SLATS Line 704


Page 2 of 38JAN 16/2012


127VU FLT CTL/KRUEGER 45CV 704/M62

127VU FLT CTL/FLAPS Line 705

127VU FLT CTL/FLAPS & SLATS POS Line 705





(e) Display the warning notices, prohibiting the useof the slats and the Krueger flap systems.

(f) Put the access platform in position below Zone 513(613).

(g) Engage the rigging pin PN 98A27808011000 throughthe Rib 2B and the outboard bracket.

(2) Removal(Ref. Fig. 401)(Ref. Fig. 402)

(a) Hold the Krueger flap, then use the removal toolPN SL90.314-0.8750 to remove the lockwasher (37)and use the wrench tool PN SL90.374-0.8750 toremove the nut (38) (Ref. 20-21-16, P. Block 001) .

(b) Remove the bolt (35) from the outboard bracket andthe actuator rod eye-end (36). Lower the Kruegerflap and allow it to hang in approximately the mid-travel position. Remove and retain the slidingbushes (34).

(c) Manually move the Krueger flap to get access tothe hinged door pivotbolt (4) and bolt (9)positions.

(d) Remove the cotter-pins (7), the nuts (6), thewashers (5) and the bolts (9) that attach the doorlinks (8) to the outboard brackets.Discard the cotter-pins (7).


Page 3 of 38JAN 16/2012

(e) Remove the cotter-pins (1), the nuts (2), thewashers (3) and the bolts (4) that attach the doorhinge assemblies to Ribs 2A and 2B.Discard the cotter-pins (1).

(f) Remove the hinged door.

(3) Installation(Ref. Fig. 401,402)(Ref. Fig. 403)(Ref. Fig. 404)

(a) Manually move the Krueger flap to get access tothe hinged door pivot-bolt (4) and (9) positions.Apply a layer of grease (Material No. 04-004) tothe hinged door pivot-bolts (4) and put the hingeddoor in position, between the Ribs 2A and 2B.Install the hinged door with the pivot-bolts (4),the washers (3) and the nuts (2).Safety with new cotter-pins (1). Make sure thatthe door moves freely about the hinge axis.

(b) Engage the eye-ends of the door link (8) onto theoutboard bracket.Apply a layer of grease (Material No. 04-004) tothe bolts (9).Install the bolts (9), the washers (5) and thenuts (6), to the outboard bracket

(c) TORQUE the nuts (6) to between 31 and 40 lbf.in(0.35 and 0.45 m.daN) and safety with new cotter-pins (7).

(d) Manually move the Krueger flap and align theactuator rod eye-end (36) with the outboardbracket assy. Apply a layer of grease (MaterialNo. 04-004) to the sliding bushes (34) and thebolt (35). Install the sliding bushes (34) in theoutboard bracket assy then install the bolt (35)through the inboard lug of the outboard bracketassy and the actuator rod eye-end (36).

CAUTION: THE BOLT (35) HEAD MUST BE ON THEINBOARD LUG OF THE OUTBOARD BRACKET ASSY.

(e) Install the nut (38) and use the wrench tool PNSL90.374-0.8750 to TORQUE the nut (38) to between


Page 4 of 38JAN 16/2012

75 and 90 lbf.ft (10.17 and 12.20 m.daN) (Ref.20-21-16, P. Block 001) .

(f) Install the lockwasher (37) then use theinstallation tool PN SL90.313-0.8750 to lock thelockwasher (37) (Ref. 20-21-16, P. Block 001) .

WARNING: IF THE SELECTOR SOLENOID IS USED TORETRACT THE KRUEGER FLAP, IT WILL CAUSETHE AILERON TO RISE BY 10 DEGREES.

(g) Make sure that the into and out-of-wind tolerancesare correct(Ref. Fig. 403,404) . If necessary, remove thescrews (10) and the door skin (for access). Adjustthe shims as applicable, then install the doorskin with the screws (10).

(4) Preparation for test

(a) Remove the safety clips and tags and close theSLATS and KRUEGER circuit breakers on panel 127VU,line 704.

(5) Test

(a) Do the test that follows:

ACTION RESULT

1. On the flight compartmentcenter-pedestal:

-Put the slat and flapontrol-lever inposition 15 (gate 2).

The Krueger flap, the folding nose and the hingeddoor operate and extend smoothly and lock in theextended position.

-Put the slat and flapcontrol-lever inposition 0 (gate 1).

The Krueger flap, the folding nose and the hingeddoor operate and etract smoothly and lock in theclosed position, with the Krueger flap and thehinged door in wing alignment.


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(6) Close-up

(a) Depressurize the Green hydraulic system (Ref.29-21-00) or (Ref. 29-10-00, P. Block 301) .

(b) De-energize the aircraft electrical network (Ref.24-41-00, P. Block 301) .

(c) Remove the safety clips and tags and close theFLAPS circuit breakers on panel 127VU, line 705.

(d) Remove the warning notices.

(e) Remove the access platform.

(f) Make sure that the work area is clean and clear oftools and miscellaneous items of equipment.

3. Folding Nose


ITEM DESIGNATION



C. Torque Wrench 12 to 22 lbf.ft (1.6 to 3.0m.daN)

D. Warning Notices Prohibiting Use of Slats andKrueger Flap Systems

E. SL90.313-0.4375 Installation Tool

F. SL90.314-0.4375 Removal Tool

G. SL90.374-0.4375 Wrench Tool

H. 98A27808011000 Rigging Pin - Krueger Flap

J. Cotter Pins

K. Material No. 04-004 Common Greases (Ref. 20-31-00, P. Block 001)


- (Ref. 20-21-16, P.Block 001)



Page 6 of 38JAN 16/2012

ITEM DESIGNATION

- (Ref. 20-28-11, P.Block 001)

Electrical Bonding

- (Ref. 20-31-00, P.Block 001)


- (Ref. 24-41-00, P.Block 301)


- (Ref. 29-10-00, P.Block 301)


- (Ref. 29-21-00, P.Block 301)


B. Procedure

(1) Job Set-Up











Page 7 of 38JAN 16/2012












(a) During removal of the folding nose assembly, toprevent damage to the seal (26), remove the nuts(22), the bolts (23), the reinforcing strip (24)and the seal (26).

(b) Use the removal tool PN SL90.314-0.4375 to removethe lockwasher (15) and then use the wrench toolPN SL90.374-0.4375 to remove the nut (16).

(c) Hold the folding nose assembly and remove the bolt(18). Make sure that the flight control rod (19),of the folding nose, hangs clear of the control-rod attachment-bracket (17).

(d) Remove the nut (25), the washer (20) and the bolt(21), and disconnect the bonding lead from thefolding nose structure.

(e) Hold the folding nose assembly and remove thecotter-pin (27), the nut (28), the washers (29)and the bolt (30), at all three hinge positions.Discard the cotter-pins (27).


Page 8 of 38JAN 16/2012

(f) Remove the folding nose assembly.

(3) Installation(Ref. Fig. 401,405)

(a) Put the hinge-lugs of the folding nose, inposition in the forks of the Krueger flap.Temporarily install the bolts (30), in the outerhinges of the Krueger flap, with the washers (29)and the nuts (28).

(b) Make sure that the folding nose moves freely aboutthe hinge axis.

NOTE: The maximum permitted misalignment ofthe nose hinge line at the center hingestation, is 1.0 mm (0.04 in), in anydirection, with the bolts (30) fitted inthe outer hinge(s).

(c) Temporarily install the bolt (30), in the centerhinge with the washers (29) and the nut (28).

(d) Manually lift the folding nose to the normallyextended position.Make sure that there is a gap of 1.2 ± 0.5 mm(0.048 ± 0.019 in) between the folding nosetrailing-edge and the Krueger flap.

(e) Remove the nuts (28), the washers (29) and thebolts (30), from all three hinge positions.

(f) Install the seal (26) on the Krueger flap with thereinforcing strip (24), the bolts (23) and thenuts (22).

(g) Apply a layer of grease (Material No. 04-004) tothe bolts (30).Put the folding nose in position, to align withthe Krueger flap and install the bolts (30), thewashers (29) and the nuts (28), in all three hingepositions. Safety with new cotter-pins (27).

(h) Put the flight-control-rod (19) in position andaligned, in the control-rod attachment-bracket(17). Apply a layer of grease (Material No.04-004) to the bolt (18) and install the bolt (18)through the control-rod attachment-bracket (17)and the flight control rod (19).

(j) Use the wrench tool PN SL90.374-0.4375 to installand TORQUE the nut (16) to between 12 and 22lbf.ft (1.60 and 3.0 m.daN). Then use the


Page 9 of 38JAN 16/2012

installation tool PN SL90.313-0.4375 to lock thelockwasher (15) (Ref. 20-21-16, P. Block 001) .

(k) Attach the bonding lead to the folding nosestructure with the nut (25), the washer (20) andthe bolt (21) (Ref. 20-28-11, P. Block 001) .


(l) On the Krueger flap selector-solenoid I(50CV), atSTA2612/FR 47, push (in) the button I andcarefully retract the Krueger flap and the foldingnose. Make sure that the clearance between thefolding nose and the fixed structure of theKrueger box, is not less than 3.00 mm (0.118 in),during the retraction.



(5) Test


ACTION RESULT







Page 10 of 38JAN 16/2012

(6) Close-up







4. Krueger Flap and Folding Nose


ITEM DESIGNATION



C. Torque Wrench 35 to 44 lbf.in. (0.4 to 0.5m.daN)

D. Torque Wrench 14.75 to 75.20 lbf.ft (2.0 to10.2 m.daN)

E. Warning Notices Prohibiting Use of Slats andKrueger Flap Systems

F. SL90.303-1.1250 Wrench Tool

G. SL90.309-1.1250 Installation Tool

H. SL90.310-1.1250 Removal Tool

J. SL90.313-0.7500 Installation Tool

K. SL90.313-0.8750 Installation Tool

L. SL90.314-0.7500 Removal Tool

M. SL90.314-0.8750 Removal Tool


Page 11 of 38JAN 16/2012

ITEM DESIGNATION

N. SL90.374-0.7500 Wrench Tool

P. SL90.374-0.8750 Wrench Tool

Q. 98A27808011000 Rigging Pin - Krueger Flap

R. A0940000W2 Tool - Adjustment, Actuator Rod End

S. Brush

T. Lint-Free Cloth

U. Cotter Pins

V. Lockwire - Corrosion Resistant Steel, Dia.0.032 in. (0.8 mm)

W

X. Material No. 04-004 Common Greases (Ref. 20-31-00, P. Block 001)

Y. Material No. 05-005 Special Materials (Ref. 20-31-00, P. Block001)

Z. Material No. 09-013 Sealants (Ref. 20-31-00, P. Block 001)

AA. Material No. 11-004 Cleaning Agents (Ref. 20-31-00, P. Block001)


- (Ref. 20-21-16, P.Block 001)


- (Ref. 20-28-11, P.Block 001)

Electrical Bonding

- (Ref. 20-31-00, P.Block 001)


- (Ref. 24-41-00, P.Block 301)



Page 12 of 38JAN 16/2012

ITEM DESIGNATION

- (Ref. 27-89-11, P.Block 401)

- (Ref. 29-10-00, P.Block 301)

Position Switch - Krueger Extend

- (Ref. 29-21-00, P. Block301 )



B. Procedure

(1) Job Set-Up














Page 13 of 38JAN 16/2012









(a) Remove the hinged door (Ref. Para. 2.).

(b) Remove the nut (70), the washer (69) and the bolt(68) and disconnect the bonding lead from theinboard hinge bracket.

(c) Remove the Krueger-extend position-switch (Ref.27-89-11, P. Block 401) .

(d) Remove the bolts (46), the washers (47) and thecover plates (48) from the Ribs 2A and 2B.

(e) Remove the bolts (60), the washers (61) and thecover plates (62) and (63) from the Rib 4.

(f) Use the removal tool PN SL90.310-1.1250 to removethe lockwasher (42) from the bolt (49), at theoutboard hinge. Then use the wrench tool PNSL90.303-1.1250 to loosen the nut (43) (Ref.20-21-16, P. Block 001) .

(g) Use the removal tool PN SL90.314-0.7500 to removethe lockwasher (64) from the bolt (71), at theoutboard hinge. Then use the wrench tool PNSL90.374-0.7500 to loosen the nut (65) (Ref.20-21-16, P. Block 001) .

(h) Remove the cotter-pins (72), the nuts (73), thewashers (74) and the bolts (75) from the control-


Page 14 of 38JAN 16/2012

rod support assembly. Discard the cotter-pins(72).

(j) Hold the Krueger flap and use the removal tool PNSL90.314-0.8750 to remove the lockwasher (37) fromthe bolt (35) of the outboard bracket.Then use the notched wrench PN SL90.374-0.8750 toremove the nut (38) (Ref. 20-21-16, P. Block 001) .

(k) Remove the bolt (35) from the outboard bracket andthe actuator-rod eye-end (36). Remove and retainthe sliding bushes (34).

(l) Remove the nut (43) from the hinge bolt (49), atRib 2A and remove the washer (44).

(m) Remove the nut (65) from the hinge bolt (71), atRib 4 and remove the washer (66).

(n) Remove the bolts (49) and (71) and the two failsafe bushes (45) and (67). Retain the two failsafe bushes (45) and (67).

(p) Remove and retain the laminated washers (50) andrecord their position and dimension.

(q) Remove the Krueger flap and folding nose assemblyfrom the aircraft.

(3) Installation(Ref. Fig. 402)

FED 410-414,419,422,427,429-430,434-436,442(Ref. Fig. 407)

FED 401-405,407-409,416-418,420-421,423-426,428,431-433,443,445-499(Ref. Fig. 408)

(a) Put the Krueger flap in position on the wing.

(b) Apply a layer of grease (Material No. 04-004) tothe fail safe bush (67) and the bolt (71). Installthe fail safe bush (67) and the bolt (71) throughthe Rib 4 and the inboard bracket of the Kruegerflap. Install the washer (66), the nut (65) andthe lockwasher (64).Do not lock at this stage.


Page 15 of 38JAN 16/2012

(c) Install the fail safe bush (45) and the bolt (49)through the Ribs 2A and 2B, and the outboardbracket of the Krueger-flap.

(d) If a replacement Krueger flap is being fitted,center the flap as follows:

1) Measure the combined clearance between theRibs 2A and 2B and the outboard bracketassembly.

2) Adjust the laminated washers (50), to takeup the clearance. Make sure that thelaminated washers (50) measure to within ±1.5 mm (0.060 in) of each other.

(e) Remove the fail safe bush (45) and the bolt (49),from the Ribs 2A and 2B. Apply a layer of grease(Material No. 04-004) to the fail safe bush (45)and the bolt (49). Put the applicable laminatedwasher (50) in position and install the fail safebush (45) and the bolt (49). Apply a layer ofspecial material (Material No. 05-005) to thewasher (44). Install the washer (44), the nut (43)and the lockwasher (42) but, do not lock at thisstage.

(f) Apply a layer of special material (Material No.05-005) to the bushes that are loosely installedon the control-rod support-assembly.Then apply a layer of grease (Material No. 04-004)to the bolts (75).

(g) Install the bushes and the bolts (75), that havebeen treated, in the Ribs 2A and 2B and thecontrol-rod support-assembly, with the washers(74) and the nuts (73). TORQUE the nuts (73) tobetween 62 and 71 lbf.in (0.7 and 0.8 m.daN) andsafety with new cotter-pins (72).

(h) Remove the rigging pin PN 98A27808011000 from Rib2B and the outboard bracket. Manually move theKrueger flap over the full travel range, to makesure that the flap functions freely and withoutobstruction.

(j) Fit the rigging pin PN 98A27808011000 through theRib 2B and the outboard bracket (Krueger flapfully extended).

(k) Apply a layer of grease (Material No. 04-004) tothe sliding bushes (34) and the bolt (35). Put the


Page 16 of 38JAN 16/2012

sliding bushes (34) in position, inside of eachaxle bearing, at Rib 2A and Rib 2B.

(l) Make sure that the Krueger flap actuator is stillfully retracted then align the actuator rod eye-end (36) with the outboard bracket.Install the bolt (35). If the bolt (35) cannot befitted, adjust the actuator rod eye-end (36), asfollows:

1) Cut, remove and discard the lockwire fromthe locknut (39). Use the tool PN A0940000W2to loosen the locknut (39). Pull thelockwasher (40) clear and turn the actuatorrod eye-end (36) thru steps of 180 deg.until the correct alignment is made.

2) If the 180 deg. progressive steps prove tobe too large for easy installation of thebolt (35). Hold the actuator rod eye-end(36) tightly and turn the actuator rod thru90 deg. to give a further adjustment of +0.2 mm (0.008 in).

(m) Engage the lockwasher (40) and turn the locknut(39) until it is finger tight.

(n) Apply a layer of grease (Material No. 04-004) tothe bolt (35).Install the bolt (35) through the outboard bracketand the actuator rod eye-end (36) then install thenut (38) and the lockwasher (37), but do not lockat this stage.

(p) Remove the rigging pin PN 98A27808011000 from theRib 2B and the outboard bracket.

(q) Close the circuit breaker 45CV.


(r) On the Krueger flap selector-solenoid I(50CV), atSTA2612/FR 47, push (in) the button I andcarefully retract the Krueger flap. Make sure thatthe clearance between the folding nose and thefixed structure of the Krueger box, is not lessthan 3.00 mm (0.118 in), during the retraction.

(s) Make sure that the Krueger flap is aligned withthe wing and is withinthe into and out-of-wind tolerances (Ref. Fig.403,404) .


Page 17 of 38JAN 16/2012

(t) Make sure that no contact occurs at the actuator,the mechanism, or the Krueger flap.

(u) If the tolerances are not correct, adjust theKrueger flap as follows:

1)FED 401-405,407-409,416-418,420-421,423-426,428,431-433,443,445-499

Close the circuit breaker 45CV.

2) Fully extend the Krueger flaps (Ref. Para.3. A. (3))

3) Open, safety and tag the circuit breaker45CV.

4) Loosen the bolts (76) and (78) at theinboard and outboard brackets, carefullyremove the shims (77) and (79). Adjust theshims (77) and (79) until, with the Kruegerflap fully retracted, the tolerances aremet.

5) TORQUE the bolts (76) and (78), to 2 m.daN.(14.75 lbf.ft.).

1) Close the circuit breaker 45CV.

2) Fully extend the Krueger flaps (Ref. Para.3. A. (3)).

3) Open, safety and tag the circuit breakers45CV.

4) Cut, remove and discard the lockwire. Loosenthe bolts (76) and (78) at the inboard andoutboard brackets and carefully remove theshims (77) and (79). Adjust the shims (76)and (78) until, with the Krueger flap fullyretracted, the tolerances are met.

5) TORQUE the bolts (76) and (78) to 2 m.daN(14.75 lbf. ft.).

6) Safety the bolts (76) and (78) to theinboard and outboard bracket, with lockwire.

(v) Make sure there is continuous contact between theKrueger flap trailing-edge seal and the fixedstructure of the Krueger box, with the Krueger


Page 18 of 38JAN 16/2012

flap in the fully extended position. Make surethat the seal deflection is within 0 to 3 mm (0 to0.118 in).

(w) TORQUE the locknut (39), at the actuator rod eye-end (36), to between 73.7 and 75.2 lbf.ft. (10 and10.2 m.daN) and safety the locknut (39) withlockwire.

(x) Use the wrench tool PN SL90.374-0.8750 to TORQUEthe nut (38) to between 55 and 69 lbf.ft (7.46 and9.36 m.daN). Then use the installation tool PNSL90.313-0.8750 to lock the lockwasher (37) (Ref.20-21-16, P. Block 001) .

(y) Use the wrench tool PN SL90.303-1.1250 to TORQUEthe nut (43), at Rib 2A, to between 105 and 127lbf.ft (14.20 and 17.20 m.daN). Then use theinstallation tool PN SL90.309-1.1250 to lock thelockwasher (42) (Ref. 20-21-16, P. Block 001) .

(z) Use the wrench tool PN SL90.374-0.7500 to TORQUEthe nut (65), at Rib 4, to between 35 and 48lbf.ft (4.75 and 6.51 m.daN). Then use theinstallation tool PN SL90.313-0.7500 to lock thelockwasher (64) (Ref. 20-21-16, P. Block 001) .

(aa) Seal the heads of the assembled hinge bolts (49),(75) and the bolt (46), and the nut (43), asfollows:

1) Use cleaning agent (Material No. 11-004)with a brush and a clean lint-free cloth, tothoroughly clean around the items thatfollow:

-each bolt (75)

-the adjacent structure on Ribs 2A and 2B.

2) Apply a fillet of sealant (Material No.09-013) to form a cap around the head ofeach bolt (75) and on the adjacent structureon Ribs 2A and 2B.

3) Use cleaning agent (Material No. 11-004)with a brush and a clean lint-free cloth, tothoroughly clean around the assembled itemsthat follow:

-the bolt (49)

-the nut (43)

-the washer (44)


Page 19 of 38JAN 16/2012

-the lockwasher (42)

-the adjacent structure on the Ribs 2A and2B.

4) Apply a fillet of sealant (Material No.09-013) to form a cap around the head of thebolt (49), the nut (43), the washer (44) andthe lockwasher (42) and on the adjacentstructure at Ribs 2A and 2B.

5) Use cleaning agent (Material No. 11-004)with a brush and a clean lint-free cloth, tothoroughly clean around the area of theassembled lockwasher (64), at Rib 4. Thenapply a fillet of the sealant (Material No.09-013), to form a cap around the lockwasher(64), the nut (65), the washer (66) and onthe adjacent structure at Rib 4.

(ab) Install the cover plates (48) to the Ribs 2A and2B with the washers (47) and the bolts (46).TORQUE the bolts (46) to between 35 and 44 lbf.in(0.4 and 0.5 m.daN).

(ac) Install the cover plates (62) and (63) at Rib 4,with the washers (61) and the bolts (60). TORQUEthe bolts (60) to between 35 and 44 lbf.in (0.4and 0.5 m.daN).

(ad) Attach the bonding lead to the inboard hingebracket with the bolt (68), the washer (69) andthe nut (70) (Ref. 20-28-11, P. Block 001) .

(ae) Install the Krueger-extend position-switch (Ref.27-89-11, P. Block 401) .

(af) Install the hinged door (Ref. Para. 2).



(5) Test


ACTION RESULT



Page 20 of 38JAN 16/2012

ACTION RESULT





(5) Close-up







5. Flight Control Rod


ITEM DESIGNATION



C. Torque Wrench 1.4 to 3.0 m.daN (10.3 to 22.0lbf.ft)

D. Shim, 2.0 mm (0.08 in) Thick

E. SL90.313-0.4375 Installation Tool

F. SL90.314-0.4375 Removal Tool

G. SL90.374-0.4375 Wrench Tool


Page 21 of 38JAN 16/2012

ITEM DESIGNATION

H. Lint-Free Cloth

J Tie-Wrap or equi (Ref. 20-31-00, P. Block 001)valent (quantity 2)

K. Material No. 04-004 Common Greases

L. Material No. 09-016 Sealants (Ref. 20-31-00, P. Block 001)

M. Material No. 11-004 Cleaning Agents (Ref. 20-31-00, P. Block 001)


- (Ref. 20-21-16, P.Block 001)


- (Ref. 20-31-00, P.Block 001)

List of Materials Required for Aircraft Serviceand Maintenance

- (Ref. 27-87-00, P.Block 501)

Krueger Flap Control

- (Ref. 29-10-00, P.Block 301)


- (Ref. 29-21-00, P.Block 301)


B. Procedure

(1) Job Set-Up

(a) Open, safety and tag these circuit breakers:






Page 22 of 38JAN 16/2012



(b) Put the access platform in position below Zone 513(613).

(c) Remove the access panel 513PL (613PR).

(2) Removal(Ref. Fig. 409)

(a) Use the removal tool PN SL90.314-0.4375 to removethe lockwasher (3) (Ref. 20-21-16, P. Block 001) .

(b) Use the wrench tool PN SL90.374-0.4375 to removethe nut (4) (Ref. AMM 20-21-16, P. Block 301) .

(c) Remove the bolt (5) from the control rod support-assembly.

(d) Use a tie-wrap to hold the flight control rodagainst the control rod support-assembly.

(e) Pressurize the Green hydraulic system (Ref.29-10-00) or (Ref. 29-21-00, P. Block 301) .

(f) On panel 127VU, remove the safety clip and tag andclose the circuit breaker 45CV.


CAUTION: MAKE SURE THE FLIGHT CONTROL ROD AND THETIE-WRAP WILL NOT CONTACT THE FOLDINGDOOR WHEN THE KRUEGER FLAP EXTENDS.DAMAGE COULD OCCUR IF THEY CONTACT THEFOLDING DOOR THE EXTENSION.DURING


Page 23 of 38JAN 16/2012

(g) Push (in) the LH manual pushbutton (solenoid II)on the Krueger flap selector-solenoid valve at STA2612/FR47 and fully extend the Krueger flaps.

(h) On panel 127VU, open, safety and tag the circuitbreaker 45CV.

(j) Depressurize the Green hydraulic system (Ref.29-10-00) or (Ref. 29-21-00, P. Block 301) .

(k) Cut and remove the tie-wrap from the flightcontrol rod/control rod support assemblyinterface.

(l) Use the removal tool PN SL90.314-0.4375 to removethe lockwasher (8) (Ref. 20-21-16, P. Block 001) .

(m) Use the wrench tool PN SL90.374-0.4375 to removethe nut (7) (Ref. AMM 20-21-16, P. Block 301) .

(n) Remove the bolt (6) and the flight control rodfrom the control rod bracket.

(3) Preparation for installation(Ref. Fig. 409)(Ref. Fig. 410)

CAUTION: DO NOT CLEAN THE ROD END BEARING SURFACESBECAUSE THIS WILLREMOVE THE GREASE.

(a) Use the lint-free cloth and the cleaning agent(Material No. 11-004) to clean the control rodbracket, the control rod support-assembly and thebolts (5) and (6).

CAUTION: MAKE SURE THAT THE ANGULAR POSITION OFTHE ROD ENDS IS CORRECT BEFORE YOUINSTALL THE FLIGHT CONTROL ROD. THEANGULAR POSITION OF THE ROD ENDS ISIMPORTANT.

(b) If you are to install a new flight-control rod:

1) Make sure the angular position of the rodends is correct.

2) Measure the distance between the rod endcenters. If necessary, adjust the length ofthe flight control rod to get the nominaldimension given. If you adjust the length,


Page 24 of 38JAN 16/2012

keep the angular position of the rod endscorrect and do not lock the lock plate (2).

(c) If you are to install the flight control rod youremoved, examine the bearing in each of the rodends. The bearings must rotate freely in theirhousings. If a bearing is seized or sticking, youmust replace the complete flight-control rod andadjust it as detailed in step (b).

(4) Installation(Ref. Fig. 409)

(a) Lubricate the bolt (6) with the grease (MaterialNo. 04-004).

(b) Put the flight control rod in position on thecontrol rod bracket.Make sure the lock plate (2) is positioned so thatyou can get to the locking tab through the accesspanel 513PL (613PR).

(c) Attach the flight control rod to the control rodbracket with the bolt (6) and the nut (7). Use thewrench tool PN SL90.374-0.4375 to TORQUE the nut(7) to 1.6 to 3.0 m.daN (12 to 22 lbf.ft) (Ref.20-21-16) , P, Block 1).

(d) Install the lockwasher (8) with the installationtool PN SL90.313-0.4375 (Ref. 20-21-16, P. Block001) .

(e) Apply the sealant (Material No. 09-016) to thehead of the bolt (6) and to the nut (7).

(f) Use a tie-wrap to hold the flight control rodagainst the control rod support-assembly.

(g) Pressurize the Green hydraulic system (Ref.29-10-00) or (Ref. 29-21-00, P. Block 301) .

(h) On panel 127VU, remove the safety clip and tag andclose the circuit breaker 45CV.

WARNING: IF YOU USE THE SELECTOR SOLENOID TORETRACT THE KRUEGER FLAP IT WILL CAUSETHE AILERON TO RISE BY 10 DEGREES.

CAUTION: MAKE SURE THE FLIGHT CONTROL ROD AND THETIE-WRAP WILL NOT CONTACT THE FOLDINGDOOR WHEN THE KRUEGER FLAP RETRACTS.DAMAGE COULD OCCUR IF THEY CONTACT THEFOLDING DOOR DURING THE RETRACTION.


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(j) Push (in) the RH manual pushbutton (Solenoid I) onthe Krueger flap selector-solenoid valve atSTA2612/FR 47, and fully retract the Kruegerflaps.

(k) On panel 127VU, open, safety and tag the circuitbreaker 45CV.

(l) Depressurize the Green hydraulic system (Ref.29-10-00) or (Ref. 29-21-00, P. Block 301) .

(m) Cut and remove the tie-wrap from the flightcontrol rod/control rod support-assemblyinterface.

(n) Lubricate the bolt (5) with the grease (MaterialNo. 04-004).

(p) Put the flight control rod in position on thecontrol rod supportassembly.

(q) Measure the distance the rod end must move to becorrectly aligned with the control rod support-assembly. The distance must be a minimum of 1.5 mm(0.06 in). If the distance is less:

1) Loosen the lock nut (1).

2) Adjust the length of the flight control rodto get the correct distance. Do not tightenthe lock nut (1).

NOTE: With the Krueger flap retractedand the flight control roddisconnected, the folding nose isin contact with the Krueger box.The movement that is necessary toalign the flight control rod withthe control rod support-assemblysets the clearance between thefolding nose and the Krueger box.

(r) Attach the flight control rod to the control rodsupport-assembly with the bolt (5) and the nut(4). Use the wrench tool PN SL90.374-0.4375 to


Page 26 of 38JAN 16/2012

TORQUE the nut (4) to 1.6 to 3.0 m.daN (12 to 22lbf.ft) (Ref. 20-21-16) , P, Block 1).

(s) If you adjusted the length of the flight controlrod:

1) Install a 2 mm (0.08 in) shim between therod end and the inboard lug of the controlrod support-assembly.

2) TORQUE the lock nut (1) to 1.4 to 2.1 mdaN(10.3 to 15.5 lbf.ft).

3) Remove the shim from the control rod support-assembly.

(t) Make sure the flight control rod is free to turnabout the centerline.The flight control rod must turn approximately 4.5degrees, which equals approximately 0.8 mm (0.031in) measured at the outer surface of the flightcontrol rod.

(u) Pressurize the Green hydraulic system (Ref.29-10-00) or (Ref. 29-21-00, P. Block 301) .

(v) On panel 127VU, remove the safety clip and tag andclose the circuit breaker 45CV.


(w) Push (in) the LH manual pushbutton (solenoid II)on the Krueger flap selector-solenoid valve at STA2612/FR47, and fully extend the Krueger flaps.

(x) On panel 127VU, open, safety and tag the circuitbreaker 45CV.

(y) Depressurize the Green hydraulic system (Ref.29-10-00) or (Ref. 29-21-00, P. Block 301) .

(z) Make sure the flight control rod is free to turnabout the centerline.The flight control rod must turn approximately 4.5degrees, which equals approximately 0.8 mm (0.031in) measured at the outer surface of the flightcontrol rod.


Page 27 of 38JAN 16/2012

(aa) If you adjusted the flight control rod, safety thenut (1) with the lock plate (2).

(ab) Install the lockwasher (3) with the installationtool PN SL90.313-0.4375 (Ref. 20-21-16, P. Block001) .

(ac) Apply the sealant (Material No. 09-016) to thehead of the bolt (5) and to the nut (4).

(ad) Remove the safety clips and tags and close theSLATS and KRUEGER circuit breakers on panel 127VU,lines 704 and 705.

(5) Test

(a) Do an operational test of the Krueger flaps (Ref.27-87-00, P. Block 501) . Make sure the flight


Page 28 of 38JAN 16/2012

control rod does not catch on the control rodbracket or the control rod support-assembly.

(6) Close-Up

(a) Install the access panel 513PL (613PR).

(b) Remove the access platform.

(c) Make sure that the work area is clean and clear oftools and miscellaneous items of equipment.

FED ALL

Figure 401Figure 401. Hinged Door - Installation Details(Sheet 1)


Page 29 of 38JAN 16/2012

FED ALL

Figure 402Figure 402. Krueger Flap and Folding Nose - Installation Details(Sheet 1)


Page 30 of 38JAN 16/2012

FED ALL

Figure 403Figure 403. Krueger Flap and Doors - Gaps(Sheet 1)


Page 31 of 38JAN 16/2012

FED ALL

Figure 404Figure 404. Krueger Flap and Doors - Gaps(Sheet 1)


Page 32 of 38JAN 16/2012

FED ALL

Figure 405Figure 405. Folding Nose - Installation Details(Sheet 1)


Page 33 of 38JAN 16/2012

FED ALL



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FED 410-414,419,422,427,429-430,434-436,442


FED 410-414,419,422,427,429-430,434-436,442


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FED 401-405,407-409,416-418,420-421,423-426,428,431-433,443,445-499


FED 401-405,407-409,416-418,420-421,423-426,428,431-433,443,445-499


Page 36 of 38JAN 16/2012

FED ALL

Figure 409Figure 409. Flight Control Rod Installation(Sheet 1)

FED ALL


Page 37 of 38JAN 16/2012

FED ALL

Figure 410Figure 410. Flight Control-Rod Dimensions(Sheet 1)


Page 38 of 38JAN 16/2012

Documents

KRUEGER FLAP - REMOVAL/INSTALLATION · B. € Circuit Breaker Safety Clips and Tags C. € Torque Wrench 12 to 22 lbf.ft (1.6 to 3.0 m.daN) D. € Warning Notices Prohibiting Use