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R  (h) For the APU bleed-air ducts between the FR49 and FR52: 
R  - Make sure that the access panel 151DW is removed. 
R  (i) For the APU bleed-air ducts between the FR52 and FR55: 
R  - Make sure that the access panel 151EW is removed. 
R  (j) For the APU bleed-air ducts between the FR55 and FR58: 
R  - Make sure that the access panel 151HW is removed. 
R  (k) For the APU bleed-air ducts between the FR58 and FR59: 
R  - Make sure that the access panel 151JW is removed. 
R  (l) For the APU bleed-air ducts between the FR59 and FR62: 
R  - Make sure that the access panel 161AW is removed. 
R  (m) For the APU bleed-air ducts between the FR62 and FR63: 
R  - Make sure that the access panel 161BW is removed. 
R  (n) For the APU bleed-air ducts between the FR63 and FR65: 
R  - Make sure that the access panel 161CW is removed. 
R  (o) For the APU bleed-air ducts between the FR65 and FR70: 
R  - Make sure that the partition panel 161DW is removed (Ref. TASK 
R  25-55-12-000-001). 
R  (p) For the APU bleed-air ducts between the FR70 and FR77: 
R  - Make sure that the access door 312AR is open. 
R  (q) For the APU bleed-air ducts aft of FR77: 
R  - Make sure that the access door 314AR is open. 
R  (3) Make sure that the access platform is in position below the 
R  applicable access panel. 

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 **ON A/C ALL

 Subtask 36-12-41-865-051
 B. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged
 -------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------49VU AIR BLEED/X FEED/VALVE/BAT 2HV D13 49VU AIR BLEED/ENG 1/CTL 3HA1 D12 49VU AIR BLEED/ENG 1/MONG 2HA1 D11
 122VU AIR BLEED/ENG 2/CTL 3HA2 Z23 122VU AIR BLEED/ENG 2/MONG 2HA2 Z22 122VU AIR BLEED/X FEED VALVE/NORM 1HV Z20
 4. Procedure
_________ (Ref. Fig. 401/TASK 36-12-41-991-001, 402/TASK 36-12-41-991-002, 403/TASK 36-12-41-991-015) Subtask 36-12-41-420-050
 A. Installation of the Bleed-Air Duct
 (1)
 Clean the component interface and/or the adjacent area.

 (2)
 Do an inspection of the component interface and/or the adjacent area.

 (3)
 Remove the blanking caps from the bleed-air duct flanges (15) and (19).

 (4)
 Check the bleed-air duct flanges (15) and (19) for correct condition.

 (5)
 Lubricate the seal (16) with COMMON GREASE (Material No. 04-007). NOTE : This material is a molybdenum disulfide powder. Before you can

____ apply it, you must make a paste. To do this, mix the powder with pure water or white spirit.

 (6)
 Install the seal (16) in the duct (13) (Ref. TASK 20-26-00-910-002).

 (7)
 Install the duct (13).

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 (8)
 Install the connecting rods (14) with the bolts (5), the washers (7) and the nuts (8).

 (9)
 Install the clamp (20) and torque the nut with the value given on the clamp.

 (10)
 Install the spring rods (11) with the bolts (12), the washers (10) and the nuts (9).

 (11)
 Make sure that the clearance "X" is parallel around the ducts. NOTE : A deviation of 1.5 mm (0.0590 in.) for a 3.5 in. (88.8998 mm)

____ and 1.8 mm (0.0708 in.) for a 4.0 in. (101.5998 mm) duct is permitted.

 (12)
 If necessary adjust the ducts with the connecting rods (14). NOTE : Make sure that there is no tension on the ducts.

____

 (13)
 Install the bonding straps (2) with the bolt (1), the washer (3) and the nut (4) (Ref. TASK 20-28-00-912-006).

 (14)
 Install the APU overheat sensing elements (6) (Ref. TASK 36-22-17-400-001).

 Subtask 36-12-41-865-052
 B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s): 1HV, 2HV, 2HA1, 2HA2, 3HA1, 3HA2
 Subtask 36-12-41-710-050
 C. Do the leak test of the APU bleed air supply system (Ref. TASK 36-12-00-790-001).
 1EFF : ALL 1 36-12-41Page 419 1 1 May 01/04R 1 1 1CES 1

 5. Close-up
________

R **ON A/C 001-049, 051-099, 101-149, 201-299,

 Subtask 36-12-41-410-051
 A. Close Access
 (1)
 Make sure that the work area is clean and clear of tool(s) and other items.
　
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