**ON A/C 051-051,
 49-16-45-991-001-A Fig. 401
R **ON A/C 001-003, 051-099, 401-499,
 Post SB 49-1050 For A/C 051-051,
 49-16-45-991-001 Fig. 401A
R **ON A/C 001-003, 051-099, 401-499,
 49-16-45-991-002 Fig. 402
 **ON A/C 051-051,
 49-16-45-991-003-A Fig. 403  -------------------------------------------------------------------------------

REFERENCE  DESIGNATION
 -------------------------------------------------------------------------------
R  **ON A/C 001-003, 051-099, 401-499, Post SB 49-1050 For A/C 051-051, 49-16-45-991-003 Fig. 403A

R  **ON A/C 001-003, 051-099, 401-499,
 3. Job Set-up
__________
 Subtask 49-16-45-860-051

 A. Aircraft Maintenance Configuration
 (1)
 Make sure that the aircraft electrical circuits are energized (Ref. TASK 24-41-00-861-002).

 (2)
 On the panel 25VU, make sure that the APU MASTER SW pushbutton switch is off.

 (3)
 Make sure that there is a warning notice in the cockpit to tell persons not to start the APU.

 (4)
 Make sure that hydraulic systems are depressurized
 (Ref. TASK 29-00-00-864-001).

 Subtask 49-16-45-865-051
 B. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged
 -------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------121VU APU/APU/CTL 2KD L42 121VU APU/ECB/SPLY 1KD L41

 Subtask 49-16-45-010-055
 C. Get Access
 (1)
 Make sure that the access platform is in position below the APU compartment.

 (2)
 Make sure that the APU access doors 315AL and 316AR are open (Ref. TASK 52-41-00-010-001).

 (3)
 Make sure that the LIGHT control SW 11LJ is set to the on position.

 4. Procedure
_________
 **ON A/C 051-051,

 (Ref. Fig. 401/TASK 49-16-45-991-001-A) R **ON A/C 001-003, 051-099, 401-499, Post SB 49-1050 For A/C 051-051, (Ref. Fig. 401A/TASK 49-16-45-991-001) R **ON A/C 001-003, 051-099, 401-499,
 (Ref. Fig. 402/TASK 49-16-45-991-002)
 **ON A/C 051-051,

 (Ref. Fig. 403/TASK 49-16-45-991-003-A) R **ON A/C 001-003, 051-099, 401-499, Post SB 49-1050 For A/C 051-051, (Ref. Fig. 403A/TASK 49-16-45-991-003)

 Air Intake Diffuser and Elbow
 Figure 402/TASK 49-16-45-991-002

 CES

 APU Plenum/Intake Elbow Interface - Adjustment Figure 403/TASK 49-16-45-991-003-A
 EFF : 051-051, 49-16-45Page 412 Config-1 May 01/05
 CES

 APU Plenum/Intake Elbow Interface - Adjustment
 Figure 403A/TASK 49-16-45-991-003

 CES R **ON A/C 001-003, 051-099, 401-499,

 Subtask 49-16-45-220-050
 A. Preparation for Installation
 (1)
 Clean the component interface and/or the adjacent area.

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

 (3)
 Make on inspection for damage of the inner and outer surface of the diffuser (20) and elbow assembly (26). Examine for damage and pollution the guide vanes in the elbow assembly (26). Replace or clean them as necessary.

 (4)
 Make an inspection of the seal (1) for damage.
 If necessary, replace the seal as follows:

 (a)
 Remove the nuts (4), the washers (3) and the screws (2).

 (b)
 Remove the strips (5) and the seal (1) from the elbow assembly (26).

 (c)
 Protective Treatment

 WARNING : USE SOLVENTS/CLEANING AGENTS, SEALANTS AND OTHER
_______ SPECIAL MATERIALS ONLY WITH A GOOD SUPPLY OF AIR. OBEY THE MANUFACTURERS INSTRUCTIONS. PUT ON PROTECTIVE CLOTHING. DO NOT GET THEM IN YOUR MOUTH. DO NOT SMOKE. DO NOT BREATHE THE GAS. THESE MATERIALS ARE POISONOUS, FLAMMABLE AND SKIN IRRITANT. GET MEDICAL HELP IF YOUR SKIN OR EYES BECOME IRRITATED.
 1 Apply SPECIAL MATERIALS (Material No. 05-002) to the screws
_ (2), the washers (3) and the nuts (4).
 (d)
 Align the seal (1) and the strips (5) on the elbow assembly (26).

 (e)
 Install the screws (2), the washers (3) and the nuts (4).

 (5)
 Make sure that the basic adjustment F and J of the eye-bolts (8 and 14) is 23.1 mm (0.9094 in.).
　
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