NOTE : The fittings (27) and (32) have adjustment serrations with a
____
 pitch of 0.75 mm (0.0295 in.)

 (a)
 Open the APU access door 316AR.

 (b)
 Align the diffuser (20) and the elbow (26) longitudinally with the fitting (27).

 (c)
 Align the diffuser (20) and the elbow (26) laterally with the fitting (32).

 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.
 (d)
 Apply the SPECIAL MATERIALS (Material No. 05-002) to the mating surface of the tooth plates (29) and (30) and the screws (31).

 (e)
 Seal the tooth plates with SEALANTS (Material No. 09-016) after installation.

 (f)
 Apply LUBRICANTS (Material No. 06-001) to the screws (28) and paint the joints with SPECIAL MATERIALS (Material No. 05-005).

 (3)
 Close the APU access door 316AR.

 (4)
 Get access through the air inlet duct and make sure that the front flange of the diffuser (20) is in the center of the air inlet duct.

 (5)
 Examine the inside edges of the diffuser (20) to make sure that the max. allowed step between the diffuser (20) and the air inlet duct is horizontally 0.3 -0 +0.4 mm (0.0118 -0.0000 +0.0157 in.) and laterally 0.35 -0 +0.55 mm (0.0137 -0.0000 +0.0216 in.). If not satisfactory, adjust as follows:

 (a)
 Open the APU access door 316AR.

 (b)
 Remove the castle nut (12), the washer (10) and the bolt (15).

 (c)
 Lift the diffuser (20) and elbow assembly (26). Remove and discard the safety wire and loosen the nut (13).

 (d)
 Adjust the eye-bolt (14) in half-turns until you get the correct length. (One half-turn equals 0.45 mm (0.0177 in.)). The adjustment range is between the marking grooves.

 NOTE : If a half-turn is too much, screw the eye-bolt (24) out
____
 rather than into the door.

 (e) Align the eye-bolt (14) and tighten the nut (13).
 (6) Make sure that the distance between the air inlet duct and the flange of the diffuser (20) measures 3.0 -1.0 +0 mm (0.1181 -0.0393 +0.0000 in.) around the circumference. If not satisfactory, adjust as follows:
 (a) Align the diffuser (20) and elbow assembly (26) longitudinally and laterally with the fitting (27).
 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.
 (b)
 Apply SPECIAL MATERIALS (Material No. 05-002) to the mating surfaces of the tooth plates (29).

 (c)
 Seal the tooth plates with SEALANTS (Material No. 09-016) after installation.

 (d)
 Apply LUBRICANTS (Material No. 06-001) to the screws (28).

 (e)
 Paint the connection with SPECIAL MATERIALS (Material No. 05-005).

 (f)
 Align the diffuser (20) and elbow (26) laterally with the fitting

 (32) if necessary.
 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.
 (g)
 Apply SPECIAL MATERIALS (Material No. 05-002) to the mating surface of the tooth plate (30) and to the screws (31).

 (h)
 Seal the tooth plate with SEALANTS (Material No. 09-016) after the installation.

 NOTE : The fittings (27 and 32) have a pitch of parallel toothing
____
 of 0.75 mm (0.0295 in.).

 (i) Adjust the length of the tie-rod (22) by max 311.5 +10.0 -10.0 mm (12.2637 +0.3937 -0.3937 in.) if necessary.
 Subtask 49-16-45-420-054
 D. Final Installation of the Air Intake Diffuser and Elbow
 (1)
 Tighten and safety all the nuts.

 (2)
 Safety the castle nut (24) with a new cotter pin (25).

 (3)
 Safety the castle nut (12) with a new cotter pin (11)
　
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