(2)
When the APU access door 316AR is closed:
(a)
The seal (1) is fully compressed. There must be a clearance K of
18.0 +2.0 -6.0 mm (0.7086 +0.0787 -0.2362 in.) between the APU plenum (33) and the elbow assembly (26) flanges. If the gap is incorrect, adjust the diffuser (20) assembly in PARA C.3(a).
(b)
There must be a clearance L of 8.0 +4.0 -4.0 mm (0.3149 +0.1574 -0.1574 in.) between the APU plenum (33) and the elbow assembly
(26) outer flanges. Clearance L must be measured at all positions on the four sides of the flanges. If the clearance is incorrect, adjust the diffuser assembly (20) in PARA C.3(b).
(c)
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. Examine the inside edges of the difuser (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 in PARA C.3 (c).
(d)
Make sure that the distance between the air inlet duct and the diffuser flange measures 3.0 -1.0 +0 mm (0.1181 -0.0393 +0.0000 in.) around the circumference. If not satisfactory, adjust as follows in PARA C.3 (d).
(e)
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.
R EFF : 001-049, 101-105, 107-107, 151-199, 49-16-45Page 411 201-210, Config-2 Aug 01/05
CES (3) Open the APU access door 316AR (Ref. TASK 52-41-00-010-001).
(a)
Adjust of the diffuser assembly:
-Remove the diffuser (20) and elbow assembly (26).
-Open the lockwasher (6) and loosen the nut (7).
-Remove the eye-bolt (8) and discard the lock-washer (6).
-Install a new lockwasher (6) and install the eye-bolt (8).
-Adjust the eye-bolt (8) 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 marked grooves.
-Align the eye-bolt (8) and tighten the nut (7).
-Install the diffuser (20) and elbow assembly (26).
-Safety the nut (7) with the lockwasher (6).
-Close the APU access door 316AR (Ref. TASK 52-41-00-410-001).
(b)
Align of the diffuser and elbow assembly:
NOTE : The fittings (27) and (32) have adjustment serrations with
____
a pitch of 0.75 mm (0.0295 in.)
-
Align the diffuser (20) and elbow assembly (26) longitudinally with the fitting (27).
-
Align the diffuser (20) and the elbow assembly (26) laterally with the fitting (32).
-Apply the SPECIAL MATERIALS (Material No. 05-002) to the mating surfaces of the tooth plates (29), (30) and the screws (31).
-Seal the tooth plates with SEALANTS (Material No. 09-016) after installation.
-Apply LUBRICANTS (Material No. 06-001) to the screws (28) and paint the joints with SPECIAL MATERIALS (Material No. 05-005).
-Close the APU access door 316AR (Ref. TASK 52-41-00-410-001).
(c) Adjust of the inside edges of the diffuser:
-Remove the castle nut (12), the washer (10) and the bolt (15).
-Lift the diffuser (20) and elbow assembly (26). Remove and discard the lockwire and loosen the nut (13).
-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.
-Align the eye-bolt (14) and tighten the nut (13).
R EFF : 001-049, 101-105, 107-107, 151-199, 49-16-45Page 412 201-210, Config-2 Aug 01/05
CES
(d) Align the diffuser (20) and elbow assembly (26) longitudinally and laterally with the fitting (27):
-
Apply SPECIAL MATERIALS (Material No. 05-002) to the mating surfaces of the tooth plates (29) and seal them with SEALANTS (Material No. 09-016) after installation.
-
Apply LUBRICANTS (Material No. 06-001) to the screws (28) and paint the connection with SPECIAL MATERIALS (Material No. 05-005).
-Align the diffuser (20) and elbow assembly (26) laterally with the fitting (32) if necessary.
-Apply SPECIAL MATERIALS (Material No. 05-002) to the mating surfaces of the tooth plate (30) and to the screws (31). Seal the tooth plate with SEALANTS (Material No. 09-016) after installation.
NOTE : The serration on the fittings (27) and (32) have a pitch
____
of 0.75 mm (0.0295 in.).
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