Exhaust V-Clamp and Insulation - Inspection
Figure 601/TASK 49-81-00-991-003
CES
(7)
Pull the hot nozzle and bellows assy (7) in FWD direction. Subtask 49-81-00-210-050
B.
Visual Inspection.
(1)
Examine the V-clamp for distortion, cracks, thread damage or heat discoloration. Replace if defective (Ref. AIPC 49810401090).
(2)
Examine the exhaust duct (portion inside the APU compartment) for damage, cracks and discoloration. If the exhaust duct is found to be defective replace the exhaust muffler (Ref. TASK 49-81-41-000-001) and (Ref. TASK 49-81-41-400-001).
(3)
Examine the heat insulation blankets for cracks and missing material, replace if found defective (Ref. AIPC 49810401033) and/or (Ref. AIPC 49810401037).
Subtask 49-81-00-420-051
C. Assemble for Close Access
(1)
Push the exhaust muffler forward on the guide rails.
(2)
Attach the exhaust muffler with the bolts, the bushing, the washers and the castle-nuts.
(3)
TORQUE the castle-nuts to between 1.95 and 2.2 m.daN (14.38 and 16.22 lbf.ft).
(4)
Install the cotter pins (Ref. AIPC 49810401080).
(5)
Install the APU exhaust access fairing 317AL (Ref. TASK 52-41-18-400-001).
(6)
Push the hot nozzle/bellows assembly forward until the hot nozzle flange touches the APU exhaust duct flange.
(7)
Adjust the hot nozzle flange radially to the APU exhaust duct flange. The radial offset should be 0 +4 -4 mm (0.0 +0.16 -0.16 in.).
(8)
Position the clamp (3) on the exhaust coupling flanges with the lockbolts in the 3 and 9 o'clock position.
(9)
Secure the V-clamp (3). Torque the clamp lockbolts - of the basic V-clamp to between 0.81 and 0.93 m.daN (71.68 and
82.30 lbf.in);
or - of the AEROQUIP V-clamp to between 0.31 and 0.34 m.daN (27.43 and
30.08 lbf.in).
(10)
Install the heat insulation upper (1) and lower (2) halves, connect the two halves with MISCELLANEOUS (Material No. 19-010).
(11)
Connect the two halves with corrosion-resistant steel lockwire 0.8mm (0.032in.) to the hot nozzle assembly studs.
(12)
Connect the drain line with the nut to the power-plant drain system.
5. Close-up
________ Subtask 49-81-00-410-051
A. Close Access
(1)
Make sure that the work area is clean and clear of tool(s) and other items.
(2)
Set the LIGHT control switch 11LJ to the off position.
(3)
Close the APU access doors 315AL, 316AR (Ref. TASK 52-41-00-410-001).
(4)
Remove the access platform(s). Subtask 49-81-00-865-053
B.
Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s): 1KD, 2KD
Subtask 49-81-00-860-055
C. Aircraft Maintenance Configuration
(1)
Pressurize the reservoirs of the hydraulic systems.
(Ref. TASK 29-14-00-614-002).
(2)
De-energize the ground service network
(Ref. TASK 24-42-00-862-001).
(3)
Remove the warning notice(s).
TASK 49-81-00-200-002 Detailed Visual Inspection of the Sealing Ring Coupling (GTCP 36-300) WARNING : DO NOT TOUCH THE APU UNTIL IT IS SUFFICIENTLY COOL TO PREVENT BURNS
_______ WHEN YOU DO THE MAINTENANCE TASK(S).
1.
Reason for the Job
__________________
Self Explanatory
2.
Job Set-up Information
______________________
A. Fixtures, Tools, Test and Support Equipment
-------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific circuit breaker(s) safety clip(s)
No specific access platform 3.0 m (9 ft. 10 in.)
No specific Torque Wrench : range 0.00 to 1.20 m.daN
(0.00 to 9.00 lbf.ft)
B. Consumable Materials
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
Material No. 19-010 USA AMS 5687 LOCKWIRE STAINLESS STEEL ANNEALED 0.8MM DIA (Ref. 20-31-00)
C. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
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