NOTE : The installation of the APU is also possible without a removal
____ of the access doors. However, a removal of the doors will:
-
make the access to the APU compartment better.
-
make the installation and use of the hoist tool easier.
-
reduce the risk of injury to the personnel.
-
reduce the risk of damaging the doors with the maintenance platform.
(3)
Make sure that the LIGHT SW 11LJ is set to ON.
(4)
Make sure that the:
-the oil-cooler outlet duct is removed (Ref. TASK 49-52-41-000-003).
-exhaust muffler is disconnected and moved rearwards.
-the APU fuel line is drained corrcectly.
NOTE : If installed, remove the components of the kit for the FLIGHT
____
WITHOUT APU
4. Procedure
_________
Subtask 49-11-11-560-054
A. Preparation of a Replacement Component
(1) Make sure that the APU is installed on a SUPPORT FRAME - APU.
(a) Make sure that the generator is installed correctly (Ref. TASK 24-23-51-400-001).
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(b)
Make sure that the FWD and AFT APU mount brackets (46) are installed correctly.(Ref. TASK 49-12-54-400-003).
(c)
Make sure the APU LP switch is installed correctly (Ref. TASK 28-22-14-400-001).
NOTE : Make sure that the parts retained from the removed
____ component are clean and in the correct condition.
(2) Make sure that the PROTECTOR - THREADS, APU MOUNTING BOLTS are installed on the thread of the AFT APU mount bracket (42).
(3) Fill the APU oil reservoir (Ref. TASK 49-90-00-600-007).
**ON A/C 001-049, 101-105, 201-203,
Subtask 49-11-11-210-066
B. Preparation for Installation
(1)
Make sure the APU compartment is in the correct condition. If necessary clean the APU compartment with CLEANING AGENTS (Material No. 11-001) and a fiber-bristled brush.
(2)
Make sure that the nuts (45), (46) and (48) are in a correct condition .
R NOTE : Obey the para. 3.A.(4) 'Installation of used Bolts and Nuts'
____ R (Ref. TASK 20-21-11-911-001).
(3)
Make sure that the PROTECTOR - THREADS, APU MOUNTING BOLTS are installed on the threads (44) of the FWD APU mount vibration isolators.
(4)
Examine the connection flanges and attachments of the bleed-air duct.
(5)
Examine the exhaust v-clamp and hot nozzle assembly (Ref. TASK 49-81-00-200-008).
(6)
Examine the bellows and sealing ring (Ref. TASK 49-81-00-200-010).
(7)
Examine the exhaust muffler (Ref. TASK 49-81-00-200-009).
(8)
Examine the exhaust duct felt-metal and replace if necessary (Ref. TASK 49-81-41-000-003) and (Ref. TASK 49-81-41-400-003)
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(9) Examine the drain tank for leaks, dents, chafing and cracks. If
necessary replace the drain tank (Ref. TASK 49-17-41-000-003) and
(Ref. TASK 49-17-41-400-003).
(10)
Examine the drain tubes and hoses between the spring adapters and the drain mast. Replace porous hoses and/or bent, kinked, holed or leaking tubes.
(11)
Examine the support assembly of the oil-cooler outlet-duct attachment. If necessary remove (Ref. TASK 49-52-41-000-003) and install a new support assembly (Ref. TASK 49-52-41-400-003).
(12)
Make sure that the threads of the vent and drain valve (21) are clean and in a correct condition.
(13)
Make sure that the:
-electrical cables of the APU starter motor
-ring terminals of the starter motor cables
are clean and in a correct condition.
(14)
Make sure that the:
-phase leads of the APU generator
-ring terminals of the APU generator phase leads
are clean and in a correct condition.
(15)
Put the SUPPORT FRAME - APU (with the APU temporarily installed on it) in the correct position below the APU compartment.
(16)
Make sure that the HOIST - MINILIFT is installed correctly (Ref. TASK 49-00-00-480-003).
(17)
Remove the blanking covers from APU exhaust and hot-nozzle assy-flange.
(18)
Make sure that the hot-nozzle assy-flange is in the temporary position to which it was moved during APU removal.
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