R **ON A/C 001-003, 051-099,
49-23-51-991-008 Fig. 402
R **ON A/C 001-003, 051-099, 401-499,
3. Job Set-up
__________
Subtask 49-23-51-941-053
A. Safety Precautions
(1) Obey the Fuel Safety Precautions (Ref. TASK 28-00-00-910-001).
Subtask 49-23-51-860-054
B. Aircraft Maintenance Configuration
(1)
On the panel 25VU make sure that the APU MASTER SW pushbutton switch is off.
(2)
Make sure that there is a warning notice in the cockpit to tell persons not to start the APU.
(3)
Make sure that hydraulic systems are depressurized
(Ref. TASK 29-00-00-864-001).
Subtask 49-23-51-865-054
C. 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 49-23-51-010-060
D. 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 SW 11LJ is set to the ON position.
4. Procedure
_________ R (Ref. Fig. 401/TASK 49-23-51-991-002) R **ON A/C 001-003, 051-099,
R (Ref. Fig. 402/TASK 49-23-51-991-008) R **ON A/C 001-003, 051-099, 401-499,
Subtask 49-23-51-420-051
A. Installation of the Inlet Guide Vane-Actuator (8014KM)
(1)
Clean the component interface and/or the adjacent area.
(2)
Make sure that the parts retained from the removed component are clean and in the correct condition.
(3)
Do an inspection of the component interface and/or the adjacent area.
(4)
Remove the blanking cap from the APU inlet guide vane-actuator mating face.
(5)
Use the flats of a spanner to hold the inlet-guide vane-actuator rod and install the IGV clevis (1).
NOTE : Make sure that the inlet-guide vane-actuator rod is fully
____ engaged to the bottom of the IGV clevis (1). If not, the position of the IGVs will be incorrect.
(6)
Put the inlet guide vane-actuator (8014KM) (11) with the installed IGV clevis (1) into the APU housing (13), and move the assembly (11) to the side to engage the IGV clevis (1) with the IGV linkage.
(7)
Pull out the inlet guide vane-actuator (8014KM) (11) to make sure that the IGV linkage is engaged.
(8)
Install the washers (2) and the bolts (3). NOTE : If a load compressor containment shield was removed previously
____ do not install the upper bolt of the IGV actuator (Refer to step B.).
(9)
TORQUE the bolts (3) to 1.13 m.daN (99.99 lbf.in). NOTE : Examine the inlet guide vanes to make sure that they are fully
____ closed. If not fully closed, you must carry out the rigging procedure described in para.(10) thru (17) before you complete the remainder of the installation procedure.
(10)
Remove the IGV actuator (8014KM) (Ref. TASK 49-23-51-000-002).
(11)
Remove the load compressor inlet temperature sensor (8011KM) (Ref. TASK 49-23-15-000-001).
(12)
Install the IGV POSITIONER (T8339043) in the inlet temperature sensor opening. The IGV positioner will engage with the gear teeth if the IGV's are in the fully closed position.
(13)
If the IGV's are not fully closed (positioner tool does not engage), use the FIXTURE - ADJUSTMENT, IGV (834150-2) (17) and loosen the linkage nut (14) then adjust the IGV linkage screw (15) until the IGV positioner tool engages showing that the IGV's are fully closed.
(14)
Tighten the IGV linkage nut (14).
(15)
Remove the IGV positioner tool (16).
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