(0.40 to 2.60 m.daN)
B.
Consumable Materials
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
Material No. 03-002 GB DEF-STAN 91-101
LUBRICATING OIL TURBINE ENGINE SYNT BASE
(Ref. 20-31-00)
C. Expendable Parts
-------------------------------------------------------------------------------FIG.ITEM |DESIGNATION |IPC-CSN -------------------------------------------------------------------------------
3 packing 49-21-04 50A-135 15 packing 49-21-04 51A-155
D. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
24-41-00-861-002 Energize the Aircraft Electrical Circuits from the External Power 24-41-00-862-002 De-energize the Aircraft Electrical Circuits Supplied from the External Power 29-00-00-864-001 Put the Related Hydraulic System in the Depressurized Configuration before Maintenance Action 29-14-00-614-002 Pressurization of the Hydraulic Reservoirs through
the Ground Connector 49-00-00-860-005 APU Start by External Power (APS 3200) 49-00-00-860-006 APU Shutdown by External Power (APS 3200) 49-90-00-600-004 Check Oil Level and Replenish (APS 3200) 52-41-00-010-001 Open the APU Doors for Access 52-41-00-410-001 Close the APU Doors after Access 49-91-44-991-003 Fig. 401
3. Job Set-up
__________
Subtask 49-91-44-860-051
A. Aircraft Maintenance Configuration
(1)
Make sure that the aircraft electrical circuits are energized (Ref. TASK 24-41-00-861-002).
(2)
On the panel 25VU, make sure that the APU MASTER SW pushbutton switch is off.
(3)
Make sure that there is a warning notice in the cockpit to tell persons not to start the APU.
(4)
Make sure that hydraulic systems are depressurized
(Ref. TASK 29-00-00-864-001).
(5)
Make sure that the access platform is in position below the APU compartment.
(6)
Make sure that the APU access doors are open (Ref. TASK 52-41-00-010-001).
(7)
Make sure that the LIGHT control switch 11LJ is set to the on position.
Subtask 49-91-44-865-064
B. 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
4. Procedure
_________
(Ref. Fig. 401/TASK 49-91-44-991-003) Subtask 49-91-44-420-052
A. Installation of the Oil Cooler (P/N 4950882; M4950242)
(1)
Make sure that the parts retained from the removed component are clean and in the correct condition.
(2)
Do an inspection of the component interface and/or the adjacent area.
(3)
Apply OILS (Material No. 03-002) to the new packing (3) and packing (15).
(4)
Visually inspect the tubes (2) and (14) for evidence of aluminuim deposits, rough surfaces or deformation. Replace the tube(s) if defects are observed.
(5)
Visually inspect the threads on the tube mount boss studs for, chipping, galling or deformation. Replace the oil cooler if defects are found.
(6)
Put the new packing (3) and (15) on the tubes (2) and (14).
(7)
Remove the protective covers from the cooling fan outlet duct (16) and the new oil cooler (5).
(8)
Position the band clamp (4) on cooling fan outlet duct (16).
(9)
Position the oil cooler (5) on the mount brackets with the top flange located in the cooling fan outlet duct (16). Loosely install the four mount bolts (6).
NOTE : Do not tighten the bolts (6) at this time.
____
(10)
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