R EFF : 001-049, 101-105, 107-107, 151-199, 49-96-51Page 405 201-210, Config-2 Aug 01/05
CES
D. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
24-42-00-861-001 Energize the Ground Service Network from the External Power 24-42-00-862-001 De-energize the Ground Service Network 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 49-00-00-710-010 Operational Test of the APU (131-9(A)) 49-90-00-600-007 Check and Replenish Oil Level (131-9(A)) 52-41-00-410-001 Close the APU Doors after Access 49-96-51-991-002 Fig. 401
3. Job Set-up
__________
Subtask 49-96-51-860-053
A. Aircraft Maintenance Configuration
(1)
Energize the ground service network
(Ref. TASK 24-42-00-861-001).
(2)
Make sure that the APU MASTER SW p/bsw on the panel 25VU is OFF.
(3)
Make sure that the warning notice is in position on the panel 25VU 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 access door 316AR.
(6)
Make sure that the access doors 315AL, 316AR are open.
(7)
Make sure that the LIGHT SW 11LJ is set to the ON position.
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CES Subtask 49-96-51-865-057
B. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged
-------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------
121VU APU/OIL/HTR/SPLY 1KT K41 121VU APU/APU/CTL 2KD L42 121VU APU/ECB/SPLY 1KD L41
4. Procedure
_________
(Ref. Fig. 401/TASK 49-96-51-991-002) Subtask 49-96-51-420-051
A. Installation of the Oil Heater
(1)
Remove the blanking plug from the gearbox.
(2)
Clean the component interface and/or the adjacent area.
(3)
Do an inspection of the component interface and/or the adjacent area.
(4)
Lubricate the new O-ring (5) with OILS (Material No. 03-002).
(5)
Install the new O-ring (5) on the heater (3).
(6)
Put the heater (3) in position in the gearbox.
(7)
Install the washers (2) and the bolts (1).
(8)
TORQUE the bolts (1) to 50 lbf.in (0.56 m.daN).
(9)
Remove the blanking caps from the electrical connectors.
(10)
Connect the electrical connector (4) to the heater (3).
(11)
Refill the gearbox with oil (Ref. TASK 49-90-00-600-007).
(12)
Make sure that the work area is clean and clear of tool(s) and other items.
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CES Subtask 49-96-51-865-058
B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s): 1KD, 2KD, 1KT
Subtask 49-96-51-790-051
C. Test
(1)
Operate the APU for 5 minutes (Ref. TASK 49-00-00-710-010).
(2)
Examine the heater (3) for leaks.
NOTE : Leaks are not permitted.
____
________
5. Close-up
Subtask 49-96-51-410-053
A. Close Access
(1)
Make sure that the work area is clean and clear of tool(s) and other items.
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