(2)
 Remove the two bolts (1) and the washers (2) from the filter bypass valve (8081KM) (3).

 (3)
 Remove the filter bypass valve (8081KM) (3) from the filter housing (4).

 (4)
 Remove and discard the O-rings (5) and (6).

 (5)
 Put blanking plugs on the disconnected line ends.

 Oil-Filter Bypass Valve Figure 401/TASK 49-91-47-991-001 
R  EFF :  001-003, 051-099, 401-499,  49-91-47 Page 404 Aug 01/05
 CES 

 TASK 49-91-47-400-001
 Installation of the Oil-Filter Bypass Valve (8081KM) (GTCP 36-300)
 1. Reason for the Job
__________________
 Self Explanatory
 2. Job Set-up Information
______________________
 A. Fixtures, Tools, Test and Support Equipment
 -------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific access platform 3.5 m (11 ft. 6 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. 03-002 GB DEF-STAN 91-101
 LUBRICATING OIL TURBINE ENGINE SYNT BASE
 (Ref. 20-31-00) Material No. 19-010 USA AMS 5687
 LOCKWIRE STAINLESS STEEL ANNEALED 0.8MM DIA
 (Ref. 20-31-00)
 C. Expendable Parts
 -------------------------------------------------------------------------------FIG.ITEM |DESIGNATION |IPC-CSN -------------------------------------------------------------------------------
5 o-ring 49-91-41 01 -100 5 o-ring 49-91-41 01A-100 6 o-ring 49-91-41 01 -090 6 o-ring 49-91-41 01A-090

 D. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
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 49-00-00-860-003 APU Start by External Power (GTCP 36-300) 49-00-00-860-004 APU Shutdown by External Power (GTCP 36-300) 52-41-00-010-001 Open the APU Doors for Access 52-41-00-410-001 Close the APU Doors after Access 49-91-47-991-001 Fig. 401
 3. Job Set-up
__________
 Subtask 49-91-47-860-051
 A. 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).

 (4)
 Make sure that ground fire extinguishing equipment is available.

 (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).

 Subtask 49-91-47-865-051
 B. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged 1KD, 2KD  Subtask 49-91-47-010-052

 C. Get Access
 (1)
 Put the access platform in position below the APU access doors 315AL and 316AR.

 (2)
 Open the APU access doors 315AL and 316AR (Ref. TASK 52-41-00-010-001).

 (3)
 Set the LIGHT SW 11LJ to the ON position.

 4. Procedure
_________
 (Ref. Fig. 401/TASK 49-91-47-991-001) Subtask 49-91-47-420-050
 A. Installation of the Oil-Filter Bypass Valve (8081KM)
 (1)
 Apply a thin layer of lubricant OILS (Material No. 03-002) to the new o-ring (5) and the new o-ring (6).

 (2)
 Install the new O-rings (5) and (6) on the oil-filter bypass valve (8081KM) (3).

 (3)
 Remove the blanking plug from the filter housing (4).

 (4)
 Install the oil-filter bypass valve (8081KM) (3) to the filter housing (4).

 (5)
 TORQUE the bolts (1) to between 0.23 and 0.28 m.daN (20.35 and 24.77 lbf.in)

 (6)
 Safety the differential pressure indicator nut to the top bolt (1) with MISCELLANEOUS (Material No. 19-010).

 Subtask 49-91-47-865-052
　
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