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 WARNING : DO NOT TOUCH THE APU UNTIL IT IS SUFFICIENTLY COOL TO PREVENT BURNS
_______ WHEN YOU DO THE MAINTENANCE TASK(S).
 WARNING : USE THE CORRECT PERSONAL PROTECTION.
_______ OIL CAN HAVE ADDITIVE CALLED TRICRESYL PHOSPHATE IN IT. THIS CHEMICAL IS AN ASPHYXIANT, IT IS POISONOUS AND CAN BE ABSORBED THROUGH THE SKIN. USE CARE WHEN ENGINE OIL IS DRAINED. HOT OIL CAN POSSIBLY CAUSE BAD BURNS.
 1. Reason for the Job
__________________
 Self Explanatory
 2. Job Set-up Information
______________________
 A. Fixtures, Tools, Test and Support Equipment
 -------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific warning notice No specific access platform 2.5 m (8 ft. 2 in.) No specific Torque Wrench : range 36.00 to 220.00 lbf.in
 (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)
 Material No. 03-003  USA MIL-PRF-7808 LUBRICATING OIL TURBINE SYNTHETIC BASE (Ref. 20-31-00)  C. Expendable Parts

 -------------------------------------------------------------------------------FIG.ITEM |DESIGNATION |IPC-CSN -------------------------------------------------------------------------------
O-ring 49-91-04 01 -020
 D. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION
 -------------------------------------------------------------------------------
49-00-00-710-004 Operational Test of the APU (4005KM) (GTCP 36-300)
 49-90-00-600-001 Check Oil Level and Replenish (GTCP 36-300)
 52-41-21-410-001
 49-96-51-991-001 Fig. 401

 3. Job Set-up
__________
 Subtask 49-96-51-860-051
 A. Aircraft Maintenance Configuration
 (1)
 Make sure that the warning notice is in position on the panel 25VU to tell persons not to start the APU.

 (2)
 Make sure that the access platform is in position below the APU access door 316AR.

 (3)
 Make sure that the access doors 315AL, 316AR are open.

 Subtask 49-96-51-865-051
 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 49-96-51-991-001) Subtask 49-96-51-420-050
 A. Installation of the APU Oil Heater
 (1)
 Make sure that the oil heater attachment pad is free from cracks and damage.

 (2)
 Remove the plastic blanking plug from the APU oil heater-flange on the accessory drive gearbox.

 (3)
 Clean the component interface and/or the adjacent area.

 (4)
 Do an inspection of the component interface and/or the adjacent area.

 (5)
 Lubricate the new O-ring (5) with OILS (Material No. 03-002) or OILS (Material No. 03-003).

 (6)
 Install the new O-ring (5) on the APU oil heater (4).

 (7)
 Put the APU oil heater (4) in position and install the washers (1) and the bolts (2).

 (8)
 TORQUE the bolts (2) to 50 lbf.in (0.56 m.daN).

 (9)
 Remove and discard the cable tie which temporarily holds the wiring harness connector (3) P28.

 (10)
 Remove the plastic blanking caps from the disconnected electrical connectors.

 (a)
 Make sure that the electrical connectors are clean and in the correct condition.

 (b)
 Connect the wiring harness connector (3) P28 to the APU oil heater (4).

 (c)
 Tighten the wiring harness connector (3) P28 with your hand. NOTE : Make sure that the color lock indicator is aligned.

 

 (11)
 Fill the APU oil reservoir (Ref. TASK 49-90-00-600-001).

 (12)
 Make sure that the work area is clean and clear of tool(s) and other items.

____ Subtask 49-96-51-865-052

 B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s): 1KD, 2KD, 1KT.
 Subtask 49-96-51-790-050
　
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