C. Expendable Parts
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30 O-ring 79-35-15 01B-030 40 O-ring 79-35-15 01B-040 R 40 O-ring 79-35-15 01B-040A
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D. Referenced Information
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REFERENCE DESIGNATION
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71-00-00-710-006 Minimum Idle Check
71-13-00-010-040 Opening of the Fan Cowl Doors
71-13-00-410-040 Closing of the Fan Cowl Doors
79-35-15-991-300 Fig. 401
3. Job Set-up
__________
Subtask 79-35-15-860-050
A. Aircraft Maintenance Configuration
(1) On the center pedestal, on the ENG panel 115VU, make sure that a warning notice is in position to tell persons not to start the engine.
(2) On the overhead maintenance panel 50VU, make sure that the ON legend of the ENG/FADEC GND PWR/1(2) pushbutton switch is off. Make sure that a warning notice is in position to tell persons not to energize the FADEC 1(2).
Subtask 79-35-15-010-051
B. Make sure that the fan cowl doors are open: (Ref. TASK 71-13-00-010-040) FOR 1000EM1 437AL, 438AR FOR 1000EM2 447AL, 448AR
4. Procedure
_________
(Ref. Fig. 401/TASK 79-35-15-991-300)
Subtask 79-35-15-420-050
A. Installation of the Differential Pressure Switch
R (1) Remove blanking plugs and caps.
R (2) Lubricate new O-ring (30) and O-ring (40) with engine oil (Material No. CP2442) and install them on the differential pressure switch.
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(3) Lubricate the threads of bolts (50) with graphite grease (Material No. CP2101)
(4) Engage the differential pressure switch (20) in the lubrication unit.
(5) Attach the differential pressure switch (20) to the lubrication unit with bolts (50).
(6) TORQUE the bolts (50) to between 35 and 45 lbf.in (0.39 and 0.50 m.daN)
(7) Make sure that the electrical connectors are clean and in the correct condition.
(8) Connect the HJ7 harness connector (10) to the differential pressure switch. Use soft-nose connector pliers only if necessary.
(9) Make sure that the connector is fully engaged and do not move. Subtask 79-35-15-942-050
B. Remove the warning notice(s). Subtask 79-35-15-710-050
C. Do a minimum idle check (Ref. TASK 71-00-00-710-006) and a check for leaks.
5. Close-up
________ Subtask 79-35-15-410-050
A. Close Access
(1) Make sure that the work area is clean and clear of tool(s) and other items.
(2) Close the fan cowl doors: (Ref. TASK 71-13-00-410-040)
FOR 1000EM1
437AL, 438AR
FOR 1000EM2
447AL, 448AR
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