TASK 79-21-30-400-002
Installation of the DPM Harness
1. Reason for the Job
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Self Explanatory
2. Job Set-up Information
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A. Fixtures, Tools, Test and Support Equipment
-------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific soft-nose connector pliers
No specific warning notice
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. CP2101 USA MIL-T-5544
graphite grease (Ref. 70-30-00)
Material No. CP8001 *
lockwire 0.032 in. (0.8 mm) DIA (Ref. 70-30-00)
Material No. CP8002 *
lockwire 0.032 in. (0.8 mm) DIA (Ref. 70-30-00)
C. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
71-13-00-010-040 Opening of the Fan Cowl Doors 71-13-00-410-040 Closing of the Fan Cowl Doors R 79-21-30-991-302 Fig. 403
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3. Job Set-up
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Subtask 79-21-30-860-051
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 79-21-30-010-054
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
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R (Ref. Fig. 403/TASK 79-21-30-991-302)
Subtask 79-21-30-420-051
A. Installation of the DPM harness
(1) Remove the blanking caps and plugs from the connectors and the receptacles.
(2) Set the DPM harness in position on the fan frame.
(3) Connect the DPM harness to the visual indicator. Use soft-nose connector pliers only if necessary.
(4) Make sure that the connector is fully engaged and does not move.
(5) Install the DPM harness receptacle (150) as follows: (detail G).
(a) Lubricate the threads of the receptacle with graphite grease (Material No. CP2101)
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(b) Put the receptacle (150) in position through the bracket (160).
(c) Attach the receptacle (150) to the bracket (160) with the nut (140).
(d) TORQUE the nuts (140) to between 90 and 110 lbf.in (1.01 and 1.24 m.daN).
(e) Safety the nut (140) to the bracket (160) with lockwire 0.032 in.
(0.8 mm) DIA (Material No. CP8001) or lockwire 0.032 in. (0.8 mm) DIA (Material No. CP8002)
(6) Lubricate the threads of bolts with graphite grease (Material No. CP2101) before installation.
(7) Attach the DPM harness as follows:
-------------------------------------------------------------------------------INSTALL ON NOTE -------------------------------------------------------------------------------clamp (20) at the 9 o'clock bolt (10) brackets (30) position on flange
E (detail B)
clamp (50) at the 8:30 o'clock bolt (40) brackets (60) position on flange D (detail C)
clamp (80) at the 8 o'clock bolt (70) brackets (90) position on flange D (detail D)
DPM harness clips (100) and (120) at the 8 o'clock bolt (70) on brackets (110) position on flanges and (130) C and D (details E and F)
(8) Make sure that the harness is not stressed and TORQUE the bolts (10),
(40) and (70) to between 45 and 55 lbf.in (0.50 and 0.62 m.daN)
(9) Connect the magnetic chip detector harness to the DPM harness receptacle (150). Use soft-nose connector pliers only if necessary.
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