Installation of the DPM Harness [CFMB]

TASK 79-21-30-400-002-A
Installation of the DPM Harness

FIN: 1000EM1 ** ON A/C NOT FOR ALL
FIN: 1000EM2 ** ON A/C NOT FOR ALL

1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	AR	PLIERS - CONNECTOR, JAW, SOFT
No specific	AR	WARNING NOTICE(S)
No specific	Torque wrench: range to between 55 and 45 lbf.in (0.62 and 0.51 m.daN )
No specific	Torque wrench: range to between 110 and 90 lbf.in (1.24 and 1.02 m.daN )

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.CP2101)	graphite grease
(Material No.CP8001)	lockwire 0.032 in. (0.8 mm) dia.
(Material No.CP8002)	lockwire 0.032 in. (0.8 mm) dia

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
FOR [1000EM1] (ENGINE-1)
437AL, 438AR
FOR [1000EM2] (ENGINE-2)
447AL, 448AR

D. Referenced Information

REFERENCE	DESIGNATION
TASK 71-13-00-010-040-B	Opening of the Fan Cowl Doors
TASK 71-13-00-410-040-B	Closing of the Fan Cowl Doors
Removal/Installation of the DPM Harness

3. Job Set-up
Subtask 79-21-30-860-051-A ** ON A/C NOT FOR ALL

A. Aircraft Maintenance Configuration
(1) On the center pedestal, on the ENG panel 115VU, make sure that a WARNING NOTICE(S) 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(S) is in position to tell persons not to energize the FADEC 1(2).

Subtask 79-21-30-010-054-A ** ON A/C NOT FOR ALL

B. Make sure that the fan cowl doors are open: (Ref. AMM TASK 71-13-00-010-040)
(1) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(2) FOR [1000EM2] (ENGINE-2)
447AL 448AR

4. Procedure
Subtask 79-21-30-420-051-A ** ON A/C NOT FOR ALL

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 PLIERS - CONNECTOR, JAW, SOFT 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)
(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) Rotate clockwise as much as possible the DPM harness receptacle (150) to avoid contact with the fan cowl. See the sheet 3 of the figure.

Removal/Installation of the DPM Harness ** ON A/C NOT FOR ALL

(e) TORQUE the nuts (140) to between 110 and 90 lbf.in (1.24 and 1.02 m.daN )

.
(f) Safety the nut (140) to the bracket (160) with CP8001lockwire 0.032 in. (0.8 mm) dia. or CP8002lockwire 0.032 in. (0.8 mm) dia
(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) bolt (10)	brackets (30)	at the 9 o'clock position on flange E (Detail B)
clamp (50) bolt (40)	brackets (60)	at the 8:30 o'clock position on flange D (Detail C)
clamp (80) bolt (70)	brackets (90)	at the 8 o'clock position on flange D (Detail D)
DPM harness bolt (70)	clips (100) and (120) on brackets (110) and (130)	at the 8 o'clock position on flanges 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 55 and 45 lbf.in (0.62 and 0.51 m.daN )

(9) Connect the magnetic chip detector harness to the DPM harness receptacle (150). Use PLIERS - CONNECTOR, JAW, SOFT only if necessary.

5. Close-up
Subtask 79-21-30-410-052-A ** ON A/C NOT FOR ALL

A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Close the fan cowl doors: (Ref. AMM TASK 71-13-00-410-040)
(a) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(b) FOR [1000EM2] (ENGINE-2)
447AL 448AR
(3) Remove the WARNING NOTICE(S).

[Rev.10 from 2021] 2026.04.01 13:05:49 UTC