Installation of the Master Magnetic Chip Detector [CFMB]

TASK 79-21-50-400-001-A
Installation of the Master Magnetic Chip Detector

WARNING: BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.

WARNING: BE CAREFUL WHEN YOU DO WORK ON THE ENGINE PARTS AFTER THE ENGINE SHUTDOWN. USE APPLICABLE THERMAL GLOVES. THE ENGINE PARTS CAN STAY HOT FOR ONE HOUR AFTER SHUTDOWN AND CAN BURN YOU.

ZONE: 400
FIN: 4007EN ** 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	WARNING NOTICE(S)
No specific	Torque wrench: range to between 53 and 47 lbf.in (0.60 and 0.53 m.daN )

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.CP2101)	graphite grease
(Material No.CP2442)	engine oil

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
400	POWER PLANT, NACELLES AND PYLONS
FOR [1000EM1] (ENGINE-1)
437AL, 438AR
FOR [1000EM2] (ENGINE-2)
447AL, 448AR

D. Referenced Information

REFERENCE	DESIGNATION
TASK 71-00-00-710-006-B	Minimum Idle Check
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
TASK 79-00-00-210-003-A	Visual Inspection of the Oil System
Master Magnetic Chip Detector
General View of the Master Magnetic Chip Detector as Installed on the Lubrication Unit

3. Job Set-up
Subtask 79-21-50-860-050-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 79-21-50-010-051-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 79-21-50-420-050-A ** ON A/C NOT FOR ALL

A. Installation of the Master Magnetic Chip Detector

CAUTION: BE CAREFUL NOT TO CAUSE CHAFING TO THE HOUSING OF THE MASTER MAGNETIC CHIP DETECTOR WITH THE TOOLS.

(1) Remove the blanking caps and plugs from all the open ends, connector and receptacle.
(2) Make sure that the gaskets (30) and (70) are serviceable.
(3) Install the master chip detector (40) on the lubrication unit as follows:
(a) Make sure that the mating faces are clean.
(b) Lubricate the gasket (70) with engine oil (Material No.CP2442) .
(c) Lubricate the threads of the bolts (50) with graphite grease (Material No.CP2101) .
(d) Install the master chip detector (40) with its gasket (70) on the lubrication unit.
(e) Install washers (60) and bolts (50) to attach the master chip detector (40) to the lubrication unit.
(f) TORQUE the bolts (50) to between 53 and 47 lbf.in (0.60 and 0.53 m.daN )

.
(4) Install the hose (10) to the master chip detector (40) as follows:
(a) Make sure that the mating faces are clean.
(b) Lubricate the gasket (30) with engine oil (Material No.CP2442) .
(c) Lubricate the threads of the bolts (20) with graphite grease (Material No.CP2101) .
(d) Install the gasket (30) between the mating faces of the master chip detector (40) and the square flange of the hose (10).
(e) Put the bracket of Item 1 in position over the square flange of the hose (10).
(f) Install the bolts (20) to attach the flange of hose (10) and the bracket of Item 1 to the master chip detector (40).
(g) TORQUE the bolts (20) to between 53 and 47 lbf.in (0.60 and 0.53 m.daN )

.
(5) Connect the connector (80) to the 90-degrees interface connector (Item 2).
(a) Fully tighten the connector (80) by hand.

Subtask 79-21-50-790-050-A ** ON A/C NOT FOR ALL

B. Do a minimum idle check for a minimum of 3 minutes and check for leaks (Ref. AMM TASK 71-00-00-710-006) (Ref. AMM TASK 79-00-00-210-003).

5. Close-up
Subtask 79-21-50-410-050-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 03:39:24 UTC