Detailed Inspection of the Forward Engine Mount Lugs and Monoball Socket [CFML]

TASK 72-24-00-220-801-A
Detailed Inspection of the Forward Engine Mount Lugs and Monoball Socket

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.

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

1. Reason for the Job
Refer to the MPD TASK: 722401-01
DETAILED INSPECTION OF ENGINE FORWARD MOUNT LUGS AND MONOBALL SOCKET.
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	1	FLASHLIGHT - HIGHPOWER
No specific	1	MIRROR - INSPECTION
No specific	AR	WARNING NOTICE(S)

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.14SBA1)	Textile-Lint free Cotton -

C. Referenced Information

REFERENCE	DESIGNATION
TASK 71-00-51-000-803-A	Removal of the Power Plant with 2D Bootstrap
TASK 71-00-51-400-803-A	Installation of the Power Plant with 2D Bootstrap
TASK 71-21-11-000-802-A	Removal of the Forward Engine Mount
TASK 71-21-11-400-802-A	Installation of the Forward Engine Mount
Forward Engine Mount Lugs of the Fan Hub
Monoball Socket of the Fan Hub

3. Job Set-up
Subtask 72-24-00-941-051-A

A. Safety Precautions
(1) On the center pedestal, on ENG panel 115VU:
(a) Make sure that the ENG/MODE selector switch is in the NORM position.
(b) Make sure that the ENG/MASTER 1(2) control switch was in the OFF position not less than five minutes before you do this procedure.
(c) Put a WARNING NOTICE(S) in position to tell persons not to operate:

The ENG/MODE selector switch
The ENG/MASTER 1(2) control switch.

(2) On the ENG section of maintenance panel 50VU:
(a) Make sure that the ON legend of the FADEC GND PWR/1(2) pushbutton switch is off.
(b) Put a WARNING NOTICE(S) in position to tell persons not to energize FADEC 1(2).

Subtask 72-24-00-020-050-A

B. Removal of Component
(1) Remove the power plant (Ref. AMM TASK 71-00-51-000-803).
(2) Remove the forward engine mount from the engine (Ref. AMM TASK 71-21-11-000-802).

4. Procedure
Subtask 72-24-00-220-050-A

A. Detailed Visual Inspection of the Forward Engine Mount Lugs and the Monoball Socket

NOTE: You can use an MIRROR - INSPECTION and FLASHLIGHT - HIGHPOWER.

(1) Get access to the nozzle 12 o'clock area (engine junction area).
(2) Clean any dirt or unwanted material from the forward engine mount with a Textile-Lint free Cotton - (Material No.14SBA1) .
(3) Do a detailed visual inspection of the forward engine mount lugs (2) and the monoball socket (3). Refer to the table below for the inspection criteria.

INSPECT/CHECK	MAXIMUM SERVICEABLE LIMITS	REMARKS
1.Detailed visual inspection of the forward mount lugs (2) of the fan hub (1) for:
A.Dents, nicks	Not serviceable
B.Scratches	Not serviceable
C.Tears, cracks	Not serviceable
2.Detailed visual inspection of the monoball socket (3) of the fan hub (1) for:
A.Cracks	Not serviceable
B.Damages	Not serviceable
C.Scratches	Not serviceable
D.Corrosion	Not serviceable

5. Close-up
Subtask 72-24-00-410-052-A

A. Close Access
(1) Install the forward engine mount to the engine (Ref. AMM TASK 71-21-11-400-802).
(2) Install the power plant (Ref. AMM TASK 71-00-51-400-803).
(3) Make sure that the work area is clean and clear of tools and other items.
(4) Remove the WARNING NOTICE(S).

[Rev.10 from 2021] 2026.04.01 02:52:33 UTC