Visual Inspection of the Bearing 5 Oil Nozzle [CFML]

TASK 72-59-80-210-801-A
Visual Inspection of the Bearing 5 Oil Nozzle

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.

1. Reason for the Job
This procedure gives criteria for visual inspection of the bearing 5 oil nozzle.

NOTE: The inspection criteria below are applicable after removal of high metal

NOTE: You can use equivalent alternatives for standard tools, equipment and consumable materials.

2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	1	ACCESS PLATFORM 1M(3 FT)
No specific	AR	WARNING NOTICE(S)

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
437AL, 438AR, 451AL, 452AR
FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
447AL, 448AR, 461AL, 462AR

C. Referenced Information

REFERENCE	DESIGNATION
TASK 71-13-00-010-803-A	Opening of the Fan Cowl Doors
TASK 71-13-00-410-803-A	Closing of the Fan Cowl Doors
TASK 78-11-40-000-801-A	Removal of the Exhaust Front Plug
TASK 78-11-40-400-801-A	Installation of the Exhaust Front Plug
TASK 78-11-41-000-803-A	Removal of the Exhaust Rear Plug
TASK 78-11-41-400-803-A	Installation of the Exhaust Rear Plug
TASK 78-30-00-040-809-A	Deactivation of the Thrust Reverser System for Ground Maintenance
TASK 78-30-00-440-809-A	Reactivation of the Thrust Reverser System after Ground Maintenance
TASK 78-36-00-010-806-A	Opening of the Thrust Reverser Cowl Doors
TASK 78-36-00-410-806-A	Closing of the Thrust Reverser Cowl Doors
Visual Inspection of Bearing 5 Oil Nozzle

3. Job Set-up
Subtask 72-59-80-941-051-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 72-59-80-010-054-A

B. Get Access
(1) Open the fan cowl doors (Ref. AMM TASK 71-13-00-010-803):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
437AL 438AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
447AL 448AR
(2) Put an ACCESS PLATFORM 1M(3 FT) in position.

Subtask 72-59-80-040-052-A

C. Deactivation of the Thrust Reverser System for Maintenance

WARNING: YOU MUST DEACTIVATE THE THRUST REVERSER BEFORE YOU DO WORK ON OR AROUND IT. IF YOU DO NOT, THE THRUST REVERSER CAN OPERATE ACCIDENTALLY AND CAUSE AN INJURY AND/OR DAMAGE.

(1) Do the deactivation of the thrust reverser system for ground maintenance (Ref. AMM TASK 78-30-00-040-809).

Subtask 72-59-80-010-055-A

D. Get Access
(1) Open the thrust reverser cowl-doors (Ref. AMM TASK 78-36-00-010-806):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
451AL 452AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
461AL 462AR
(2) Make sure that the rear plug assembly and the front plug assembly are removed (Ref. AMM TASK 78-11-41-000-803) and (Ref. AMM TASK 78-11-40-000-801).

4. Procedure
Subtask 72-59-80-210-050-A

A. Do a visual inspection of bearing 5 oil nozzle (1) as follows:
(1) Visual inspection of all areas:

INSPECT/CHECK	MAXIMUM SERVICEABLE LIMITS	REMARKS
1.Cracks	Not serviceable
2.Nicks, scratches	Any number up to 0.010 in. (0.25 mm) in depth
3.Dents	Any number up to 0.020 in. (0.51 mm) in depth

(2) Visual inspection of the nipple (2):

INSPECT/CHECK	MAXIMUM SERVICEABLE LIMITS	REMARKS
1.Damaged corners (7)	Any number, if the correct torque can be kept.
2.Damaged thread (6)	Any amount, if the effective threads are not decreased by more than one after chasing.
3.Safetywire hole (8) tear-out	Serviceable, if there is one hole.
4.Circumferential scratches in areas A and C	Any number up to 0.0051 in. (0.13 mm) in depth
5.Circumferential scratches in area B	Any amount if not detected with a 0.0402 in. (1.02 mm) radius scriber
6.Axial scratches in area A and area C	Any number up to 0.0051 in. (0.13 mm) in depth
7.Axial scratches in area B	Not serviceable
8.Nicks, pits, in area C	Any number up to 0.031 in. (0.79 mm) in depth
9.Nicks, pits, in area A and area B	Not serviceable

(3) Visual inspection of nozzles (4):

INSPECT/CHECK	MAXIMUM SERVICEABLE LIMITS	REMARKS
1.Cracks	Not serviceable
2.Nicks, dents, scratches	Not serviceable

(4) Visual inspection of the seal groove (5):

INSPECT/CHECK	MAXIMUM SERVICEABLE LIMITS	REMARKS
1.Cracks	Not serviceable
2.Nicks, dents, scratches	Not serviceable

5. Close-up
Subtask 72-59-80-410-052-A

A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Install the rear plug assembly and the front plug assembly if removed (Ref. AMM TASK 78-11-41-400-803) and (Ref. AMM TASK 78-11-40-400-801).
(3) Close the thrust reverser cowl-doors (Ref. AMM TASK 78-36-00-410-806):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
451AL 452AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
461AL 462AR

Subtask 72-59-80-440-051-A

B. Do the reactivation of the thrust reverser system after ground maintenance (Ref. AMM TASK 78-30-00-440-809).

Subtask 72-59-80-410-054-A

C. Close Access
(1) Close the fan cowl doors (Ref. AMM TASK 71-13-00-410-803):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
437AL 438AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
447AL 448AR
(2) Remove the access platform(s).
(3) Remove the WARNING NOTICE(S).

[Rev.10 from 2021] 2026.04.01 02:54:05 UTC