Replacement of the Crimped Self-Locking Nuts on the Spinner Rear Cone [CFMB]

TASK 72-21-00-300-001-A
Replacement of the Crimped Self-Locking Nuts on the Spinner Rear Cone

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

B. Referenced Information

REFERENCE	DESIGNATION
TASK 72-21-00-000-005-A	Removal of the Spinner Front Cone
TASK 72-21-00-000-006-A	Removal of the Spinner Rear Cone
TASK 72-21-00-400-005-A	Installation of the Spinner Front Cone
TASK 72-21-00-400-006-A	Installation of the Spinner Rear Cone
SPM 704251350018

3. Job Set-up
Subtask 72-21-00-941-071-A ** ON A/C NOT FOR ALL

A. Safety Precautions
(1) On the center pedestal, on the ENG panel 115VU:
(a) Put a WARNING NOTICE(S) to tell persons not to start the engine.
(2) Make sure that the engine 1(2) shutdown occurred not less than 5 minutes before you do this procedure.
(3) On the overhead maintenance panel 50VU:
(a) Make sure that the ON legend of the ENG/FADEC GND PWR/1(2) pushbutton switch is off.
(b) Put a WARNING NOTICE(S) to tell persons not to energize the FADEC 1(2).
(4) Put an ACCESS PLATFORM 1M(3 FT) in position.

4. Procedure
Subtask 72-21-00-020-067-A ** ON A/C NOT FOR ALL

A. Removal of the defective cimpred Nut(s).
(1) Remove the spinner front cone (Ref. AMM TASK 72-21-00-000-005)
(2) If necessary, remove the spinner rear cone (Ref. AMM TASK 72-21-00-000-006)
(3) Remove the defective crimped self-locking nut(s) from the spinner rear cone. SPM 704251350018

Subtask 72-21-00-420-070-A ** ON A/C NOT FOR ALL

B. Crimping of the New Self-Locking Nuts.

CAUTION: BE CAREFUL NOT TO CAUSE DAMAGE TO THE SURFACE PROTECTION AROUND THE NUTS DURING NUT INSTALLATION.

(1) Crimp the new self-locking nut(s). SPM 704251350018

NOTE: No radial or end play is permitted in the installation of the crimped self-locking nuts type B.

(2) Install the spinner rear cone. (Ref. AMM TASK 72-21-00-400-006)
(3) Install the spinner front cone. (Ref. AMM TASK 72-21-00-400-005)

5. Close-up
Subtask 72-21-00-942-065-A ** ON A/C NOT FOR ALL

A. Close Access
(1) Remove the access platform(s).
(2) Remove the WARNING NOTICE(S).

[Rev.10 from 2021] 2026.04.01 02:41:19 UTC