Replacement of the Ceramic Insulator Sleeve [CFMI]

TASK 74-21-20-300-002-A
Replacement of the Ceramic Insulator Sleeve

1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Consumable Materials

REFERENCE	DESIGNATION
(Material No.CP1039)	acetone
(Material No.CP2011)	stoddard solvent
(Material No.CP2559)	ardrox 552
(Material No.CP2560)	turco ind 79
(Material No.CP2566)	mag-chem teksol
(Material No.CP2584)	degreasol 99 R
(Material No.CP2656)	mag-chem skysol
(Material No.14SBA1)	Textile-Lint free Cotton -

B. Expendable Parts

FIG.ITEM	DESIGNATION	IPC-CSN
10	WHITE CHAMFERED SILICONE SEAL	AIPC 74-21-20-01-060
30	CAGED SPRING	AIPC 74-21-20-01-120
20	RETAINING RING	AIPC 74-21-20-01-130
40	CERAMIC INSULATOR SLEEVE	AIPC 74-21-20-01-140

C. Referenced Information

REFERENCE	DESIGNATION
TASK 74-21-20-000-001-A	Removal of the Left Ignition Lead
TASK 74-21-20-400-001-A	Installation of the Left Ignition Lead
Replacement of the Ceramic Insulator Sleeve

3. Job Set-up
Subtask 74-21-20-020-052-A ** ON A/C NOT FOR ALL

A. Removed the ignition lead (Ref. AMM TASK 74-21-20-000-001)

4. Procedure
Subtask 74-21-20-350-051-A ** ON A/C NOT FOR ALL

A. Disassemble the Ignition Lead

PRE SB 74-003
(1) Remove and discard the white chamfered silicone seal (10).
(2) Remove the caged spring assembly (30).
(3) Remove and discard the retaining ring (20).
(4) Remove and discard the ceramic insulator sleeve (40).
(5) Replace the ignition lead if the insulation has carbon tracks and arcing damage.
POST SB 74-003
(6) Remove and discard the blue symmetrical silicone seal (10).
(7) Remove and discard the retaining ring (20).
(8) Remove and discard the ceramic insulator sleeve (40).
(9) Replace the ignition lead if the insulation has carbon tracks and arcing damage.
END OF SB 74-003

Subtask 74-21-20-160-051-A ** ON A/C NOT FOR ALL

B. Clean all of the ignition lead components with a Textile-Lint free Cotton - (Material No.14SBA1) that is moist with stoddard solvent (Material No.CP2011) or acetone (Material No.CP1039) or ardrox 552 (Material No.CP2559) or turco ind 79 (Material No.CP2560) or mag-chem teksol (Material No.CP2566) or degreasol 99 R (Material No.CP2584) or mag-chem skysol (Material No.CP2656) .

NOTE: The connector and all parts of the ignition lead must be clean.

Subtask 74-21-20-350-052-A ** ON A/C NOT FOR ALL

C. Assemble the Ignition Lead

CAUTION: DO NOT APPLY GREASE OR ANY LUBRICANT TO THE THREADS OF THE CONNECTOR ON THE IGNITION LEAD. GREASE AND LUBRICANTS WILL CAUSE DAMAGE TO THE IGNITION LEAD AND THE SPARK IGNITER.

(1) Install the new AIPC 74-21-20-01-140 CERAMIC INSULATOR SLEEVE (40).
(2) Install the new AIPC 74-21-20-01-130 RETAINING RING (20).

PRE SB 74-003
(3) Install the AIPC 74-21-20-01-120 CAGED SPRING (30) to the ignition lead. Make sure that the large shoulder end of the caged spring assembly (30) is at the contact end of the ignition lead.
(4) Install the new AIPC 74-21-20-01-060 WHITE CHAMFERED SILICONE SEAL (10) to the ignition lead. The small diameter collar of the white chamfered silicone seal (10) must be put into the large collar of the caged spring assembly (30).
POST SB 74-003
(5) Install the new AIPC 74-21-20-01-060 WHITE CHAMFERED SILICONE SEAL (10) to the ignition lead.
END OF SB 74-003

5. Close-up
Subtask 74-21-20-420-052-A ** ON A/C NOT FOR ALL

A. Install the ignition lead (Ref. AMM TASK 74-21-20-400-001)

[Rev.10 from 2021] 2026.04.01 03:07:08 UTC