(2) Continue to polish the igniter contact until the burns and pits are removed.
Subtask 74-21-20-220-051
B. Measure the dimension between the contact face and the retaining ring groove. Replace the ignition lead if this dimension is less than 0.055 in. (1.397 mm) thick.
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Repair Igniter Contact
Figure 801/TASK 74-21-20-991-303
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Subtask 74-21-20-160-053
C. Clean the ceramic insulator sleeve and contact with a lint-free cloth R that is moist with trichloroethylene (Material No. CP1008) or stoddard R solvent (Material No. CP2011) or acetone (Material No. CP1039) or ardrox R 552 (Material No. CP2559) or turco ind 79 (Material No. CP2560) or mag-R chem teksol (Material No. CP2566) or degreasol 99 R (Material No. CP2584) R or mag-chem skysol (Material No. CP2656) .
5. Close-up
________
Subtask 74-21-20-420-055
A. Install the ignition lead (Ref. TASK 74-21-20-400-002).
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TASK 74-21-20-300-005 Replacement of the Ceramic Insulator Sleeve
1. Reason for the Job
__________________
Self Explanatory
2. Job Set-up Information
______________________
A. Fixtures, Tools, Test and Support Equipment
-------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific lint-free cloth
B. Consumable Materials
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
Material No. CP1008
R R Material No. Material No. CP1039 CP2011
R R R R R R R R R R Material No. Material No. Material No. Material No. Material No. CP2559 CP2560 CP2566 CP2584 CP2656
*
trichloroethylene (Ref. 70-30-00)
*
acetone (Ref. 70-30-00)
*
stoddard solvent (Ref. 70-30-00)
*
ardrox 552 (Ref. 70-30-00)
*
turco ind 79 (Ref. 70-30-00)
*
mag-chem teksol (Ref. 70-30-00)
*
degreasol 99 R (Ref. 70-30-00)
*
mag-chem skysol (Ref. 70-30-00)
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C. Expendable Parts
-------------------------------------------------------------------------------FIG.ITEM |DESIGNATION |IPC-CSN -------------------------------------------------------------------------------
10 white chamfered silicone seal 74-21-20 01 -180 10 white chamfered silicone seal 74-21-20 01 -180A 10 white chamfered silicone seal 74-21-20 01A-180 20 retaining ring 74-21-20 01 -200 20 retaining ring 74-21-20 01A-200 30 caged spring assembly 74-21-20 01 -190 30 caged spring assembly 74-21-20 01 -190A 30 caged spring assembly 74-21-20 01A-190 40 ceramic insulator sleeve 74-21-20 01 -210 40 ceramic insulator sleeve 74-21-20 01 -210A 40 ceramic insulator sleeve 74-21-20 01A-210
D. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
74-21-20-000-002 Removal of the Left Ignition Lead 74-21-20-400-002 Installation of the Left Ignition Lead 74-21-20-991-304 Fig. 802
3. Job Set-up
__________
Subtask 74-21-20-020-056
A. Remove the ignition lead (Ref. TASK 74-21-20-000-002).
4. Procedure
_________
(Ref. Fig. 802/TASK 74-21-20-991-304)
Subtask 74-21-20-350-055
A. Disassemble the Ignition Lead
PRE SB 74-002
(1) Remove and discard the white chamfered silicone seal (10).
(2) Remove the caged spring assembly (30).
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Replacement of the Ceramic Insulator Sleeve Figure 802/TASK 74-21-20-991-304
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