ARMY TM 9-2805-257-14
AIR FORCE TO 38G2-103-2
NAVY NAVFAC P-8-612-14E
5-20. Coil.
This task covers:
a. Removal
b. Test
c. Installation.
INITIAL SETUP
Tools
Equipment Condition
General Mechanics Tool Kit (Item 1, Appendix B)
Flywheel removed (para.
Multimeter (NSN 6625-01-139-2512)
(Item 2, Appendix B)
4-38).
a. Removal. (figure 5-21)
WARNING
Use extreme care when removing coil clamps. Flying clamps can cause severe eye
injury, cover work area with rag or hand when removing clamps.
NOTE
Make note of coil leads placement before removing coil.
Engines with breakerless ignition system have only one coil.
(1) Remove two coil clamps (1) securing coil (2) and remove.
(2) Tag and disconnect coil leads.
(1) Perform resistance test between leads of coil.
(2) Resistance for coil in breakerless ignition system should be 320 ± 20 ohms.
(3) Resistance of coils for breaker point ignition system areas follows:
Primary windings
Secondary windings
Manufacturer
(ohms)
(ohms)
Bendix Corp.
0.512 ± 0.050
3,300 ± 400
Colt Industries
0.370 ± 0.025
8,500 ± 700
Motor Parts. Inc.
0.370 ± 0.025
8,500 ± 700
(4) if the measured resistance does not match specified resistance then replace coil.
5-46
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