TM 5-4520-256-14
3-17.
COMBUSTION CONTROL RELAY (K8) MAINTENANCE-Continued.
b.
Inspection.
(1)
Inspect relay housing for cracks and signs of burning.
(2)
Inspect for loose or missing hardware.
(3)
Inspect wiring for cracked insulation, exposed conductor, and secure mounting.
(4)
Inspect bracket for cracks, dents, and corrosion.
(5)
Inspect connector for loose connections.
c.
Cleaning.
WARNING
Cleaning solvent, Federal specification P-D-680, is toxic and flammable. Use only in a well-
ventilated area. Avoid prolonged breathing of fumes. Keep solvent away from flames. Do not
use in excessive amounts. Avoid skin contact.
(1)
Clean relay and bracket thoroughly with cleaning solvent (item 11, Appendix E).
(2)
Allow to dry completely.
d.
Repair.
(1)
Unplug connector (12) from bracket (1).
(2)
Remove two screws (2), two locknuts (6), and four flat washers (3) and (5).
(3)
Separate connector (4) from bracket (1).
(4)
Remove four self-locking nuts (7), four flat washers (10), and four screws (11).
(5)
Separate relay (9) from bracket (1).
(6)
Tag and remove wires (8) from connector (4) and (12).
(7)
Replace parts as required.
(8)
Reconnect wiring (8) to connector (4) and (12) per tagged identification.
(9)
Place relay (9) into bracket (1). Secure with four screws ( 11), four flat washers (10), and four self-locking
nuts (7).
Change 3 3-44
