TM 5-4520-256-14
3-17.
COMBUSTION CONTROL RELAY (K8) MAINTENANCE.
This task covers:
a.
Removal
b.
Inspection
c.
Cleaning
d.
Repair
e.
Installation
INITIAL SETUP:
Tools Required:
Tool Kit, General Mechanics
Materials Required:
Cleaning Solvent (Item 11, Appendix E)
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.
Equipment Conditions:
Heater unit shut down and cool.
Power cable disconnected from power source.
Access door removed (para 3-10a).
a.
Removal.
(1)
Disconnect connector (6) from relay bracket (5).
(2)
Remove four screws (1), four lockwashers (2), four flat washers (3), and bracket (5) from control panel (4).
(3)
Remove four self-locking nuts (7), four flat washers (9), and four screws (10).
(4)
Separate relay (8) from relay bracket (5).
Change 3 3-42
