TM 9-4520-258-14
4-33. BURNER ASSEMBLY.
This task consists of:
a. Removal
b. Inspection
c. Repair
d. Installation
INITIAL SETUP:
Tools:
General Safety Requirements:
Tool Kit, General Mechanics (Item 1, App B)
WARNING
Gasket Punch (Item 2, App B)
Shears (Item 2, App B)
Fuels are toxic and flammable. Do not get on person
or clothing. Do not use near open flame. Area
Equipment Condition:
should be well ventilated.
Unit disconnected from power source (para 2-8)
Supply duct cover removed (para 4-22)
Fuels Flammable/No Smoking.
Supply outlet screen removed (para 4-23)
Contact with hot components can cause burns.
Allow unit to cool down before attempting
Material/Parts:
service/inspection/maintenance activity.
Gasket (Item 59, App F)
Cleaning Solvent (Item 1, App E)
Lockwashers (Item 12, App H)
Rags (Item 2, App E)
NOTE
Disassemble only to the level required to make repairs.
a.
Removal (Refer to Figure 4-59)
(1)
Remove eight nuts (1), eight lockwashers (2), eight flat washers (3), thermostat bracket
(4) and cover plate (5). Discard lockwashers.
(2)
Remove gasket (6) from cover plate (5). Discard gasket.
(3)
Disconnect two high tension leads (7) from two electrodes on burner assembly (8).
WARNING
Fuels are toxic and flammable. Do not get on person or
clothing. Do not use near open lame. Area should be
well ventilated.
Fuels Flammable/No Smoking.
(4)
Disconnect fuel line (9).
(5)
Loosen clamp (10) and remove flame sensor (11).
(6)
Remove six nuts (12), six lockwashers (13) and six flat washers (14). Discard lockwashers.
(7)
Remove burner assembly (8) and gasket (15).
(8)
Remove three set screws (16)and baffle (17).
4-152
