TM 9-4520-258-14
5-5.
BURNER ASSEMBLY.
This task consists of:
a.
Disassembly
b.
Repair
c.
Assembly
INITIAL SETUP:
Tools:
General Safety Requirements:
Tool Kit, General Mechanics (Item 3, App B)
WARNING
Wrench Set Hex Key (Item 4, App B)
Drycleaning solvent, P-D-680, Type III, used to
Material/Parts:
clean parts, is potentially dangerous to personnel
Preformed Packing (Item 11, App H)
and property. Combustible - do not use near welding
Preformed Packing (Item 30, App H)
areas, near open flames or on hot surfaces. use only
Drycleaning Solvent (Item 1, App E)
with adequate ventilation. Avoid prolonged or
Rags (Item 2, App E)
repeated breathing of vapors. do not smoke while
Prime, Sealing Compound (Item 7, App E)
using it. Use protective creams; wear apron and
Loctite (Item 13, App E)
goggles (or face shield) to protect the skin. Store in
approved metal safety containers.
Equipment Condition:
Burner assembly removed (para 4-33)
a.
Disassembly (Refer to Figure 5-8)
(1)
Remove three setscrews (1).
CAUTION
Petal valve can be damaged by rough handling. Be careful when disassembling the burner
assembly so petal valve is not damaged.
NOTE
When removing the block assembly, the fuel tube, electrodes and tube assembly will also come
out. If the block assembly is difficult to remove, light pressure may be applied to the nozzle.
Resistance is caused by packing around the block assembly.
(2)
Remove block (2) from flange (3). Remove preformed packing (4). Discard packing.
(3)
Remove screw (5) and fire ring (6).
(4)
Remove two set screws (7), two electrodes (8), two preformed packings (9) and two sleeves (10).
Discard packing.
(5)
Remove tube assembly (11).
(6)
Remove set screw (12) from baffle (13).
(7)
Remove set screw (14) and fuel tube (15).
5-16
