TM 10-3510-220-24
2-36. WATER HEATER BURNER HEAD AND NOZZLE ASSEMBLY (CONT)
DISASSEMBLY
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
Remove two spark plugs (12)
with gaskets (13) from nozzle
and electrode holder (27).
Remove nozzle (14) and adapter
(15) from nipple (17). Remove screen
(29) from nozzle (14).
Matchmark position of nipple
(17) and electrode holder (27).
Loosen setscrew (16) an remove
nipple.
Remove elbow (18) from nipple (17).
Remove ignition sight tube (19)
from electrode holder (27).
Remove peep sight cap (20) from
ignition sight tube (19).
Remove peep sight glass (21) and
two gaskets (22).
Remove close nipple (23) from
coupling (24).
Remove coupling (24) from
bushing (28).
Loosen two setscrews (25) and
remove scanner tube (26) from
electrode holder (27).
Remove bushing (28) from scanner
t u b e ( 2 6 ) .
INSPECTION
1.
Inspect electrode holder (27) for breaks, cracks, and distortion and for damaged threads.
Inspect spark plugs (12) for burned spots. Inspect insulation for cracks, breaks, and carbon
lines. Check gaskets (13) for breaks, or distortion.
2.
Inspect nozzle (14) and screen (29) for clogs, cracks, and excessive wear. Inspect for carbon
deposits and damaged threads.
3.
Inspect for broken or cracked sight glass (21), stripped or damaged threads on cap (20), and
damaged gaskets (22). Inspect sight tube (19) for damaged threads.
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