TM 10-3510-209-24
2-34. WATER HEATER BURNER HEAD AND NOZZLE ASSEMBLY (CONT)
DISASSEMBLY
1.
Remove two spark plugs (12)with gaskets (13)
from nozzle and electrode holder (27).
2.
Remove nozzle (14) and adapter (15) from
nipple (17).
3.
Matchmark position of nipple (17) and electrode
holder (27). Loosen setscrew (16) and remove nipple.
4.
Remove elbow (18) from nipple (17).
5.
Remove ignition sight tube (19) from electrode
holder (27).
6.
Remove peep sight cap (20) from ignition sight
tube (19).
7.
Remove peep sight glass (21) and two gaskets
(22).
8.
Remove close nipple (23) from coupling (24).
9.
Remove coupling (24) from bushing (28).
10.
Loosen two setscrews (25) and remove scanner tube (26) from electrode holder (27).
11.
Remove bushing (28) from scanner tube (26).
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) 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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