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11
11
SERVICE PROCEDURES
Continued
Figure 18 - Removing Air and Fuel Line Hoses (Model GK30 Only)
Figure 19 - Removing Nozzle/Adapter Assembly
NOZZLE ASSEMBLY
1. Remove upper shell (see page 8).
2. Remove fan (see page 13).
3. Remove fuel and air line hoses from nozzle assembly (see Fig-
ure 17 or 18).
4. Turn nozzle assembly 1/4 turn to left and pull toward motor to
remove (see Figure 19).
5. Place plastic hex-body into vise and lightly tighten.
6. Carefully remove nozzle from the nozzle adapter using 5/8"
socket wrench (see Figure 20).
7. Blow compressed air through face of nozzle. This will free
any dirt in nozzle area.
8. Inspect nozzle seal for damage.
9. Replace nozzle into nozzle adapter until nozzle seats. Tighten
1/3 turn more using 5/8" socket wrench 4.5 to 5.1 N-m (40 to
45 in-lbs). See Figure 20.
10. Attach nozzle assembly to burner strap.
11. Attach fuel and airline hoses to nozzle assembly. See Fuel and
Airline Replacement and Proper Routing, page 12.
12. Replace fan (see page 13).
13. Replace fan guard and upper shell (see page 8).
Nozzle/Adapter
Assembly
Combustion
Chamber
Fuel Line
Hose
Nozzle/
Adapter
Assembly
Combustion
Chamber
Air Line Hose
Photocell Bracket
Figure 17 - Removing Air and Fuel Line Hoses (Model GK20 Only)
Fuel Line Hose
Nozzle/Adapter
Assembly
Combustion
Chamber
Photocell
Bracket
Air Line
Hose
Nozzle
Adapter
Bracket
Nozzle Adapter
Bracket
Figure 20 - Nozzle and Nozzle Adapter
Nozzle
Face
Nozzle
Nozzle Seal
Nozzle Adapter
Air Line
Fitting
Fuel Line
Fitting
SERVICE PROCEDURES