Dayton 3VG79 - Manual (Page 8)

Dayton Operating Instructions and Parts Manual
8
Dayton Portable
Oil-Fired Heaters ®
3VG79
Air Line Hose
Screw
Combustion
Chamber
Burner Head
Spark Plug
Wire
Spark
Plug
Fuel Line Hose
NOZZLE
1. Remove upper shell (See page 6).
2. Remove fan (See page 6).
3. Remove fuel and air line hoses from
burner head.
4. Remove spark plug wire from spark
plug.
5. Remove spark plug from burner head
using 13/16" open-end wrench.
6. Remove three screws using 5/16" nut-
driver and remove burner head from
combustion chamber.
Figure 16 - Removing Burner Head
Nozzle
Face
Nozzle Seal
Nozzle
Burner
Head
Fuel Line
Fitting
Air Line
Fitting
Fan Guard
Filter End Cover
Air Intake Filter
Pump Plate
Blade
Air Output Filter
Rotor
Insert
7. Place burner head into vise and lightly
tighten.
8. Carefully remove nozzle from burner
head using 5/8" socket wrench (See
Figure 17).
PUMP ROTOR
(Procedure if rotor is binding)
1. Remove upper shell (See page 6).
2. Remove filter end cover screws using
5/16" nut-driver.
3. Remove filter end cover and air filters.
4. Remove pump plate screws using 5/16"
nut-driver.
9. Blow compressed air through face of
nozzle. This will free any dirt in nozzle
area.
10. Inspect nozzle seal for damage.
11. Replace nozzle into burner head and
tighten firmly (80-110 inch-pounds).
12. Attach burner head to combustion
chamber.
13. Install spark plug in burner head.
14. Attach spark plug wire to spark plug.
15. Attach fuel and airline hoses to burner
head.
16. Replace fan (See page 6).
17. Replace fan guard and upper shell.
Figure 17 - Removing Nozzle
Figure 18 - Rotor Location
6. Install spark plug and wave spring
washer in burner head. Torque 40 to 60
inch-pounds. Then adjust (if necessary)
to bring side electrode into the accept-
able range (See Figure 15).
270˚
ACCEPTABLE RANGE
FOR SIDE ELECTRODE
7. Attach spark plug wire to spark plug.
8. Replace fan (See page 6).
9. Replace fan guard and upper shell.
Figure 15 - Acceptable Range For Side
Electrode
Side
Electrode
270 °
Acceptable
Range For
Side
Electrode
Maintenance (Continued)
Wave
Spring
Washer