TEST OR INSPECTION
Step 2. Check fuel level.
If fuel level is low, fill the fuel supply drum.
Step 3. Check for water in fuel by draining some fuel and checking for bubbles.
Drain and refill fuel supply drum if water is evidenced.
5. BURNER SMOKES
Step 1. Check the air shutter to see if the vent holes are blocked.
Adjust the shutter by depresaing the pin and spring and moving the shutter up or down until a near clear
smoke emits from the exhaust duct, approximately of total opening.
Step 2. Check the fuel pressure
for being too high
low. With the fuel pressure control
valve (fig. 2-2, sheet
1 of 2) turned
counterclockwise (shut) and the burner control valve clockwise (shut), the gage should register 100 pounds per square
inch (7.03 kg per sq cm).
Adjust the fuel pressure as follows:
Adjustment must be made with the fuel pump operating.
a. Remove the adjusting screw end cap from the side
of the pump (fig. 3-4).
b. Turn the pressure regulating setscrew clockwise to increase the pressure, and turn it counterclockwise
to decrease the pressure on the pump.
Narrow tip screwdriver must be used to adjust pressure. If a wide tip screwdriver is forced into screwdriver slot, damage
will occur to the pressure adjusting screw.
c. Replace the adjusting screw end cap on the pump.
TS 3510 -208-12/3-4
Figure 3-4. Fuel pump adjustment,