TM 9-2350-256-34-1
3 Energize the solenoids and open the bleed
valve (37, fig. 3– 10.4). Close the bleed valve when
the fuel flowing from it is free of air bubbles. Place a
graduate under the end of the fuel tube and start
timing the flow. Timing interval must be no less
than one minute.
4 At the end of the timing interval, turn off
the solenoid switch and place the graduate on an ac-
curate balance to measure the contents. The amount
of fuel must be 0.080 ± 0.005 pound per minute for
high heat (both solenoids energized). If the flow is
not within limits, turn the adjusting screw (21, fig.
3-10.4) clockwise to increase the flow or coun-
terclockwise to decrease the flow, and retest.
5 After the high-heat fuel flow has been ad-
justed within limits, seal the adjusting screw with
G.E. Glyptal varnish No. 1201.
6 Disconnect the test lead to the restriction
solenoid lead (No. 5), energize the shut-off solenoid,
and measure the low-heat flow. Low-heat flow rate
must be 0.044 ± 0.003 pound per minute.
a. If the low-heat flow is above 0.047
pound per minute, the orifice plate is defective.
Replace the fuel control valve as an assembly.
b. If the low-heat flow is below 0.041
pound per minute, disassemble the fuel control
valve and clean the orifice plate and control valve
body as described in paragraph 3-34f. Reassemble
the valve and retest.
(2) Burner reassembly (fig. 3-10.5).
(a) Assemble a notched washer (6), slotted
washer (7), and second notched washer (6) over fuel
feed bushing on plate and bushing assembly (4).
Press retaining washer (8) over bushing assembly to
shoulder on bushing, extrusion facing away from
the other washers.
(b) A new fuel vaporizer (9) is supplied with
the ignition wick (5) already inserted in the hold of a
vaporizer with excess length for assembly. Place
pre-assembled wick and vaporizer over the fuel feed
bushing so the wick will lie in the slot. Use a piece of
thin wire to pull the looped end of the wick through
the eye of the wick support. Remove the wire and
hook the wick into the wick support. See figure
3-10.10.
3-18.20
Change 2
