TM 9-2320-266-34
24-10. Mixing Chamber Air Valve.
b. Repair.
a. Removal.
(1) Disassemble the valve.
(1) Loosen heater cover wing screw to open cover.
(2) Clean all parts.
(2) Remove fuel lines connector fittings on mixing
(3) Replace gaskets if damaged or worn.
chamber.
(4) Reassemble the valve.
(3) Remove preheating plug.
c. Installation.
(4) Remove diaphragm valve.
(1) Place spring and gasket in tube port.
(5) Remove lower valve and gasket.
(2) Install control air shut-off valve. Check proper
function of valve by pressing against valve pin. Pin must
b. Repair.
bounce back.
(1) Disassemble valve by removing locking nut and
(3) Install quick coupling assembly.
upper valve which is under spring tension.
(2) Clean all components.
24-13. Air Pump Diaphragm Assembly.
(3) Inspect for damaged threads, and worn or dam-
a. Removal.
aged gaskets. Replace as necessary.
(1) Loosen heater cover wing screw to open cover.
(4) Reassemble air valve.
(2) Disconnect electrical leads from preheating plug,
c. Installation.
condenser, and housing.
(1) Install lower valve and gasket at mixing chamber
(3) Disconnect hose from mixing chamber air valve.
port.
(4) Remove heater cover assembly, air pump dia-
(2) Install diaphragm valve.
phragm and handle assembly as a unit.
(3) Install preheating plug.
(5) Remove mounting hardware of air pump dia-
(4) Connect fuel lines.
phragm assembly.
(5) Close heater cover and secure by tightening wing
b. Repair.
screw.
(1) Disassemble diaphragm,
24-11. Carburetor Air Valve.
(2) Inspect all parts for damage and wear. Replace
components as necessary.
a. Removal.
(3) Clean all components.
(1) Loosen heater cover wing screw to open cover.
(4) Reassemble diaphragm.
(2) Remove hose from top of air valve.
c. Installation.
(3) Remove lower valve and gasket.
(1) Secure air pump diaphragm assembly with
b. Repair.
mounting hardware.
(1) Disassemble air valve by removing lock nut and
(2) Install heater cover assembly, air pump dia-
upper valve which is under spring tension.
phragm and handle assembly as a unit.
(2) Clean all components.
(3) Connect hose to mixing chamber air valve.
(3) Inspect for darnaged threads, and worn or dam-
(4) Connect electrical leads to preheating plug, con-
aged gaskets. Replace as necessary.
denser, and housing.
(4) Reassemble air valve.
(5) Close heater cover and tighten wing screw.
c. Installation.
(1) Install lower valve and gasket.
24-14. Regulator Valve Assembly.
(2) Install hose to top of air valve.
a. Removal.
(3) Close heater cover and secure by tightening wing
(1) Insure that regulator valve is closed by turning
screw.
fuel and air mix knob fully clockwise.
24-12. Control Air Shut-off Valve.
(2) Loosen heater cover wing screw to open cover.
a. Removal.
(3) Push joint shaft up into recessed bottom of fuel
and air mix knob, to remove joint shaft from valve slot.
(1) Remove quick coupling assembly.
(4) Remove hollow screw with gaskets that secures
(2) Remove air shut-off valve with gasket and spring
fuel suction hose assembly to fuel tank.
from tube port.
(5) Remove nut at lower end of regulator valve.
Change 5
24-7
