Section VI. CRANE ENGINE FUEL SYSTEM
90. General
The fuel system consists of a 50-gallon fuel tank, fuel
pump, carburetor, air cleaner, lines and fittings. A fuel
line with shutoff cock connects the tank to a diaphragm-
type fuel pump, mounted on the right-rear side of the
engine block. A fuel line connects to an updraft-type
carburetor, mounted on the right side of the engine. The
oil-bath type air cleaner is connected to the bottom of
the carburetor with a hose. During operation, clean air
passes from the air cleaner to the carburetor. At the
carburetor the air picks up a spray of gasoline and the
gasoline-air mixture is drawn into the cylinders where it
is ignited by the spark plugs.
91. Engine Air Cleaner
a. Removal and Installation. Remove and install
the air cleaner as shown in figure 35.
b. Disassembly. Disassemble the air cleaner as
illustrated in figure 36.
c. Cleaning, Inspection, and Repair.
(1) Clean the air cleaner as instructed in
1
Cup assembly
4
Clamp assembly
2
Inner cup
5
Mounting bracket
(2) Inspect all parts for fractures and other
3
Body assembly
damage.
Figure 36. Crane engine air cleaner, exploded view.
(3) Repair or replace damaged parts as
necessary.
d. Reassembly.
Reassemble the air cleaner as
illustrated on figure 36.
92. Fuel Tank, Lines, and Fittings
a. Service. Service the crane engine fuel tank as
instructed in figure 27.
b. Removal and Installation. Remove and install the
fuel tank, lines and fittings as instructed in figure 37.
c. Cleaning, Inspection, and Repair.
(1) Clean all parts with an approved cleaning
solvent.
(2) Inspect all parts for defective condition.
(3) Repair or replace damaged parts as
necessary. Replace all gaskets.
Figure 35. Crane engine air cleaner, removal and installation.
AGO 6819A
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