Figure 4-26. Fuel Pump Assembly

TM 10-3930-633-12

Figure 4-26. Fuel Pump Assembly

4-52. Fuel Pump Replacement

chemically treated paper element. A restriction

indicator, m o u n t e d o n t h e c o w l , measures

If fuel pump replacement is required, refer to

pressure loss to determine when the element

figure 4-26. Disconnect the fuel inlet hose and the

should be cleaned or replaced. A red signal shows

fuel line connector at the fuel pump body. Remove

in the window of the indicator when the element

the two screws and lockwashers and remove the

requires cleaning or replacement.

fuel pump from the engine. Scrape away all

b. Maintenance. The air cleaner restriction

residue of the mounting gasket from the cylinder

indicator will signal when the element is so

block surface. Using a new mounting gasket,

restricted as to need cleaning or replacement.

install the replacement pump and secure with the

This indicator cannot determine when the element

mounting screws and lockwashers.

is damaged or ruptured. For this reason, the air

4-53. Air Cleaner

cleaner element must be carefully inspected after

a. General. The air cleaner assembly is

each cleaning. It is very important that the air

mounted on the right side of the vehicle and is

intake system ductwork be carefully checked for

connected to the carburetor. The air intake

leaks at each quarterly interval, to prevent entry

system is sealed so that all air passing through

of unfiltered air to the engine.

the carburetor has been filtered through the