Engine model D333TA has only one filter.
or lint free cloth. Be sure that screen of filter element is
b. Primary Fuel Filter Service (Model 687C18-ES
free of all sludge or foreign matter.
(4) Visually inspect all parts for cracks, holes,
or excessive wear. Repair by replacing defective parts.
(5) Install filter element on stud and secure
secures bowl to filter head and remove bowl and
(6) Place washer on bowl, position bowl over
(2) Remove nut that secures filter element to
filter element, and secure with gasket and nut.
stud in filter head, then remove filter element.
(7) After fuel line is connected to inlet port
(3) Clean all parts in an approved cleaning
solvent and dry thoroughly with compressed air
c. Secondary Fuel Pump Service (Model 687C18-
(2) Remove plug from center bolt; remove
center bolt and center bolt washer, then remove filter
body from cover.
(3) Remove disposable filter element and
washer and discard.
(4) Clean all parts with an approved cleaning
solvent and dry thoroughly. Be sure that all sludge and
foreign matter has been removed from filter body.
(5) Install new filter element in body; install
washer on cover, then install filter body in cover and
secure with center bolt washer and center bolt.
Figure 3-11. Primary fuel filter service.
Figure 3-12. Secondary fuel filter service