International Harvester Company TD-14A Operator's Manual page 53

MAINTENANCE
When
to
Replace Filter Elements
1. When fuel pressure indicator located
on the fuel inlet fitting of the injection pump
(see Illust.
42}shows the indicator in the red
or "Change Filter" area with the engine oper-
ating (either on gasoline or diesel cycle) it
means that one or both of the fuel filter el-
ements must be replaced, or that the fuel sys-
tem is clogged at some point.
It
may also be
accompanied by loss of power or misfiring of
the engme,
111ust. ~2
Fuel pressure indicator.
2. Before replacing the filter elements,
service the water trap.
(Refer to "Draining
and Cleaning the Water Trap" on page 50.)
3. If the indicator hand remains in the red
area after servicing the water trap, replace
the auxiliary fuel filter element and clean the
screen in the filter base.
4. Clean the primary pump filter screen.
Refer to page 52.
5. If the indicator hand remains in the red
area after replacing the auxiliary fuel filter
element and after cleaning the primary pump
filter screen, replace the final fuel filter
element.
NOTE:
It is advisable to check the auxiliary
fuel filter at the drain cock for traces of water
every day or more frequently under severe con-
ditions.
If water is found, it indicates that more
frequent servicing of the water trap is neces-
sary to obtain full service from the auxiliary
fuel filter element.
Precautions When Replacing Filter Elements
1. Cleanliness cannot be overemphasized.
In handling new elements, care should be exer-
cised to prevent dirt, water, etc., getting on
the elements. Keep new elements in original
packages until ready to install.
2. Before loosening the case studs, clean
the outside of the cases thoroughly with kero-
sene or diesel fuel to prevent dirt or foreign
material from entering the base when the cases
are removed.
Removing and Installing Auxi1i.aryFuel Filter
Elements
1. Clean the outside of the case and base
thoroughly with diesel fuel or kerosene to pre-
vent dirt or foreign materials from entering
the filter base when the case is removed.
2. Close the fuel tank shut-off valve, and
then open the bleeder and drain cock and allow
the fuel to drain.
3. Unscrew the case stud "A" and"lift both
the case and stud from the filter base.
See
Illust. 43.
4. Remove the old element and top and
bottom plates
"c"
and "E".
5. Rinse the inside of the case "B" thor-
oughly with diesel fuel to remove all dirt or
foreign substance.
6. Inspect the filter base carefully; if
dirt is found in the base on the clean side of the
filter element, remove and wash thoroughly
with two changes of clean diesel fuel or kero-
sene. Inspect the filter base gasket and re-
place with a new gasket if necessary.
7. Install the plates IICIIand
"z"
on the
new filter element
"n".
IMPORTANT!
Be certain that the plates
slide into the wire coils inside of the element
and that the top plate has the face stamped
II Topll on the top.
S. Place gasket IIFIIon the bottom plate
"E" and install the element on the base.
9. Inspect case gasket "G" and replace
with a new gasket if necessary.
Install the
case and case stud marked "AUX" and draw
the case down tight.
10. Open the fuel tank shut-off valve and
vent the auxiliary filter of all air before start-
ing the engine. The fuel level in the fuel tank
must be above the top of the bleeder to remove
all the air. It is advisable to check the aux-
iliary fuel filter at the drain cock for traces of
water every day or more frequently under
severe conditions.
If water is found, it clea.rly
indicates that more frequent servicing of the
water trap is essential to obtain the required
life of the auxiliary fuel filter element.
Conttnued on next page
51