Operating instructions

ther damage to a disabled component. Be
careful during inspection and trouble-
shooting, so that damage can be avoided.
36. Scope
This section covers troubleshooting
which is peculiar to organizational (second
echelon) maintenance operations. For
troubleshooting procedures performed by
the operator, see paragraphs 25 through
27.
37. Procedure
Malfunctions which may occur with the
nozzle tester are listed in tables II and
III. In effect, table III is the continuation
of table II, paragraph 27. Causes are listed
opposite each malfunction and are ar-
ranged according to the ease of correction.
Table III. Troubleshooting
Malfunction
1. Test fluid
starvation
Probable cause
a. Filter element
dirty or
plugged up.
b. Leaking O-
rings, seal,
or gaskets of
filter assem-
bly.
c. Other causes --
Corrective action
a. Replace filter
element
(par. 39).
b. Discard old
O-rings,
seal, or
gaskets and
replace with
new parts
(par. 39).
c. Refer other
causes to
field
mainte-
nance e per-
Malfunction
Table III. Troubleshooting – Continued
Corrective action
2. Unable to
build up
hydraulic
pressure
on hydrau-
lic pres-
sure gage
(2, fig. 1).
3. Indications
of test
fluid leak-
age at
plunger of
body and
plunger
(l-A, fig.
3).
Probable cause
a. Defective gas-
ket on gage
valve
assembly.
b. Dirt accumula-
tion in dis-
charge block
assembly.
c. Defective valve
gasket or O-
ring in dis-
charge block
assembly.
d. Scratched or
scored valve
seat.
e. Defective
hydraulic
pressure
gage.
f. Other causes --
sonnel for
correction.
a. Discard old
gasket and
replace with
new gasket
(par. 41).
b. Clean dirt from
discharge
block assem-
bly (2, fig. 4).
c. Discard old
valve gasket
and O-ring
and replace
with new
gasket and
O-ring (par.
41).
d. Replace valve
seat (par.
41).
e. Replace with
new hydrau-
lic pressure
gage (par.
41).
f. Refer other
causes to
field main-
tenance per-
sonnel for
correction.
Refer malfunc-
tion to field
maintenance
personnel for
correction.
Section V. FUEL RESERVOIR ASSEMBLY
Note. The key numbers shown below in parentheses in this section refer to figure 3.
38. Description
The fuel reservoir assembly (2) is
mounted on t o p of the body and plunger
assembly (1) and consists primarily of a
reservoir (2B), cover (2J), center rod as-
sembly (2G), and filter element (2D). The
reservoir assembly can be removed from
the body and plunger assembly by taking
the cover off the reservoir and unscrew-
ing the center rod assembly. Test fluid
used for testing the performance of fuel
injector nozzles is stored in the reser-
14
voir. The fluid is forced through the filter
element to remove impurities.
39. Maintenance
a. General. Organizational personnel
has the authorization for the complete
maintenance of the fuel reservoir assem-
bly to the extent of removing, disassem-
bling for inspection and replacement of all
unserviceable components, and the final
steps of assembling and installing the as-
sembly.