TM 5-6115-465-34
TO 35C2-3-446-2
NAVFAC P-8-625-34
TM06858B/06859D-34
c. Cleaning and Inspection.
e.
Testing,
(1) Clean all non-electrical metal parts in
(1) Refer to figure 4-8 and connect the posi-
dry cleaning solvent (Federal Specification P-D-680)
tive lead of a 24 Vdc source to pin A of connector
and dry with filtered compressed air.
J12.
(2) Clean electrical components with filtered
(2) Connect the negative lead to pin B.
compressed air and a soft bristle brush.
(3) Place test or reset switch in the TEST or
(3) Visually inspect cover connector bracket
RESET position. All indicator lights shall lilluminate.
and base for cracks, corrosion, dents, and other
damage.
(4) Release test or reset switch. All indicator
lights shall go dark.
(4) Inspect load resistor for cracks, corro-
sion, burns, and evidence of overheating.
(5) Install a jumper between connector pins
C and D. Low oil pressure indicator light shall
(5) Inspect diodes for burns and other damage.
illuminate.
(6) Inspect electrical connector for bent or
(6) Remove jumper from pin D. Low oil pres-
broken pins, burns, cracks, and other damage.
sure indicator light shall remain lit.
(7) Check all wiring for burned insulation,
(7) Connect jumper between connector pins
bare wires, broken, or loose connections and other
C and E and reset test or reset switch.
damage.
(8) LOW oil pressure indicator light shall go
(8) If the wiring harness has sustained damage
dark and overspeed indicator light shall illuminate.
and requires repair or rebuild, refer to figure 4-12
for layout, identification, and material requirements
(9) Repeat steps (5) through (8) for connector
and Appendix A for detailed soldering and replace-
pins F through N.
ment procedures.
(10) If any indicator light fails to function
Testing and Repair.
d.
properly, disassemble fault locating indicator and
test that portion pertinent to the malfunctioning light.
NOTE
f. Installation. Install fault locating indicator
Disconnect leads to components prior to
in reverse order of removal procedures.
testing to avoid erroneous readings.
4-4.
MANUAL SPEED CONTROL.
(1) Test individual components using figure
Refer to the Operator and Organizational Main-
tenance Manual for manual speed control mainten-
ance instructions.
(a) Using a VOM, check for continuity be-
tween the following test points of transformer T1,
4-5. DC CONTROL CIRCUIT BREAKER.
TP16, TP5 and TP6, TP6 and TP7, TP5 and TP7,
Refer to the Operator and Organizational Main-
TP12 and TP13, TP13 and TP14, TP12 and TP14,
tenance Manual for dc control circuit breaker maint-
TP19 and TP20, TP20 and TP21, and TP19 and TP21,
enance instructions.
(b) If continuity is not indicated in all of
4-6. LOAD MEASURING UNIT.
the above checks and open circuit exists in the trans-
former windings, replace transformer (25, figure
a. Removal. Refer to the Operator and Organi-
zational Maintenance Manual for load measuring unit
removal instructions.
NOT E
b. Disassembly. Disassemble load measuring
Continuity of secondary windings of trans -
unit by following the ascending sequence of index
former T1 can be checked by using pins
numbers assigned to figure 4-11.
K and A, L and B, and M and C of plug P7
if desired. This method could show contin-
uity if the connector P7 is faulty, even
NOTE
though the transformer has an open winding.
Disassemble load measuring unit only as
is necessary for inspection, testing, and
(c) Using a VOM, check for open circuit
replacement of components.
indications (infinity) between the following test points
4-17
