T O 35C2-3-442-2
4. Place the battle short switch S7
tag, then disconnect wiring to the DC relay
to the ON position and measure the voltage
terminal board. Remove the four nuts se-
across terminal A5-21 and terminal A5-15.
curing the relay in position.
The voltage should read 20-32 VDC. When
the start-run-stop switch S2 is placed in
the run position. Also measure voltage
across terminal A5-23 to terminal A5-15.
a . Connect the DC relay assembly to
The voltage should read 20-32 VDC. If
voltage is measured at A5-21 but not at
and perform test specified in procedural
A5-23, disconnect wire from A5-21 and
check for continuity between terminal A5-21
and terminal A5-23 with A5-21 positive. If
there is no continuity, replace diode CR6.
assembly schematic. Refer to this
5. Measure the voltage across ter-
s thematic when checking individual
minal A5-12 to terminal A5-15. The voltage
components for required values.
should read 20-32 VDC when the start-run-
stop switch S2 is placed in the START posi-
b. Remove the DC relay from the test
tion. Also measure voltage across terminal
A5-9 to terminal A5- 15. The voltage should
read 20-32 VDC. If voltage is measured at
6-89. DISASSEMBLY. Refer to figure
terminal A5-12 and not at terminal A5-9,
6-24 and disassemble the DC relay assem-
ble to the extent necessary to accomplish
disconnect wire from terminal A5-12 and
r e p a i r . Pay particular attention to the
to terminal A5-9 with A5-12 positive. If
there is no continuity, replace diode CR3.
6. Disconnect connector P33 from
the float switch located in the day tank and
install a jumper between pins C and D of
Avoid breathing fumes generated by
P33 to simulate a low fuel fault condition.
tection is required.
Place the battle short switch S7 in the on
position. Place the start-run-stop switch
S2 in the RUN position and measure the
voltage from terminal A5-6 to terminal
a. Exercise care not to apply excessive
A5-15. The voltage should read 20-32 VDC.
heat when unsoldering components.
Disconnect the wire from terminal A5-17
b. Remove relay socket (10) by remov-
ing nut (7), lock washer (8) and washer (9),
to terminal A5-17 with voltage applied to
spacer (11) will fall free.
terminal A5-6. If voltage is measured at
terminal A5-6 and there is no continuity
6-90. CLEANING. Clean all components
from terminal A5-5 to terminal A5-17, re-
with a clean lint-free cloth moistened with
place relay A5K8. Remove jumper from
an approved cleaning solvent and dry
pins C and D of P33.