TM 5-6115-593-12
TO 35C2-3-463-1
WARNING
Set MAINTENANCE LOCKOUT switch to
LOCKOUT. Disconnect negative cable
from batteries. Remove external power
by opening CB101 and disconnecting
power from receptacle J101. Load
terminals of generator set circuit breaker
(CB2) may still be energized with bus
voltage.
(1)
Position circuit breaker CB1 (87,
figure 4-22, sheet 2) in the ON
position.
(2)
At rear of panel, remove and tag
leads to circuit breaker.
(3)
Using an ohmmeter (Rx1 scale), test
breaker for closed contacts. If meter
indicates an open circuit, replace
breaker.
(4)
Position
circuit
breaker
in
open
position. With ohmmeter at Rx1
scale, test breaker for open contacts.
If meter indicates a closed circuit,
replace breaker.
c.
Test for SPST (single-pole, single-throw)
toggle switches.
(1)
Toggle switch to the ON position.
(2)
At the rear of the panel, remove one
lead from the switch.
(3)
Using an ohmmeter (Rx1 scale), test
switch for a closed circuit. If meter
indicates an open circuit, replace
switch.
(4)
Toggle switch to OFF position. Using
ohmmeter on Rx1 scale, test for open
circuit. If meter indicates a closed
circuit, replace switch.
d.
Test for SPTT (double-pole, triple-throw)
toggle switches.
(1)
With
switch
in
center
(neutral)
position, check that contacts 1-2 and
5-6 have continuity. Ohmmeter
should be set to Rx1 scale.
(2)
With switch in up (ON) position, check
that contacts 2-3 and 5-6 have
continuity.
(3) With switch in down (OFF) position,
check that contacts 1-2 and 4-5 have
continuity.
e.
Test for BATTERY CHRG AMPS meter (11,
figure 4-21).
(1)
Disconnect
minus
lead
from
BATTERY CHRG AMPS meter M21.
(2)
Observing
polarity,
connect
a
multimeter (set to measure DC amps)
in series with disconnected minus
lead and open terminal of meter M21.
(3)
Meter M21 reading should be within
+10 percent of multimeter reading.
(4)
Disconnect
test
equipment
and
reconnect lead to step (1).
f.
Test of ELAPSED TIME meter (8, figure 4-
21). To test ELAPSED TIME meter M5,
check against any time source standard
such as a wristwatch or a wall clock. Meter
M5 should be within +5 percent of time
sourge.
g.
Test of BATTERY CHRG VOLTS (7, figure
4-21). To test BATTERY CHRG VOLTS
meter M20, connect a multimeter across
meter M20 terminals. Meter M20 should be
within +5 percent of multimeter reading.
h.
Test of ENGINE OIL TEMP meter (13,
figure 4-21).
(1)
Disconnect
negative
lead
from
ENGINE OIL TEMP meter M2.
(2)
Connect one end of a precision (+1
percent) 1,096-ohm resistor to open
terminal of meter M2.
(3)
Connect positive side of 24V DC
source to the resistor connected to the
positive terminal of meter M2.
(4)
Connect
open
end
of
precision
resistor to minus side of 24V DC
source.
4-68