TM 9-2350-261-20-1
STE/ICE-R TEST 90 DC CURRENT 0 TO 1500 AMPS
INITIAL SETUP
Tools:
STE/ICE-R Test Set (Item 71.1, App D)
Personnel Required:
Unit Mechanic
References:
See your -10
TM 9-4910-571-12&P
Equipment Conditions:
Engine stopped (see your -10)
Carrier blocked (see your -10)
STE/ICE-R power hooked up (page 3-275)
STE/ICE-R starter circuit test hooked up
(page 3-279)
1.
2.
3.
4.
5.
NOTE
NOTE
If current probe is below room temper-
ature, wait at least 5 minutes after con-
necting probe to VTM before doing offset
test, or perform offset within 30 seconds
of starting each measurement.
Perform offset test.
Stray magnetic fields can affect the
current reading. Such fields may exist
within a foot or so of operating vehicle
generators
and alternators, motor
generators under load, and electric
motors. Keep current probe at least one
foot away from any operating generators,
alternators, or electric motors.
a. Set TEST select switches to 90.
b. Push and hold TEST button until CAL
appears. Release TEST button.
c. If VTM reads between -225 and +225,
7. During offset test, the component being tested
must be off, and the circuit must be
de-energized.
offset test passes.
a.
b.
d. If offset test fails, see
Turn off component to be tested.
Install current probe where current is to
be measured.
TM 9-4910-571-12&P.
c.
Press and release TEST button.
d.
Turn on circuit used to condition current
probe. If starter is used to condition probe,
energize starter long enough to obtain a read-
ing. Do not allow engine to start.
e.
Push and hold TEST button until CAL
appears. Release TEST button.
If VTM reads between -225 and +225,
offset test passes.
If offset test fails, see
TM 9-4910-571-12&P.
Note polarity sign of conditioning current. If
readout is negative (-), reverse current probe,
and repeat steps 1 thru 4.
Turn off circuit used to condition current
probe.
6. Perform offset test.
3-294 Change 1
