TM 5-3895-373-20
REFERENCE INFORMATION
BATTERY/STARTER CIRCUIT
ENGINE SPEED -STE/CE-R TEST 10
DESCRIPTION
TEST PROCEDURES
Measures engine speed in the range of 50 to 5000 rpm using
tachometer generator.
1.
Set TEST SELECT switches to 10.
DCA Test Pins: c and d
2.
Set ENGINE CRANK switch on DCA housing to
TEST to prevent engine from starting.
PRE-TEST PROCEDURES
3.
Press and release TEST button.
Run confidence test per TM 9-4910-571-12&P.
4.
Turn ignition switch to start position and crank
engine.
POSSIBLE ERROR MESSAGES
None
5.
Observe displayed value. Displayed values are in
rpm. If .9.9.9.9 is displayed, engine speed is not
within test range. Expected display values are:
Cranking
100 rpm minimum
Idle
500 to 850
Full Speed
2640 +40 rpm
If STE/ICE-R reading does not approach expected value, check pulse tachometer generator per DCA
diagnostics, paragraph 2.21.
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