TM 5-3895-373-20
REFERENCE INFORMATION
ENGINE AND ENGINE LUBRICATION SYSTEM
Refer to TM 5-3895-373-10 for engine starting and equipment operating procedures. Refer to paragraph 2.10 for general
information and for connecting/disconnecting STE/ICE-R test set. Shut down engine on completion per TM 5-3895-373-
10. Refer to paragraphs 1.14 through 1.17 for engine system operating principles.
ENGINE SPEED - STE/ICE-R TEST 10
DESCRIPTIONTEST PROCEDURES- Continued
Measures engine speed in the range of 50 to 5000 rpm
4.
Turn ignition switch to start position and crank engine for
using pulse tachometer generator.
10 seconds per TM 5-3895-373-10.
DCA Test Pins: c and d
5.
Observe displayed value. Displayed values are in rpm. If
.9.9.9.9 is displayed, engine speed is not
PRE-TEST PROCEDURES
within test range. Expected display value is 100 rpm
minimum.
Run confidence test per TM 9-4910-571-12&P.
6.
Start engine per TM 5-3895-373-10.
POSSIBLE ERROR MESSAGES
7.
Set throttle control to IDLE per TM 5-3895-373-10.
None
8.
Repeat step 5. Expected display value is 500 to 850 rpm (650
rpm is nominal).
TEST PROCEDURES
1.
Set TEST SELECT switches to 10.
9.
Set throttle control to MAX per TM 5-3895-373-10.
2.
Set ENGINE CRANK switch on DCA housing to
10. Repeat step 5. Expected display value is 2640
TEST to prevent engine from starting.
+40 rpm (2650 rpm is nominal).
3.
Press and release TEST button.
11. Shut down engine per TM 5-3895-373-10.
If STE/ICE-R reading does not approach expected value, check pulse tachometer generator per DCA diagnostics,
paragraph 2.21.
Cranking rpms will vary with temperature. At -22°F (-30C) cranking rpms may be as low as 80 rpm, minimum.
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