TM-9-2320-387-24-1

TRUCK, UTILITY: S250 SHELTER CARRIER, 4X4, M1113

TECHNICAL MANUAL; UNIT, DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE, VOLUME 1

DECEMBER 1997

CHANGE 1

TM-9-2320-387-24-1 - Page 536 of 1205

TM 9-2320-387-24-l

1

2-46.

STE/ICE-R

TEST PROCEDURES

(Cont’d)

ENGINE RPM (AVERAGE)

TEST #lO

Description:

This procedure measures engine

speed in the range 50 to 5,000 rpm. At

speeds below 50 rpm, the VTM will

display 0. At speeds above 5.000 rpm,

the display may give a false reading.

Test requires DCA hookup only.

Typical Applications:

Check engine speed.

Test Procedure:

Pre-Test Procedures:

Run confidence test.

Possible Error Messages:

EO14 Incorrect number of cylinders

entered.

1. Set TEST SELECT switches to 10.

2. Press and release TEST button.

3. Start engine.

4. Observe displayed value (RPM).

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