TM-9-2320-283-20-1

TRUCK TRACTOR, LINE HAUL, 50,000 GVWR, 6X4, M915A1

TECHNICAL MANUAL; ORGANIZATIONAL MAINTENANCE PART 1 OF 3

DECEMBER 1983

TM-9-2320-283-20-1 - Page 920 of 926

Card One

M915A1 Line Haul Truck Test Card

TM 9-2320-283-20-1

PRE-TEST INSPECTION

1.

FAN BELTS/ALTERNATOR BELTS

2.

OIL LEVEL

3.

RADIATOR COOLANT LEVEL

4.

FUEL TANK FUEL LEVEL

5.

BATTERIES

TEST

NO.

PERFORMANCE CHECKS

VISUAL

OIL AND COLLANT LEVEL

VISUAL

OIL PRESSURE (GAGE RADING)

10 PSI MIN @ IDLE

35-50 PSI @ HIGH IDLE

VISUAL

COLLANT TEMPERATURE (GAGE

READING) 180-200

°

F

10

IDLE SPEED 580-650 RPM

MAX GOVERNOR SPEED 2100 RPM

CRANING SPEED 200 RPM

12

POWER 1160 RPM/SEC MIN

13

POWER (% POWER ) - 75%

14

COMPRESSION UNBALANCE 0-8%

67

BATTERY VOLTAGE

@ HIGH IDLE 24.8 - 27.6 VDC

72

STARTER CURRENT, FIRST PEAK

1000-1650 AMPS @ CRANKING

83

CRANKING BATTERY VOLTAGE 24.8 -

27.6 VDC @ HIGH IDLE

CONTROL OF NEXT TEST

01

INTERLEAVE WITH SPEED (RPM)

02

DISPLAY MIN VALUE

03

DISPLAY MAX VALUE

04

DISPLAY PEAK TO PEAK VALUE

INITIAL ENTRY

58

NUMBER OF CYLINDERS ENTRY (6)

59

NUMBER OF CYLINDERS DISPLAY (6)

60

VID ENTRY (TO BE SUPPLIED)

61

VID DISPLAY

66

CONFIDENCE TEST

(SECOND ENTRY 99)

OPERATOR MESSAGES

PASS

TEST SUCCESSFULLY COMPLETED

CAL

OFFSET TEST IN PROGRESS

RELEASE TEST BUTTON

CIP

INITIATE CI POWER SIMULATION

CYL

ENTER NUMBER OF CYLINDERS OR

CYLINDER PAIRS

FAIL

TEST FAILED

GO

CRANK ENGINE

OFF

IF CI POWER DECELERATE

UEH

ENTER VEHICL IDENTIFICATION

NUMBER

----

VTM ACCEPTING DATA OR INITIAL

TURN-ON

0066

DIAL 99 PUSH TEST BUTTON

8888

CHECK DISPLAY

ERROR MESSAGES

E000

INFORMATION NOT AVAILABLE

E001

TEST NON-EXISTENT

E002

TANSDUCER NOT CONNECTED

E004

VID OR NUMBER OF CYL NOT

ENTERED

E005

CAL NOT PREFORMED

E006

NUMBER OF CYL NOT VALID

E007

NUMBER OF CYL CONFLICTS WITH VID

E008

TEST PROBE NOT CONNECTED

E009

ENGINE NOT RUNNING

E010

BAD VID

E011

ACCED/DECL TIME TOO LARGE

E012

TACH PICKUP MISSING

E013

BAD DATA

E014

BAD NUMBER OF CYLINDERS

E018

TEST DISCONTINUED EXCESSIVE

TIME

9999

OVERLOAD OR NUMBER EXCEEDS

DISPLAY CAPABILITY

DCA CONNECTOR LOCATION AND HOOK-UP

POWER AND COMPRESSION TEST

TEST 13

% POWER

(VID - VEHICLE IDENTIFICATION

NUMBER REQUIRED)

TEST 12

RPM/SEC

(ENTER NUMBER OF CYLINDERS -

TEST SELECT 58, ENTER 6)

TEST 14

COMPRESSION UNBALANCE (FUEL

SOLENOID VALVE IN-LINE

CONNECTOR DISCONNECTED -0

FUEL SHUTOFF)

TA 238329