STARTER SERVICE
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STARTER SERVICE. STARTING SYSTEM COMPONENTS. BATTERY CABLES AND WIRING IGNITION SWITCH NEUTRAL SAFETY SWITCH STARTER RELAY/SOLENOID STARTER MOTOR. TROUBLESHOOTING. Problems fall into Four categories No Crank Slow Crank Starter spins but does not engage Excessive noise. PROCEDURES.

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STARTER SERVICE

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Starter service

STARTER SERVICE


Starter service

STARTING SYSTEM COMPONENTS

  • BATTERY

  • CABLES AND WIRING

  • IGNITION SWITCH

  • NEUTRAL SAFETY SWITCH

  • STARTER RELAY/SOLENOID

  • STARTER MOTOR


Troubleshooting

TROUBLESHOOTING

  • Problems fall into Four categories

    • No Crank

    • Slow Crank

    • Starter spins but does not engage

    • Excessive noise


Procedures

PROCEDURES

  • VERIFY PROBLEM

  • DEVELOP CONSISTENT METHOD

  • PERFORM VISUAL INSPECTION

  • CHECK BATTERY PERFORMANCE

  • VERIFY ENGINE CONDITION IF NO CRANK OR SLOW CRANK

  • (BE CAUTIOUS!)


Trouble charts

TROUBLE CHARTS

  • FIND NORMAL AMPERAGE STARTER DRAW SPECS.

  • BY SYMPTOM, CAN SOMETIMES DIAGNOSE PROBLEM IN STARTING SYSTEM

  • TESTING EQUIPMENT MUST BE ACCURATE


Quick test

QUICK TEST

  • TURN HEADLIGHTS ON

  • CRANK ENGINE

  • NOTE RESULTS

  • DON’T OVERCRANK ENGINE


Current draw test

CURRENT DRAW TEST

  • DISABLE IGNITION

  • VISUAL INSPECT

  • HOOK UP EQUIPMENT

  • TURN OFF ALL ELECTRICAL LOADS

  • PERFORM TEST


Current draw test1

CURRENT DRAW TEST

  • VOLTAGE SHOULD NOT GO BELOW 10 VOLTS

  • AMPERAGE SHOULD BE ABOUT

  • 4 CYL. 125-150

  • 6 CYL. 140-160

  • 8 CYL. 160-200 small block

  • 8 CYL. 200-240 large block


Current draw test2

CURRENT DRAW TEST


Voltage drop test

VOLTAGE DROP TEST

  • A CIRCUIT RESISTANCE TEST IS ALSO CALLED A VOLTAGE DROP TEST

  • YOU HAVE TO TEST BOTH THE POSITIVE AND THE NEGATIVE SIDES


Voltage drop test insulated circuit

VOLTAGE DROP TEST INSULATED CIRCUIT

  • VOLTMETER ON LOW SCALE

  • HOOK UP EQUIPMENT

  • CRANK ENGINE

  • NOTE VOLTAGE

  • LESS THAN 0.5 VOLT

  • ALSO CALLED A INSULATED CIRCUIT RESISTANCE TEST


Voltage drop insulated circuit

VOLTAGE DROP INSULATED CIRCUIT

LAB 164


Voltage drop ground circuit

VOLTAGE DROP GROUND CIRCUIT

  • SELECT LOW SCALE

  • HOOK UP EQUIPMENT

  • CRANK ENGINE

  • NOTE RESULTS

  • LESS THAN 0.2V VOLTAGE DROP


Voltage drop ground circuit1

VOLTAGE DROP GROUND CIRCUIT


Solenoid circuit test

SOLENOID CIRCUIT TEST

  • DISABLE IGNITION

  • LOW VOLT SCALE

  • CONNECT ACROSS SOLENOID

  • CRANK ENGINE

  • VOLTAGE LESS THAN 0.2 VOLT


Solenoid circuit test1

SOLENOID CIRCUIT TEST


Free speed test

FREE SPEED TEST

  • TESTS STARTER FREE LOAD

  • AMPS

  • RPM

  • CAUTION!

  • COMPARE RESULTS TO SPECS


Bench testing a starter

Bench testing a starter


Starter r r

STARTER R & R

  • DISCONNECT BATTERY!

  • IDENTIFY WIRES

  • PAY ATTENTION TO SHIMS, ETC.

  • ADJUST DRIVE GEAR CLEARANCE

  • RE-CHECK OPERATION


The end

THE END


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