LEMON Manuals: Even more car manuals for everyone
Home >> Lincoln >> 1986 >> Mark VII Base >> Repair and Diagnosis >> Engine Mechanical >> Starter >> Starter - Gasoline Models >> Starter No-Load Test - Bench Test

Starter No-Load Test - Bench Test

NOTE: The starter no-load test will determine such problems as open or shorted windings, rubbing armature, and a bent armature shaft.
  1. Connect positive lead of load tester to positive terminal of a fully charged battery. Connect negative lead of tester to negative battery terminal. See Fig 1.
    Fig 1: Test Equipment Connections for Starter No-Load Test
    G806
  2. Connect voltmeter leads of load tester to positive and negative battery terminals. Connect a jumper wire between negative battery terminal and starter frame. Connect another jumper wire between the positive battery terminal and positive terminal of starter motor. See Fig 1.
    NOTE: Ensure no current is flowing through the ammeter.
  3. Turn rheostat to maximum counterclockwise position. Note the exact voltmeter reading. Disconnect the jumper leads from the starter motor. Reduce resistance of the rheostat until voltmeter reading is the same as when the starter was running. Ammeter should read 80 amps for 4" starter and 85 amps for 4 1/2" starter.
scientia non olet · About LEMON Manuals