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Starters Audi 100 C4

Starter 1 illustration ~230 words

DESCRIPTION

Starter is a brush-type, series-wound electric motor with an overrunning clutch and reduction gearing. (Scheme 1) Field frame is enclosed by commutator end frame and drive bushing. Field frame carries pole shoes and field coils. A splined armature shaft drive end carries drive assembly.

STARTER DOES NOT CRANK ENGINE

  1. Ensure battery is fully charged, engine-to-body ground strap is connected and all cable connections are clean and tight. With ignition switch in crank position, measure voltage at starter solenoid wire terminal. If reading is 8 volts or more, go to step 3).
  2. If reading is less than 8 volts, measure voltage at Black/Yellow wire terminal of ignition switch. If reading is at least 8 volts, check for resistance in wiring between ignition switch and starter solenoid. If reading is less than 8 volts, replace ignition switch.
  3. With ignition switch in crank position, measure voltage at armature terminal of starter solenoid. If reading is 8 volts or more, repair or replace starter. If reading is less than 8 volts, replace starter solenoid.

Note. On vehicles equipped with automatic transmission, also check Park/Neutral switch.

STARTER CRANKS TOO SLOWLY

Ensure engine crankcase is filled with oil of recommended viscosity. Ensure battery is fully charged. Ensure all cable connections are clean and tight. If starter still turns slowly, repair or replace starter.

OVERHAUL

Note. For exploded view of starter (Scheme 1)

Scheme 1

Scheme 1: OVERHAUL