Car Starter

The Startanlge The starter system consists usually of a battery powered direct current motor, the ignition start switch, possibly of a starting relay, a solenoid at the starter engine and the wiring. For starting needed the numbers of revolutions of the engine from approximately 80 to 160 rpm are formed by a suitable translation by engine gear rim and bendix drive. Thrust screwing friction starter with reduction gear Between the starter engine and the pinion additionally a planetary gear is inserted as reduction gear, which has the task to reduce the high number of revolutions of the starter and at the same time to increase the torque at the pinion. Free-wheel It has the task to transfer during the starting procedure the drive moment of the starter engine actuated to the pinion. If the engine starts, i.e. the anchor from the engine is propelled, then it must separate the pinion still which was positioned from the starter engine.

Thus inadmissibly strong winding and thus destroying of the starter up are prevented. One differentiates: - Role free-wheel. It is used with smaller starters for passenger car and lighter trucks. - Lamella free-wheel. It is used with larger starters for Nkfz. Role free-wheel (picture) It consists of the freewheel driven head with the role sliding curves, the roles and the coil springs. The roles slide on the pinion shank. The role sliding curves narrow themselves in a direction. If the freewheel driven head is propelled by the starter engine, then the roles are pressed into the narrowing part of the role sliding curves; the pinion shank is coupled thereby with the starter engine. After starting the engine the roles of the overhauling pinion, which is propelled now by the engine, are pressed into the further part of the role sliding curves; the grip is solved. Error tracing: Some motor vehicle types use starting relays. The starter is not bestromt therefore directly by the starter lock. Starter relays are used to protect around engine electronics against high crest currents those arise, if for example a battery came into the years and at achievement lost. Then that became Starter all river from the battery pull and all relays in the vehicle momentarily drop.

 It comes to a fast reciprocal effect between tension admission and voltage drop. The relays begin to flutter. In the relay coils tension is indicated, which is transferred to electronics. These induction voltages reach partially voltage peaks of some hundred V - more sensitive or electronically not protected Devices like the engine expensive equipment and construction units of the Komforelektronik, Airbag, ABS etc. can be destroyed. In newer vehicles protection electronics is already inserted this in the electronic devices dangerous voltage peaks eliminates. The most frequent errors and the diagnoses • Starter turns non fast successive thing clicks the solenoid 1. Battery voltage and achievement examine > Starting 2. Battery clamps and connections of the starter examine/geg. clean • Starter does not turn non lamps in the instrument panel shines (also not in the ignition position)! 1. Battery voltage examine - terminal clamps at the battery examine/clean - voltage supply to the starter lock examine • Starter turns non lamps in the instrument panel goes out during Startstellung 1.

 Battery voltage examine (the tension falls wärend the starting procedure/ignition key position = start - under 10,7 V, battery renew or charge) 2. To high starter power input - engine or starter engine blocked (happened if the bendix drive free-wheel does not release, then the starter off burns notices one at an unpleasant smell after burned rubber) --------- 3. Starter lock defectively > Breakdown assistance • Starter turns non lamps in the instrument panel shines! (no clicking with the solenoid) 1. Battery voltage examine (the tension falls wärend the starting procedure/ignition key position = start - under 10,7 V, battery renew or load) 2. Connection at the starter (solenoid clamp 50) examine - examine voltage supply at clamp 50 - oxidation at the terminal clamps 3. - Mass at the starter examine - engine mass examine/geg. clean 4. Solenoid defectively - iron core puts firmly - often helps to knock easy a small impact on (back of the head)… with a small hammer or iron pipe, on the solenoid, while someone starts second in the vehicle. In the winter by penetrated humidity freezes (only under 0°C! ) > thaw out with wamen water! 5. Starter lock defectively > Breakdown assistance • Starter turns non lamps in the instrument panel shines! (only solenoid clicks when starting)

1. Connections at the solenoid and starter examine - oxidation at the terminal clamps - cables charred or abgerostet (picture)

2. Solenoid defectively - contacts on the inside burned down > Breakdown assistance

3. Starter engine defectively - coals worn out - runner coil burned through, open soldered connection > no breakdown assistance possible > Vehicle drag along! top Starter Starter repair • Symptom: o Starter first still turns with noticeably less achievement, how > in the case of a weak battery; (Days after) only after click the solenoid - intensive, stinking smoke (edge of wiring loom) • Breakdown assistance: o 1. Possibility… Bridge the solenoid and the burned down cable to the starter engine with a jumper cable.

Possibility… Vehicle drag along • Diagnosis: o By oxidation scaled cable connection from the magnet switch to the starter engine (coal carrier o • Repair: The repair would be strictly speaking relatively simple, because all parts are available including coal carrier and cable with lug. We imagined however, with a trade wind Bj. 89 the repair may not cost straight to anything.

As alternative a still unused lug was offered like it for the battery connections the cars HiFi amplifier is used and a 2.5 mm ² to cables. The cable have we 3 subject taken by the cross section to increase… thus received we about 8 mm ². Straight one so sufficiently for 80 -150 ampere.

In order to firmly connect the cable connection between solenoids and coal carriers, the lug screwed onto the solenoid is soldered and the Kohlentraäger with an extra of the cables tapes and likewise soldered. It is to be made certain that the network becomes not too large, and does not line up later at the starter inner wall (earthing)