18.7. Generator of petrol engines


Removal

 PERFORMANCE ORDER

  1. Disconnect a wire from the negative plug of the rechargeable battery.
  1. Disconnect the socket from the generator and a wire from the generator B plug.
  1. Weaken an adjusting bolt of a tension of a belt and turn out a bolt of fastening of the generator.
  1. Pressing the generator towards the engine, take off a generator drive belt.
  1. Turn out a bolt and nuts and remove the generator from the car.

Dismantling


 PERFORMANCE ORDER

  1. Turn out screws and uncover the generator.
  1. Turn out screws and remove the brush holder.
  1. Remove a guide of a contact ring.
  1. Turn out a nut of fastening of a pulley, then remove a spring washer, a pulley and the expansion plug.
  1. Turn out four coupling bolts.
  1. Insert an edge of two flat screw-drivers between a forward cover and a magnetic conductor of the stator and uncover.

Assembly

Assembly of the generator is carried out to the sequences, the return dismantling.

Check

Rotor

 PERFORMANCE ORDER

  1. Measure by an ohmmeter resistance between contact rings. If resistance extremely low, so is available short circuit in a rotor winding. If conductivity is absent, so there is a break in a rotor winding, at the same time it is necessary to replace a rotor. Resistance: 3,1 Ohms.
  1. Ohmmeter check conductivity between a contact ring and an anchor of a rotor. With conductivity, replace a rotor.

Stator

 PERFORMANCE ORDER

  1. Ohmmeter check conductivity between stator coil wires. In the absence of conductivity replace the stator.
  1. Ohmmeter check conductivity between coils of the stator and the stator. With conductivity, replace the stator.

Replacement of brushes

If brushes are worn-out to the limit line, replace them.


 PERFORMANCE ORDER

  1. Unsolder a wattled wire and remove a spring and a brush.
  2. Install a spring of a brush and a new brush in the brush holder.
  3. Insert a brush so that there was a distance in 2–3 mm between the line of extreme wear and an end face of the brush holder.
  4. Solder a wattled wire to the brush holder.

Installation

Installation is carried out to the sequences, the return to removal.


  1. Install the generator on the engine. Insert the central bolt of fastening of the generator, but do not screw on it a nut.
  2. Move the generator to one party on the central bolt of fastening of the generator and measure distance between a support of the generator and an arm. Pick up set of expansion washers corresponding to the measured distance.
  3. Insert expansion washers and screw a nut on the central bolt of fastening of the generator.