09656-90390 WASHER, ADJUSTING Denso Cross

1. General
1.1 Starter
The starter is either an overhang type with the pinion sliding surfaces not exposed to the outside or a front nose type with them exposed to the outside. The overhang type is so constructed as to prevent entry of dust into the inside.This starter is makes up for loss of torque due to reduced size and higher speed or the motor proper by incorporation of a speed reduction gears. Namely, this starter is a reduction starter.Major components include: the motor that develops torque; overrunning clutch that transmits torque and prevents the starter from overrunning after engine start; magnetic switch that brings the pinion into mesh with the ring gear while turning on/off the load current to the motor; the reduction gear that reduces armature rotation speed and transmits increased torque to the pinion.(1) Reduction gear The end of the armature is a gear which is in mesh with the reduction gear so that the armature torque is increased and transmitted to the pinion.(2) Overrunning clutch A roller-type overrunning clutch is used.Rollers are housed in the wedge-shaped grooves formed by the outer and inner races (sleeve) and pressed by springs.When the starter is started, the roller is pressed towards the narrower side of the groove, functioning as a key to transmit rotation of the outer race to the pinion. No torque is transmitted, however, from the pinion (as it is turned by the engine), as the roller compresses the spring moving toward the wider side of groove and releasing the key action.(3) Operation While the starter switch is ON, current flows from the terminal "SW" of the starter relay to the terminal "L" and closes the contact "P2".When the contact "P2" closes, current from the battery flows from the terminal "S" of the magnetic switch to the pull-in coil "P" and holding coil "H". Furthermore, the current that has decreased flows from the terminal "M" to the motor section.The plunger, attracted by the magnetic flux of the pull-in coil and holding coil, closes the contact "P1" and simultaneously pushes out the pinion turning slowly on weak current. When the pinion comes into complete mesh with the ring gear, the contact "P1" closes and the large current of the battery directly flows to the motor section to turn the pinion powerfully.In this condition, no current flows to the pull-in coil "P".The plunger is retained by the holding coil "H" alone. When the starter switch is placed to OFF, current to the holding coil "H" is interrupted. The plunger is returned to its original position by the return spring and the contact "P1" opens so that current to the motor section is interrupted.The moment the starter switch is opened, the battery current flows from the terminal "B" to the pull-in coil "P" and holding coil "H". Since the coils are wound in opposite direction to each other, the magnetic fluxes cancel each other so that the return spring can move the plunger back to its original position.1.2 Alternator
(1) Model