Page 253 - Mechanic Diesel - TT

MECHANIC DIESEL - CITS

LESSON 76 - 79: Study about distributor and its components

Objectives

At the end of this lesson you shall be able to
• explain about Distributor
• demonstrate different components of Distributor.

Distributor
The primary circuit for generating high voltage current in the ignition coil is c. B. The function of breaking and
connecting through the points, as well as supplying the high voltage current from the secondary winding of the
ignition coil to the spark plug is done by the distributor. come on in addition, according to the increasing speed of
the engine C. B. As much as the exposure of the point

Pre-processing is done by the distributor. In the early days ‘Delco’ company distributors were used on the engine.
Hence the distributor is also called as ‘Delco’. Currently T. V. S. Distributors of T. V. S. Lucas, Presto light and
Globe Auto are in use.
Distributor unit includes following components
1 Distributor cap
2 C.B. point
3 Rotor

4 Distributor shaft
5 Centrifugal advance mechanism
6 Distributor body or housing
7 C.B. Point mounting plate or breaker plate

The distributor shaft is fitted between bronze bushings in the distributor body or housing. The distributor shaft is
driven by the cam shaft. The drive gear of the cam shaft meshes with the drive gear on the oil pump shaft or the
drive gear on the distributor shaft. Some distributor shafts have a dog pin on the lower end. The distributor shaft
with dog pin fits into the oil pump gear nut. Hence the cam shaft drives both the oil pump gear and the distributor
shaft at the same time can get The advance cam in the centrifugal advance mechanism and the advance weights
are mounted on the distributor shaft from the inside of the distributor housing with the help of two springs. The
ignition cam sits on the advance weights pin (peg) and on the upper end of the distribution shaft. The ignition cam
has lobes machined on it equal to the number of cylinders.
In the distributor housing, the breaker plate on the top side of the centrifugal advance mechanism is fitted to the
housing by means of screws. C on the breaker plate. B. The fixed point carrier in the point is fitted with a screw.
C. B. in point

An adjusting screw is provided on the breaker plate in the neck of the point carrier to be set. C. B. The movable
point in the point is fitted to the pole of the breaker plate provided in ucett. The Baker arm creel fiber raving block
of the mountable point sits on the emission cam on the riscouter shaft. Rubbing due to spring pressure on breaker
arm Inonk keeps sitting on the cam. The work of breaking and connecting the primary circuit c. B. done by point.
Therefore, this point is called the contact breaker point (Contact Breaker Point) or c. B. It is called Poit. C. B. It is
called a point. C. B. Points are inlaid with platinum or tungsten metal.
The rotor sits on top of the distributor shaft after the ignition cam. A locating knob on the inside of the rotor fits
into a groove on the shaft end to keep the rotor fixed on the shaft. A brass strip is mounted on the upper surfaces
of the rotor at a distance from its center to just short of the segment. Through this strip, the high voltage from the
ignition coil is transferred to the cap segment by taking a Karanj jump. The rotor is made of hard fiber or bank light
and is of different shapes for different car makes.

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