Specification Of Starter (Planetary Gear Reduction Type); Alternator; Outline Of Alternator; Structure Of Alternator - Kubota D1803-CR-E4 Workshop Manual

4. ENGINE
8.7.4 Specification of starter (planetary
gear reduction type)
D1803-CR-E4, -
TE4, -TIE4
Nominal output
V2403-CR-E4, -
TE4, -TE4BG, -
TIE4
Pinion gear teeth

8.8 Alternator

8.8.1 Outline of alternator

The alternator self energizes while the engine is
running and charges the battery.
Charging the battery using the alternator prevents
reduction in battery capacity making it possible to use it
for long term.

8.8.2 Structure of alternator

The alternator is made up of a pulley, starter, and IC
regulator and the like.
(1) Pulley
(2) Drive end frame
(3) Rear end frame
(4) Stator
(5) Terminal
(6) Connector
(7) IC regulator

8.8.3 Function of alternator

The alternator generates 3 phase current by means of
a fixed coil and rotation of a rotor.
The current generated is rectified using a rectifier made
up of diodes.
The rectified current charges the battery.
4-72
12 V, 1.4 kW
12 V, 2.0 kW
9
(8) Spring
(9) Brush
(10) Rectifier
(11) Rear end cover
(12) Rotor
(13) Bearing
D1803-CR-E4,D1803-CR-TE4,D1803-CR-TIE4,V2403-CR-E4,V2403-CR-TE4,V2403-CR-TE4BG,V2403-CR-TIE4
Operation of charging system
(1) Stator coil
(2) Rotor coil
(3) Main switch
(4) Charge lamp
(5) Battery
(6) Load
MECHANISM
8. Electrical system
(7) Alternator
(8) IC regulator
M.I Monolithic IC
C
Tr1 Transistor
Tr2 Transistor
KiSC issued 12, 2018 A