Chevrolet DB90 Series, Service Manual

Page: 130 / 242

Sec. 6Y-124
A. C. GENERATING SYSTEM (NON-INTEGRAL TYPE)
Figure 5 —Schem atic D iagram o f A .C . C harging
Circuit w ith
9000590
Regulator and
1115827 Field Relay (Typical)
covered by this supplem ent. A ll units are s e lf -
rectifyin g, alternating current (A.C.) type with
d ire ct current (D.C.) output.
The generator is a ir -c o o le d by a sin g le fan
attached to the drive p ulley or by blades attached
to each end of the rotor assem b ly .
The alternating current generator c o n sists of
the slip ring end fram e, the drive end fram e, the
sta to r, and the rotor. The stator is com posed of a
la r g e number of w indings assem b led on the in sid e
of a lam inated iron core that is attached to the gen-
Figure 6 —Schematic D iagram of A .C . Charging Circuit
w ith 1119507 Regulator a n d 1115827 Field Relay
Field Relay
F " Terminal
No. 2 Terminal
No. 3 Terminal
No. 4 Terminal
T-8157
Figure 7—V ibratin g Point Type Regulator (Typical)
erator fram e, or that fo rm s the generator fram e.
The rotor rev o lv es within the stator on bearings
in each end fram e.
NOTE: On 4 2 -, and 61-am p gen erators, a ball
bearing is used at the drive end and a ro ller b ea r­
ing is u sed at the slip ring end. On 62-am p g en er­
a to rs, the rotor rev o lv es on a ball bearing in each
end fram e.
On 4 2 -, 6 1 -, and 62-am p gen erators (except
62-am p generator m odels 1117756 and 1117781),
two brushes carry current through two slip rings
to the field c o ils which is wound concentric with
the rotor shaft.
On 62-am p generator m odels 1117756 and
1117781, two sep arate brush a s s e m b lie s , each of
which contain two b ru sh es, carry current through
two slip rin gs to the fie ld c o il which is wound con­
cen tric with the rotor shaft. A sp ecia l constant
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