Chevrolet CHEVY VAN G10 SERIES Service Manual page 220

G en e ra l D escrip tio n
M a in te n a n c e a n d A d ju stm e n ts
S tatic C h eck s ................................................................... 6Y -11
S ystem C o n d itio n T est ................................................. 6Y -11
V o ltag e R e g u la to r A d ju stm e n t
System C o m p o n e n t T ests ............................................6 Y -13
D elc o tro n O u tp u t T est ............................................6 Y -13
In d ic a to r L a m p In itia l F ield E x citatio n
C irc u it T ests
The charging system includes the b attery , generator, regula­
to r, telltale light, and necessary wiring to connect these
com ponents. The D elcotron is offered as standard equipm ent,
although there are various capacities available on all models.
The D elcotron continuous o u tp u t A.C. generator (Fig. lc )
consists o f tw o m ajor parts, a stato r and a ro to r. The stato r is
com posed o f a large num ber o f windings assembled on the
inside o f a lam inated core th a t is attached to th e generator
frame. The ro to r revolves w ithin the stato r on bearings located
in each end fram e. Two brushes are required to carry current
through the tw o slip rings to the field coils w ound concentric
w ith th e shaft o f the rotor. Six rectifier diodes, contained in a
rectifier bridge, are m ounted in the slip ring end frame and are
CH ARG IN G SYSTEMS
INDEX
P age
6Y -9
6Y -11
6 Y -1 2
6 Y -13
GENERAL DESCRIPTION
joined to the stato r winding. The diodes change the D elcotron
A.C. current to D.C. current.
Chevy Van models. The function o f the regulator in the
charging system is to lim it th e generator voltage to a pre-set
value by controlling the generator field current.
indicator lamp. The relay unit allows the lam p to light (as a
bulb check) w ith the ignition key on and engine n o t running.
When the engine is started and the generator begins to charge,
the indicator light goes o u t indicating th at the system is
operating normally.
F ield C irc u it R esistan c e W ire T ests
F ie ld R e la y C h eck an d A d ju stm e n t
Clositig V o ltag e A d ju stm e n t
O th e r H a rn e ss C h e c k s ............................................6Y -1 5
C o m p o n en t P a rt R e p la c e m e n t
P ulley R e p la c e m e n t ................................................. 6Y -1 5
G e n e ra to r R e p la cem en t ......................................... 6 Y -1 6
R e g u la to r R e p la cem en t
A double contact tw o u n it type regulator is available on
The double contact u nit uses the field relay to tu rn out the
ENGINE ELEC TR IC A L 6Y-9
P age
6 Y -1 4
6 Y -1 5
6 Y -1 5
6Y -1 5
......................................... 6Y -1 6
C H E V Y V A N SH O P M A N U A L