Chevrolet 10 Series 1970 Service Manual page 410

ENGINE-ELECTRICAL 6Y-18
F ig . 20c — Lead A rra ngem ent A fte r Assembly
6. R earran ge leads as shown in Figure 20c with right-
hand brush lead connected
hex-head stud.
7. Attach term in al c o v e r with two screw s, making sure
leads are not taught underneath the c over.
DOUBLE CONTACT REGULATOR
W hile m ost regu lar adjustments a re made on the veh i­
cle as outlined under "M aintenance and A d ju stm en ts",
the regu lator may be rem oved fo r field re la y point and
a ir gap adjustment. H ow ever, voltage regulating contacts
should n ever be cleaned as they are
m a teria l that may be d estroyed by cleaning with any
a b ra siv e m aterial.
NOTE: A sooty o r d iscolored condition o f the
contacts is norm al
p eriod o f operation.
P O IN T O P E N IN G 1
F ig . 2 1 c —C h e c k in g F ie ld Relay P oint O p e n in g
under the right hand
made of special
a fte r a re la tiv e ly short
Removal and Installation
T o rem ove the regulator assem bly, disconnect the bat­
te ry ground cable and the w irin g harness connector at the
regu lator, then rem ove the sc rew s securing the regu lator
to the veh icle.
E le c tr ic a l settings must be checked and adjusted a fter
making m echanical adjustments. B efore installing regu ­
la tor c o v e r, make sure the rubber gasket is in place on
the regu lator base.
M echanical Adjustments
NOTE: Only an approxim ate voltage regulator
a ir gap setting should be made by the " f e e l e r
ga u ge" method.
Field Relay Adjustment
1. Point Opening: The point opening is checked as i l ­
lustrated in Figure 21c. If adjustment is necessary,
ca refu lly bend the arm ature stop.
2. A ir Gap: Check the a ir gap with the points just
touching (fig. 22c). The a ir gap norm ally need not be
adjusted. If the point opening and closin g voltages
are within specification s,
sa tis fa c to rily even though the a ir gap may not be
exactly according to specification s.
n ecessary, bend the flat contact spring.
AIR GAP
(Check W ith Points
Just Touching)
F ig . 2 2 c —C h e ckin g F ie ld Relay A ir G ap
the rela y w ill operate
If adjustment is
CHEVROLET TRUCK SERVICE MANUAL