Chevrolet 10 Series 1970 Service Manual page 417

PRIMARY
LEAD
F ig . 4 i — D is trib u to r Lead A rrangem ents
the brea k er le v e r spring. If the p ressu re is e x ­
c essive, it can be d ecreased by pinching the
spring ca refu lly.
le v e r must be rem oved from the distribu tor so
the spring can be bent away from
A void e x cess ive spring distortion.
9. Set point opening (.019" fo r new points).
10. R ein stall rotor, position and lock distributor cap to
housing.
L O C A T O R
(R O U N D )
C E N T R IF U G A L
A D V A N C E
M E C H A N IS M
C A M
L U B R IC A T O R
R E P L A C E M E N T
A D J U S T S Q U A R E L Y
A N D JU S T
T O U C H I N G L O B E
O F C A M
F ig . 5 i —Top V ie w o f D is trib u to r
T o in crease p ressu re, the
the le v e r.
R O T O R
L O C A T O R
(S Q U A R E )
C A M
L U B R IC A T O R
C A U T IO N !
N E V E R O IL
C A M L U B R IC A T O R —
R E P L A C E W IC K
W H E N N E C E S S A R Y
11. Start engine and test dw ell and ignition tim ing.
Eight Cylinder Engine Distributor
1. The contact point set is replaced as one com plete
assem bly and only dw ell angle req u ires adjustment
a fte r replacem ent. B reak er le v e r spring tension and
point alignm ent are fa cto ry set.
2„ R em ove the distribu tor cap by placing a screw d r iv e r
in the slot head o f the latch, p re s s down and turn 1/4
turn in eith er direction .
3. Rem ove the two attaching screw s which hold the base
of the contact set assem bly in place.
4. Rem ove the p rim a ry and condenser leads fro m their
nylon insulated connection (fig. 4i) in contact set.
5. R e v e rs e Steps 2, 3 and 4 to install new contact set.
CA UTIO N: Install the p rim a ry and condenser
leads as shown in F igu re 4i. Im proper in sta lla ­
tion w ill cause lead in terferen ce between the
cap, weight base and brea k er advance plate.
6. If car has 20,000
desired ) the cam lu b ricator wick (fig . 5i) should be
changed. Using long nosed p lie r s squeeze assem bly
together at base and lift out. Rem ove a ll old lu b ri­
cant from cam surface.
NOTE: End o f cam lubricant wick should be
adjusted to just touch cam lobes. O ver lu b ri­
cation o f cam resu ltin g in grea se on contact
points can be caused by cam lubrication wick
b earing too hard against cam surface. A c o r ­
re ctly adjusted cam lu bricator wick w ill p rovid e
adequate lubrication fo r cam. Do not apply ad­
ditional g rea se to cam su rface.
7. Start engine and check
tim ing.
F ig . 6 i — In a c c u ra te
ENGINE-ELECTRICAL 6Y-25
to 25,000 m iles (o r sooner if
Replace in same manner.
point dw ell and ignition
G auge o f Rough Points
CHEVROLET TRUCK SERVICE MANUAL