Chevrolet 10 Series 1968, Service Manual

Page: 452 / 713

ENGINE-ELECTRICAL 6Y-27
POINT UNIT CONDENSER
(IEVER & SUPPORT ASSY.)
WASHER GEAR PIN BAND ASSY.
F ig . 14i— G overnor Type Distributor
following the instructions given by the manufacturer
of the test equipment used.
9. Inspect the distributor cap and spark plug wires for
damage and replace if necessary.
Assembly
Four and Six Cylinder Engine
Refer to Figure 12i for Exploded View of Distributor.
1. Replace cam assembly to mainshaft.
NOTE: Lubricate top end of shaft with Delco
cam and ball bearing grease or equivalent prior
to replacing.
2. Install governor weights on their pivot pins, replace
weight springs. Install weight cover and stop plate.
3. Lubricate mainshaft and install it in distributor
housing.
4. Install distributor driven gear to mainshaft and
insert retaining roll pin. Check to see that shaft
turns freely.
5. Install breaker plate assembly in the distributor body
and attach retaining screws.
6 . Attach condenser and contact point set in proper
location with appropriate attaching screws.
NOTE: Contact point set pilot must engage
matching hole in breaker plate. Connect primary
and condenser leads to contact set quick-
disconnect terminal.
7. Attach vacuum control assembly to distributor
housing.
8 . Check and adjust contact point opening and alignment.
(See setting and alignment of points.)
9. Check breaker lever spring tension which should be
19-23 ounces. (See contact point replacement.)
V -8 Engine—(Fig. 13i & 14i)
1. On distributor without governor:
a. F ill housing lubricating cavity with proper com­
pound, press in new plastic seal and install felt
washer.
b. Replace the vacuum advance unit.
c. Install the breaker plate in housing and the spring
retainer on the upper bushing.
2. On distributor with governor install seals and as­
semble governor as follows (figs. 18i and 19i):
a. Insert lower seal through side opening and start
seal straight in bore with lip of seal down.
b. Place a steel disc approximately 15/16" diam­
eter on top of seal. Insert a 7/16" diameter rod
through top of distributor and against disc. Press
seal to bottom of counterbore.
c. Install spring washer on top of seal.
d. Start upper seal in bore with lip of seal up and,
using steel disc and rod, press seal flush with
top of counterbore.
NOTE: Spring should seat on the “ flat” ma­
chined on one side of the mainshaft.
3. Lubricate and slide weight cam over mainshaft and
install weights and spring (fig.
20
i).
4. Insert mainshaft into housing, indexing it with drive
gear and washers.
5. Slide distributor drive gear shims and gear over
shaft and install new pin. Tap new pin through gear
and mainshaft. Check shaft for free rotation. On
heavy duty models, install shock mounting assembly.
CHEVROLET TRUCK SERVICE MANUAL