Chevrolet 10 Series 1968, Service Manual

Page: 451 / 713

E N G IN E -E LE C TR IC A L 6 Y -2 6
F ig . 13i—V - 8 Distributor (T yp ica l)
1. Condenser
2. Contact Point Assembly
2a. Cam Lubricator
3.
Retaining Ring
4. Breaker Plate
5.
5a
6
.
7.
Felt Washer
P lastic Seal
Vacuum Advance
Unit
Housing
plate. Remove the felt washer and plastic seal lo­
cated beneath the breaker plate.
NOTE:
Governor type distributors have no
breaker plate. The contact point assembly and
condenser are attached directly to the distribu­
tor housing.
8 . On distributor with governor remove main shaft
seals as follows:
a. With punch shaped as shown in Figure 15i reach
up through the bottom of housing and insert edge
of punch between upper and lower seals and push
upper seal out.
b. Insert suitable punch into vacuum hole as shown
in Figure 16i and loosen lower seal by denting one
side slightly.
c. A fter lower seal has been loosened, use the
special punch shown in Figure 17i to push out
seal.
Cleaning and Inspection
1. Wash all parts in cleaning except cap, rotor, con­
8. Shim Washer
9o Drive G e a r Pin
10. D rive G e a r
11» C a p
12. Rotor
13. W eight Springs
14. M ainshaft
15. Advance Weights
16. Cam W eight
Base Assembly
denser, breaker plate assembly and vacuum control
unit. Degreasing compounds may damage insulation
of these parts or saturate the lubricating felt in the
case of the breaker plate assembly.
2. Inspect the breaker plate assembly for damage or
wear and replace if necessary.
3. Inspect the shaft for wear and check its fit in the
bushings in the distributor body. If the shaft or
bushings are worn, the parts should be replaced.
4. Mount the shaft in
“ V ”
blocks and check the shaft
alignment with a dial gauge. The run-out should not
exceed . 002 ” .
5. Inspect the advance weights for wear or burrs and
free fit on their pivot pins.
6 . Inspect the cam for wear or roughness. Then check
its fit on the end of the shaft. It should be absolutely
free without any roughness.
7. Inspect the condition of the distributor points. Dirty
points should be cleaned and badly pitted points
should be replaced. (See Distributor Contact Points.)
8 . Test the condenser for series resistance, m icro­
farad capacity (.18 to .23) and leakage or breakdown,
CHEVROLET TRUCK SERVICE MANUAL