Chevrolet 10 Series 1968, Service Manual

Page: 454 / 713

ENGINE-ELECTRICAL 6Y-29
LOW ER
SEAL
SEA L
R EM O V A L
PU N CH
H O U S IN G
F ig . 17i—Removing Lower Seal
and install cap. Also install spark plug and high
tension wires if removed.
NOTE:
It is important that the spark plug
wires be installed in their proper location in the
supports (fig. 23i).
4. Time ignition as previously described under Tune-Up
in Section
6
.
Installation—Engine Disturbed (All Models)
1. Locate No. 1 piston in firing position by either of
two methods described below.
a. Remove No. 1 spark plug and, with finger on plug
F ig . 19 i—Distributor Governor Assembly
ARBOR PRESS RAM
SPRING
WASHE
HOUSING
F ig . 18i — I nsta 11 i ng Seals in G overnor Distributor
hole, crank engine until compression is felt in the
No. 1 cylinder. Continue cranking until timing
mark on crankshaft pulley lines up with timing
tab attached to engine front cover,
b. Remove rocker cover (left bank on V -8 engines)
and crank engine until No. 1 intake valve closes
and continue to crank slowly about 1/3 turn until
timing mark on pulley lines up with timing tab.
2. Position distributor to opening in block in normal
installed attitude (figs. 2 li and 22 i), noting position
of vacuum control unit.
3. Position rotor to point toward front of engine (with
distributor housing held in installed attitude), then
turn rotor counter-clockwise approximately
1/8
turn
more toward left cylinder bank and push distributor
down to engine camshaft. It may be necessary to
rotate rotor slightly until camshaft engagement is
felt.
O VER R U N
ST O P
LATCH
BALLAST
WEIGHT
RUBBER
CUSHION
VALVE
SHAFT
ADJUSTING
NUT
RETURN
SPRING
SEALS
PASSAGE
DISTRIBUTOR
MAIN SHAFT
CHEVROLET TRUCK SERVICE MANUAL