Chevrolet 30 Series 1967 Service Manual page 377

Fig . 21 i —Six C y lin d e r Engine Distributor
a. Remove No. 1 spark plug and, with finger on plug
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
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 (fig.
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
F ig . 2 2 i—Eight C ylin d e r Engine Distributor
engines)
- 8
i and i), noting position of
2 1 2 2
turn
1 / 8
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.
4. While pressing firmly down on distributor housing,
kick starter over a few times to make sure oil
pump shaft is engaged. Install hold-down clamp and
bolt and snug up bolt.
Turn distributor body slightly until points just open
5.
and tighten distributor clamp bolt.
. Place distributor cap in position and check to see
6
that rotor lines up with terminal for No. 1 spark
plug.
.
7 Install cap, check all high tension wire connections
and connect spark plug wires if they have been
removed. It is important that the wires be installed
in their location in the supports.
NOTE: The brackets are numbered to show the
correct installation. Wires must be installed as
indicated to prevent cross firing.
. Connect vacuum line to distributor and distributor
8
primary wire to coil terminal.
9. Start engine and set timing as described under
Turn-Up in Section .
6
MAGNETIC PULSE DISTRIBUTOR (Fig. 23i)
REMOVAL
1. Disconnect pick-up coil leads at connector.
2. Remove distributor cap.
3. Crank engine so rotor is in position to fire No. 1
cylinder and timing mark on harmonic balancer is
indexed with pointer.
4. Disconnect air intake and governor vacuum lines
from distributor.
Remove distributor clamping screws and hold-down
5.
clamp.
. Remove distributor and distributor-to-block gasket.
6
It will be noted that the rotor will rotate as the dis­
tributor is pulled out of the block. Mark the rela­
tionship of the rotor and the distributor housing
after removal so that the rotor can be set in the
same position when the distributor is being installed.
DISASSEMBLY
1. Remove screws securing rotor and remove rotor.
2. Remove centrifugal weight springs and weights.
3. Remove cover band and spinner valve assembly. Be
sure to note the revolutions needed to remove the
nut from the spinner valve.
4. Remove pin (file or grind end of pin) retaining driven
gear, then remove distributor gear, washer and shock
mounting assembly from shaft.
CAUTION:
To prevent damage to the perma­
nent magnet, support drive gear when driving
out gear retaining pin.
Remove drive shaft assembly. Check for and remove
5.
burrs on the shaft to prevent damage to seals and
bushing still positioned in housing.
. Remove centrifugal weight support and timer core
6
from drive shaft.
.
7 Remove connector from pick-up coil leads.
ENGINE-ELECTRICAL 6Y-29
CHEVROLET TRUCK SERVICE M ANUAL