Chevrolet 30 Series 1967 Service Manual page 378

ENGINE—ELECTRICAL—6Y-30
ROTOR
F ig . 2 3 i—Magnetic Pulse Distributor Components
CENTRIFUGAL
ADVANCE
ROTATING
POLE PIECE
STATIONARY
POLE PIECE
MAGNETIC
PICKUP
ASSEMBLY
DISTRIBUTOR
HOUSING
RESISTOR R5
TRANSISTOR TR2
(UNDERNEATH)
CAPACITOR Cl
MOUNTING
SCREW
TRANSISTOR TR3
Fig . 24i—Pulse A m p lifier Panel Board
. Remove retaining ring which secures magnetic core
8
support plate to distributor shaft bushing in housing.
9. As a unit, remove the entire magnetic pick-up
assembly from the distributor housing.
10. Remove brass washer and felt pad.
NOTE:
Before removing plastic seal, refer to
instructions provided earlier in this article.
11. If necessary to replace the mainshaft seals refer to
the procedures previously described.
12. To reassemble distributor, perform the above steps
in reverse order.
INSTALLATION
1. Check to see that the engine is at firing position for
No. 1 cylinder (timing mark on harmonic balancer
indexed with pointer).
2. Position a new distributor-to-block gasket on the
block.
3. Before installing distributor, index rotor with hous­
ing as noted when distributor was removed.
4. Replace distributor
enough to allow distributor to be turned for timing
adjustment.
5. Install spark plug wires in distributor cap. Place
wire for No. 1 cylinder in tower (marked on old cap
during disassembly) then install remaining wires
clockwise around the cap according to the firing
order (1 -8 -4 -3 -6 -5 -7 -2 ).
. Attach distributor to coil primary wires.
6
7. Replace distributor cap.
. Attach governor vacuum and air intake lines to
8
distributor.
9. Adjust timing and then fully tighten distributor clamp
screw.
MOUNTING
SCREW
DIODE D1
TRANSISTOR TR1
(UNDERNEATH)
SCREW
R1
C3
CAPACITOR C2
clamp leaving screw loose
CHEVROLET TRUCK SERVICE MANUAL