Hudson 1948 - 1952, Service Manual

Page: 159 / 333

ELECTRICAL SYSTEM 6 - 23
Installation:
1. Line up the first line before the UDC mark on the
flywheel with the pointer on the flywheel housing, Figure
21, with No. 1 cylinder on compression stroke.
2. Set distributor rotor to point to No. 1 contact in the
distributor cap, Figure 20.
3. Insert and engage distributor shaft in slot in oil pump gear.
4. Insert lock plate; hold down screw attaching distributor
quadrant to engine. Set distributor midway on the quadrant
and tighten screw.
5. Replace distributor cap, secondary wire and spark plug
wires, Figure 20.
6. Place three to five drops of engine oil in shaft oiler and
adjust timing.
For distributor testing, see Engine Tune-Up section,
pages 2-9 through 2-11.
FIGURE 20
IGNITION TIMING
For average operating conditions both 8 and 6 cylinder
engines should be set to fire at top dead center of the
compression stroke at cranking speed. When the long mark
before the UDC on the flywheel is lined up with the pointer,
No. 1 piston is at top dead center.
The timing is advanced by rotating the distributor
counter-clockwise. Clockwise rotation of the distributor
retards the spark.
Ignition timing may be accurately set by using a neon
timing light. Connect the timing light as recommended
by manufacturer. Mark the long line on the flywheel
(Figure 21) with white chalk and loosen' the screw
attaching distributor quadrant to engine. Operate the
engine at idle speed with the timing Light aimed at the
flywheel opening and rotate the distributor until chalk
mark lines up with the pointer. Tighten the quadrant
screw and accelerate the engine. Chalk mark should
move to the left of pointer as centrifugal governor ad-
vances the spark.
To set the timing without a timing light, remove No.
1 spark plug and crank engine until No. 1 piston starts
up on compression stroke. Continue cranking until long
line on flywheel lines up with pointer. Loosen distribu-
tor quadrant screw and rotate distributor clockwise to
the limit of the slot in the quadrant. Remove secondary
wire from center of distributor cap and hold bare end of
wire about 1/8" from the cylinder head. With ignition
switch on, slowly rotate the distributor counter-clock-
wise just until a spark jumps from the wire to the
cylinder head; then tighten quadrant screw.
FIGURE 21