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1500
1500
r. r.p.
p.m.
tributor wear.
tributor wear.
Dwell and gap of the points must both be
Dwell and gap of the points must both be
within their specified tolerance at
within their specified tolerance at
time. If this
time. If this
probable that the
probable that the
the cam lobes
the cam lobes
or
or
7. 7. IGNITION TIMING
IGNITION TIMING
To obtain maximum engine performance, the dis-
To obtain maximum engine performance, the
tributor must be correctly positioned to give proper
tributor must be correctly positioned to give proper ig- ig-
nition
nition timing.
timing.
The ignition timing test will indicate the timiig of
The ignition timing test will indicate the timiig of
the spark at the No. 1 piston at idle (only).
the spark at the No. 1 piston at idle (only).
( ( 1) Disconnect the vacuum line at the distributor.
1) Disconnect the vacuum line at the distributor.
This will eliminate any chance of vacuum advancing
This will eliminate any chance of vacuum advancing
the breaker arm plate. The engine should operate on
the breaker arm plate. The engine should operate on
centrifugal advance only when checking the ignition
centrifugal advance only when checking the ignition
timing.
timing.
(2) Connect the secondary lead of the Power Timing
(2) Connect the secondary lead of the Power Timing
Light to No. 1 spark plug, red primary lead to the
Light to No. 1 spark plug, red primary lead to the posi-
tive terminal of the battery and the black primary lead
tive terminal of the battery and the black primary lead
to the negative battery terminal.
to the negative battery terminal.
(3) Start the engine and set the idle to
(3) Start the engine and set the idle to 475-500
engine at normal operating temperature (transmission
engine at normal operating temperature (transmission
in neutral).
in neutral).
(4) Using a timing light, observe the position of
(4) Using a timing light, observe the position of
timing mark on the crankshaft dampener and check
timing mark on the crankshaft dampener and check
against the specifications.
against the specifications.
(5 (5) ) Loosen the distributor clamp screw and rotate
Loosen the distributor clamp screw and rotate
the distributor housing so that the specified timing mark
the distributor housing so that the specified timing mark
and pointer are in alignment. (Moving distributor
and pointer are in alignment. (Moving distributor
ing against shaft rotation advances timing and with
ing against shaft rotation advances timing and with
shaft rotation retards timing).
shaft rotation retards timing).
(16) Tighten the distributor clamp screw after the
(16)
Tighten the distributor clamp screw after the
timing has been set and recheck timing adjustment
timing has been set and recheck timing adjustment
with a Power Timing Light.
with a Power Timing Light.
(7) When the spark timing is correct, reconnect the
(7) When the spark timing is correct, reconnect the
line to the distributor.
line to the distributor.
vacuum
vacuum
NOTE:
NOTE: As t
timing mark should move down on the vibra- a-
timing mark should move down on the vibr
tion dampener below the pointer
tion dampener below the pointer if if advance
units are functioning.
units are functioning.
8.
8.
DISTRIBUTOR
DISTRIBUTOR
(1) Disconnect the vacuum line at the distributor.
(1) Disconnect the vacuum line at the distributor.
does not necessarily indicate dis-
does not necessarily
m.
IMPORTANT
IMPORTANT
be accomplished. it is
be accomplished. it is
cannot
cannot
points
points
wrong
wrong
badly
badly
are
are
worn.
worn.
As the e
he engine
ngine speed is increased, the
speed is increased, the
REMOVAL
REMOVAL
DIAL
DIAL INDIC
INDICAT
AT OR
OR
(6) Carefully lift the distributor from the engine.
(6) Carefully lift the distributor from the engine.
indicate dis-
9. DISASSEMBLY OF DISTRIBUTORS (Fig. 1) 1)
9. DISASSEMBLY OF DISTRIBUTORS (Fig.
(1) Remove the distributor rotor.
(1) Remove the distributor rotor.
the same
the same
NOTE: The distributor
NOTE: The distributor
held in place by
held in place by
are
are
installed
installed
are
are
around
around
moved.
moved.
(2) Remove the retainer attaching the vacuum
(2) Remove the retainer attaching the vacuum con-
trol unit to the breaker plate advance arm.
trol unit to the breaker plate advance arm.
dis-
(3) Remove the two screws and lo&washers at-
(3) Remove the two screws and lo&washers at-
taching the vacuum control unit to the distributor hous
taching the vacuum control unit to the distributor hous
ing and remove the control unit.
ing and remove the control unit.
(4) Remove primary lead wire and rubber grommet
(4) Remove primary lead wire and rubber grommet
as an assembly.
as an assembly.
(5) Remove the two screws and lo&washers
(5) Remove the two screws and lo&washers at at- -
taching
taching the breaker plate to housing and lift out the
breaker plate, points and condenser as an assembly.
breaker plate, points and condenser as an assembly.
(6) Remove the oil wick from the distributor cam.
(6) Remove the oil wick from the distributor cam.
Remove the spring clips from the oil well in cam (Fig.
Remove the spring clips from the oil well in cam (Fig.
2) and remove the cam and yoke assembly and spacer.
2) and remove the cam and yoke assembly and spacer.
posi-
(7) Clamp the ribbed section of the distributor
(7) Clamp the ribbed section of the distributor hous-
ing in a vise equipped with soft jaws and attach the
ing in a vise equipped with soft jaws and attach the
dial
dial indicator
indicator to to the
with
with
indicator
indicator
475-500 r.p.m.,
r.p.m.,
cam sleeve.
cam sleeve.
(6) Hook the F F
(6) Hook the
sleeve and pull on a line with tne phmger
sleeve and pull on a line with tne
hous-
hous-
advance
cap
cap
peening
peening
openings
openings
should not
should not
the
the
and
and
the breaker plate to housing and lift out the
the body of the distri
body of the distribut
plc
plc
mger
mger resting
agamsr
agamsr
resting
Jprmg scale in the bore of the cam
Jprmg
scale in the bore of the cam
r: r:
., .,
Z-Ren
Z-Ren
Fig.
Fig.
loving or Installing Distributor
loving or Installing Distributor
Cam Felt Wick
Cam Felt Wick
clamp
clamp
springs
springs
the metal
the metal
re re- -
be
be
con-
hous-
butor (Fig. 3)
or (Fig. 3)
me
me
alstrimuor
alstrimuor
., .,
. .
, , . . . .
phmger or the
or the
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