Owners manual
Electronic Distributor 1941-71 MB - CJ
(134 – 4cyl) 12 Volt system only
P/N: 923068 (17239.01)
Installation Instructions
Distributor includes the following items.
(1) Distributor with electronic pick-up and control module
(1) Distributor cap
(1) Distributor Rotor.
PLEASE NOTE: This distributor has been desi
g
ned for use with a
12 volt s
y
stem onl
y
. This distributor will not work with a 6 volt
or a 24 volt s
y
stem found in earl
y
CJ's, M38 and the M38-A1
Before starin
g
en
g
ine make sure that a resistor has been installed. This can
either be an external ballist resistor or a coil with an internal resistor.
The distributor has been desi
g
ned to look like the ori
g
inal OE points
t
y
pe distributor from the outside. This includes the addition of the
external oilin
g
cup. This modern distributor has self lubricatin
g
bearin
g
s and does not need to be oiled like the ori
g
inal unit.
This cup has been added for looks onl
y
!
Step 1: Remove the sparkplug wires from old distributor.
Make note that the firing order for the distributor
is 1-3-4-2. DO NOT REMOVE plug wires from
spark plugs at this time. It will help if you mark these
wires in relation to there firing sequence.
Step 2: Disconnect the old distributors wires.
Remove the old distributor per shop manual
instruction.
Step 3: Reinstall the new distributor as referenced per
vehicle shop manual.
NOTE: because there is a possibility of the oil pump
shaft and distributor drive gear not being in
the true original timing orientation it will be necessary
to reset your timing when the distributor is reinstalled.
This distributor may not be set to the same timing orientation
as the unit it is replacing. Spark plug wire placement to
cap may differ depending on the relation of the rotor to No.1
pistons (Dead Top Center) on the compression stroke.
NOTE: Some models may have
s
li
g
ht
var
i
a
ti
ons regar
di
ng w
i
re
Step 4: Install lead wires from new distributor to coil.
l
oca
ti
on an
d h
oo
k
up.
Pl
ease
The drawing to the right shows the most common wiring use a qua
lit
y s
h
op manua
l
arrangements for the 134 4cyl motor (12volt). spec
ifi
c
f
or your year an
d
mo
d
e
l
Depending on date of manufacture for the new distributor
f
or correc
t
w
i
re connec
ti
on an
d
the wiring codes are:.
ti
m
i
ng spec
ifi
ca
ti
ons.
Th
e
i
n
f
orma
ti
on
RED = Positive , BLACK = Negative presen
t
e
d h
ere are
f
or genera
l
OR re
f
erence on
l
y.
Black = Positive, BLUE = Negative
An externa
l
res
i
stor w
ill b
e nee
d
e
d if
use
d
w
i
t
h
a stan
d
ar
d
co
il
. A co
il
w
i
t
h
an
i
nterna
l
res
i
stor can a
l
so
b
e use
d
.
Step 5: After installing distributor it will be necessary to reset the timing REPLACEMENT PARTS:
to t
h
e new
di
str
ib
utor.
To locate the firing position of No.1 piston, first remove Distributor Cap: (17244.02)
No.1 spark plug and turn the engine until No.1 piston
is moving up on the compression stroke. This will be evident Distributor Rotor: (17246.02)
due to the compression pressure being forced through
the spark plug opening. I
g
nition Module: (17252.05)
If distributor cap is installed remove and note orientation of
rotor head. It will now be pointing to the No.1 position
Reinstall the sparkplug wires in the 1-3-4-2 fire order.
Please refer to shop manual for proper timing information.
REVISED 1/27/09