Jeep UNIVERSAL CJ-2A - Page 147

I
ELECTRIC AL SYSTE M
is not over 100,000 ohms, the secondary is grounde d
to the cover.
d . If the secondary w inding is sat i sfactory, mea -
s ur e the pr i mary current draw in accordance wi th
the i nstruct i ons of the tes t equ i pment manu -
facturer.
e. Che ck the secondary circuit for leakage. With
the coil primary in the ci rcu it with the breaker u ni t
of the tester, connect a long, high-te n sion test lead
to the coil tower. Check the secondary circuit for
leakage by performing the checks given in steps
f, g, h, and i following.
Not
e: In the following tests, a s li ght sparking an d
meter deflection will us u ally be seen just as contact
is mad e. This is caused by capacitance and does no t
indicate defective insulation.
f . Check distribu tor ca p. R emove the coil lead from
the cap and to u ch the test lead to the center co n tac t
inside
the cap. If the meter reading drops when the
contact is touched or if sparking is seen , a leakage
path is present between the center contact and one
of the plug towers . This leakage path will be in the
form of a cr ack or car bon track in the cap. Di s con -
nect the spark plug wires from the cap one at a
146
FIG. 1 66 - PARI<ING LIGHT
1 Bezel
2- L<:ns
3- Bul b
~ - Casket
5- Hous in& ond Cab le
6 -
Scrcw
2
time and test each piug contact with the high -
voltage lead and with all other plug wires con-
nected . Any sparking or meter dr op indica tes t hat
a leakage path ex i sts between that partic ular con-
tact and an adjacent on e. Testing the adjacen t
contacts will determine which pair is at fault.
g. Check distributor rotor. Touch the test lead to
the
spring contact in the center of the dis tr ibu tor
r otor. A ny leakag e in th e roto r insulation between
the contact and the shaft will cause a drop in the
meter reading and usually sparking wi ll be see n.
h. Check spark plug wires. Di s conne ct the spark
pl ug wires fr om the pl ugs and test the plug terminal
of each. The meter readin g should no t drop below
the open seco n dary val ue (value before makin g
contact). If it does or if a large s park occurs whe n
the test lead and t he pl ug wire are separated , there
is a break in th e in sul ation on that wire.
i. Check the coil tower insulat i on. Remove the
high-tension test lead from the coil tower and touch
the ground lead of the coil tester to several point s
around the base of the tower. Any sparking or
deflection of the me ter i ndi ca tes a l eakage path in
· the tower insulation.
10641
1 0790
FIG . 1 67 - TAIL AN D STOP LI GH T
1- Rinc
2- Lcns
3- 0oskct
4- Rc tainer
s - Bulb
6- 0askct
?- Housi ng nnd Socket