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DISTRIBUTORS 6D5-1
SECTION 6D5
DISTRIBUTORS
N O T IC E : W h en fa s te n e rs a re re m o v e d ', a lw a y s r e ln s ta llth e m a t th e s a m e lo c a tio n fro m w h ic h th e y w e re
re m o v e d . I f a fa s te n e r n e e d s to b e re p la c e d , u s e th e c o rre c t p a r t n u m b e r fa s te n e r fo r th a t a p p lic a tio n . I f
th e c o rre c t p a r t n u m b e r fa s te n e r is n o t a v a ila b le , a fa s te n e r o f e q u a l s iz e a n d s tre n g th (O r s tro n g e r) m a y
b e u s e d . F a s te n e rs th a t a re n o t re u s e d , a n d th o s e re q u irin g th re a d lo c k in g c o m p o u n d w ill b e c e ile d o u t.
T h e
|c o rre c t to rq u e v a lu e m u s t b e u s e d w h e n In s ta llin g fa s te n e rs th a t re q u ire I t I f th e a b o v e c o n d itio n s
a re n o t fo llo w e d , p a rts o r s y s te m d a m a g e c o u ld re s u lt.
CONTENTS
SUBJECT
RAGE
P o l e P i e c e a n d C o i l A s s e m
b l y . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 D 5 - 1
DELCO REMY DISTRIBUTORS
GENERAL DESCRIPTION
Distributors with separate coils are used on medium
duty fruck engines (figure 1). The ignition coil connects
to the distributor cap through a high tension wire.
The distributor uses an internal magnetic pickup
assembly that consists of a permanent magnet, pole
piece| with internal teeth, and pickup coil. When the
rotating teeth of the timer core line up with the teeth of
the pole piece, voltage is induced in the pickup coil.
This yoltage signals the ignition control module to trig
ger the primary ignition circuit. Current flow in the pri
mary | circuit is interrupted and a high voltage of up to
35.0CI0 volts is induced in the ignition coil secondary
winding. This high voltage is directed through the sec
ondary ignition circuit to fire the spark plugs.
The magnetic pickup assembly is mounted over the
main bearing on the distributor housing. The electronic
module within the distributor automatically controls the
dwell period.
The part number (seven digits) is located on a label
on thb distributor cap.
IGNITION COIL
The coil is built like a transformer with the winding
surrounded by a laminated iron frame. It generates a
high Secondary voltage (up to 35,000 volts) when the
primairy circuit is broken. It is connected to the distribu
tor by a secondary wire and two primary wires.
IGNITION CONTROL MODULE
The ignition control module is a solid state unit con
taining many complete circuits. The circuits control
spark triggering, switching, current limiting, dwell con
trol, and distributor pickup. The vehicle's computer
sends signals to the module to control dwell and spark
timing. The module may have seven or eight terminals,
depending on the ignition system.
POLE PIECE AND COIL ASSEMBLY (Figure 2)
The pole piece and plate assembly (often referred to
as the pickup coil assembly) consists of a stationary
pole piece with internal teeth and a pickup coil. A mag
netic timer core is mounted on the distributor shaft.
DISASSEMBLY
«»►
Remove or Disconnect (Figure 3)
Any time the distributor is disassembled, the retainer
(49) must be replaced. Do not attempt to reuse the old
retainer.
1. Screws (25) holding the cap to the housing.
2. Cap (23) from the housing.
• Place marks on the rotor and the shaft assembly to
help line up the rotor during assembly.
3. Rotor (10) from the shaft by lifting or prying straight
up.
Summary of Contents for C Series 1993
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