Ssi Distributor Components—Typical - Jeep J-10 Series 1982 Technical & Service Manual

RETAINER _ PICKUPCOIL
.^s^T, ASSEMBLY
VACUUM
ADVANCE
MECHANISM
70867
Rg. 16-16 SSI Distributor Components—Typical
(4) Remove trigger wheel with trigger wheel puller
J-28509, or equivalent. Use flat washer to prevent puller
from contacting inner shaft. Alternately, two screw
drivers can be used to remove trigger wheel from shaft.
Remove pin.
(5) Six-cylinder engine—remove pickup coil re
tainer and washers from pivot pin on base plate.
(6) Eight-cylinder engine—remove pickup coil snap
ring from central shaft. Remove retainer from vacuum
advance mechanism-to-pickup coil drive pin and move
vacuum advance mechanism lever aside.
(7) Remove ground screw from harness tab.
(8) Lift pickup coil assembly from distributor
housing.
(9) If vacuum advance mechanism is to be replaced,
remove screws and lift unit out of distributor housing.
Do not remove vacuum advance mechanism unless re
placement is required.
Installation
(1) If vacuum advance mechanism was removed,
install it on distributor housing with attaching screws.
NOTE: If replacement vacuum advance mechanism is
installed, refer to Vacuum Advance Mechanism for cali
bration procedure.
IGNITION SYSTEMS 1G-27
(2) Position pickup coil assembly into distributor
housing.
(3) Ensure pin on pickup coil is inserted into hole in
vacuum advance mechanism link (six-cylinder engines).
Attach vacuum advance mechanism lever and retainer
to pickup coil pin (eight-cylinder engines).
(4) Install washers and retainer onto pivot pin to
secure pickup coil assembly to base plate (six-cylinder
engines). Install snap ring (eight-cylinder engines).
(5) Position wiring harness in slot in distributor
housing. Install ground screw through tab and tighten.
(6) Install trigger wheel on shaft with hand pres
sure. Long portion of teeth must be upward. When trig
ger wheel and slot in shaft are properly aligned, use
suitable drift and small hammer to tap pin into locating
groove in trigger wheel and shaft. If distributor is not
installed in engine, support shaft while installing trigger
wheel pin.
(7) Install rotor. Install distributor cap.
Vacuum Advance Mechanism
Removal
(1) Remove vacuum hose from vacuum advance
mechanism.
(2) Six-cylinder engine—remove attaching screws
and remove vacuum advance mechanism from distribu
tor housing. It is necessary to tilt mechanism to dis
engage link from pickup coil pin protruding through
distributor housing. It may be necessary to loosen base
plate screws for necessary clearance.
(3) Eight-cylinder engine—remove distributor cap.
Remove retainer from pickup coil pin. Remove attaching
screws and lift vacuum advance mechanism from dis
tributor housing.
Installation
(1) If replacement vacuum advance mechanism is to
be installed, calibrate according to following procedure.
(a) Insert Allen wrench into vacuum hose fit
ting of original vacuum advance mechanism. Count
number of clockwise turns necessary to bottom adjust
ment screw.
(b) Turn adjustment screw of replacement vac
uum advance mechanism clockwise to bottom. Turn
counterclockwise same number of turns counted in step
(a).
(2) Six-cylinder engine—install vacuum advance
mechanism on distributor housing. Ensure that vacuum
advance link is engaged with pickup coil pin. Install
retaining screws. Tighten base plate screws, if loosened.
(3) Eight-cylinder engine—install vacuum advance
mechanism on distributor housing. Install retaining
screws. Position vacuum advance lever onto pickup coil
pin and install retainer. Install distributor cap.