ENGINE DIVISION SERVICE MANUAL
CLEANING AND INSPECTION
Wash metal parts in cleaning solvent.
Do Not wash cap, rotor, vacuum advance
diaphragm assembly or electronic control unit.
It is permissible to soak the distributor housing if
the bushings are to be replaced. If bushings are
not to be replaced, clean distributor housing
carefully so as not to wash oil from bushings.
Inspect distributor shaft for wear and check its fit in
bushings in distributor housing. If shaft and bushings
are worn, replace them.
Mount distributor shaft in "V" blocks and check shaft
alignment with dial indicator. Runout should not
exceed 0.05mm (.002").
Inspect mechanical advance weights for free fit on their
pivot pins and in slots of trigger wheel yoke without
excessive looseness. If wear or damage is found,
replace distributor shaft assembly.
Inspect trigger wheel teeth for damage. Check fit of
trigger wheel assembly on distributor shaft. It should
be free without roughness. If roughness or excessive
looseness exists, replace distributor shaft assembly.
Inspect sensor advance plate of electronic control unit.
1. binding or wear of pivot pin is indicated, replace
control unit assembly.
tachometer drive parts. (See Tachometer Drive
Inspect rotor, distributor cap and high tension cables.
(See Secondary Circuit Inspection Under IGNITION
SYSTEM TROUBLE SHOOTING TEST.)
DISTRIBUTOR HOUSING BUSHING REPLACEMENT
The following procedures can be followed to remove
and replace the distributor shaft bushings in the distributor
housing. Distributor tool set SE-1955 will assist in performing
Illustrations show bushing removal and installation
operations being performed on distributor without tachometer
drive. Procedures for distributors with tachometer drive are
On distributors without tachometer drive, use a small
screwdriver to pry upper bushing grease retainer
washer from distributor housing (Figure 23).
Fig. 23 Removing Grease Retainer Washer (Distributors
Without Tachometer Drive)
2. Grease Retainer
On distributors for V-537 engine, use a screwdriver to
pry oil seal out of lower end of distributor housing
CGES-145-U Page 12
PRINTED IN UNITED STATES OF AMERICA