Plymouth Valiant V-100 1965 Service – Technical Manual page 150

8-6 STARTING MOTOR-DIAGNOSIS
PART 2
STARTING MOTOR
S ERVl C E DIAGNOSIS
Condition Possible Cause Correction
STARTER FAILS TO
(a) Weak battery or dead cell in the battery.
OPERATE
(b)
Ignition switch faulty.
(c) Loose or corroded battery cable terminals.
(d)
Open circuit, wire between the ignition-starter
switch and ignition terminal on the starter relay.
(e) Inoperative clutch unit.
(f)
Faulty starting motor.
(9) Armature shaft sheared.
(h)
Open solenoid pull-in wire.
STARTER FAILS AND
LIGHTS DIM
STARTER TURNS, BUT
PINION
DOES
NOT
ENGAGE
STARTER RELAY DOES
NOT
CLOSE
RELAY OPERATES BUT
SOLENOID DOES
NOT
(a) Weak battery or dead cell in the battery.
(b) Loose or corroded battery cable terminals.
(E)
Internal ground in the windings.
(d) Grounded starter fields.
(e) Armature rubbing on pole shoes.
(a) Starter clutch slipping.
(b)
Broken teeth on the flywheel drive gear.
(c) Pinion shaft rusted, dirty or
dry,
due to lack of
(d)
Wrong starter pinion clearance.
I
ubrication.
(a) Battery discharged.
(b)
Faulty wiring.
(c) Neutral starter switch on automatic transmission
(d)
Starter relay faulty.
faulty.
(a) Faulty wiring.
(b)
Faulty solenoid switch or connections.
(c) Solenoid switch contacts corroded.
(d)
Broken lead or a loose soldered connection
inside the solenoid switch (brush holder
plate).
(a) Test specific gravity. Recharge or replace the
(b)
Test and replace the switch
if
necessary.
(c) Clean terminals and clamps, replace
if
nec-
essary. Apply a
light
film
of
petrolatum to
terminals after tightening.
battery as required.
(d)
Inspect and test all the wiring.
(e) Replace the clutch unit.
(f) Test and repair as necessary.
(g) Test and repair.
(h)
Test and replace the solenoid
if
necessary.
(a) Test for specified gravity. Recharge or replace
the battery as required.
(b)
Clean the terminals and clamps, replace
if
necessary. Apply a
light
film of petrolatum to
the terminals after tightening.
(c) Test and repair the starter.
(d)
Test and repair the starter.
(e) Test and repair the starter.
(a) Replace the clutch unit.
(b)
Replace the flywheel ring gear. Inspect the
(c) Clean, test and lubricate.
teeth on the starter clutch pinion gear.
(d) Adjust pinion clearance on straight-thru drive
starters.
(a) Recharge or replace the battery.
(b) Test for open circuit, wire between the starter
relay ground terminal post and neutral starter
switch (automatic transmission only).
Also
test
for open circuit; wire between the ignition-
starter switch and ignition terminal and starter
relay.
(c) Test and replace the switch
if
necessary.
(d)
Test and replace
if
necessary.
(a) Test for open circuit wire between the starter-
relay solenoid terminal and solenoid terminal
post.
(b)
Test for loose terminal connections between the
(c) solenoid and the starter field.
(d) Test and replace the solenoid
if
necessary.