5-5
Table 5-1. Troubleshooting
PROBLEM
SOURCE OF
PROBLEM
PROBABLE CAUSE SOLUTION
1. Starter does
not run or runs
at very low
speeds.
1.1 Battery. 1.1.1 Voltage drop due to
discharged battery.
1.1.2 Short-circuited or open
between electrodes.
1.1.3 Poor contact condition of
battery terminal(s).
1.1.1 Charge battery.
1.1.2 Replace battery.
1.1.3 Clean and retighten.
1.2 Wiring. 1.2.1 Disconnection between
starter switch and solenoid
terminal.
1.2.1 Repair or replace wire.
1.3 Starting
switch or
starter relay.
1.3.1 Poor contact condition or
poor connection.
1.3.1 Replace.
1.4 Solenoid. 1.4.1 Poor contact condition.
caused by burnt contact.
1.4.2 Contact plate removed.
1.4.3 Pull-in winding open or short-
circuited.
1.4.4 Hold-in winding open.
1.4.1 Polish contact surface or
replace solenoid assembly.
1.4.2 Repair.
1.4.3 Replace solenoid assembly.
1.4.4 Replace solenoid assembly.
1.5 Starting motor. 1.5.1 Poor contact condition of
brushes.
1.5.2 Commutator burnt.
1.5.3 Commutator high mica.
1.5.4 Field winding grounded.
1.5.5 Armature winding grounded
or short-circuited.
1.5.6 Reduction gears damaged.
1.5.7 Insufficient brush spring
tension.
1.5.8 Disconnected lead wire
between solenoid and field
windings.
1.5.9 Ball bearing sticks.
1.5.1 Check brush spring tension.
1.5.2 Correct on lathe or replace.
1.5.3 Correct by undercutting.
1.5.4 Replace.
1.5.5 Replace.
1.5.6 Replace.
1.5.7 Replace.
1.5.8 Repair or replace lead wire.
1.5.9 Replace bearing.
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