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3-2
INDICATION/TROUBLE
POSSIBLE CAUSES
REFERENCE
SECTION
3.1.3
Starter Motor Malfunction (CONTINUED)
Starter motor turns but pinion
does not engage
Pinion or ring gear obstructed or worn
Clean both,
remove burrs,
or replace;
apply grease
Starter motor does not
disengage after switch was
depressed
Start switch defective
Starter solenoid defective
Replace
Engine Manual
Pinion does not disengage after
engine is running
Defective starter
Engine Manual
3.1.4
Malfunction in the Engine Starting Circuit
No power to starter motor
solenoid
Battery Defective
Loose electrical connections
Check
Tighten
Fuel solenoid does not
energize or does not remain
energized
Battery Defective
Loose electrical connections
Oil pressure safety switch defective
Run relay defective
Water temperature cut out defective
Fuel solenoid defective
FRONT-OFF-REAR switch defective
Check
Tighten
Replace
Replace
Replace
Engine Manual
Replace
3.2
ALTERNATOR
Alternator fails to charge
Battery condition
Alternator belt loose or broken
Loose, dirty, corroded terminals, or broken leads
Excessively worn, open or defective brushes
Open blocking diode
Regulator faulty
Open isolation diode
Open field coil
Check
4.4
Check/Repair
Check
Check
Check
Check
Replace
Low or unsteady charging rate
Alternator belt loose
Loose, dirty, corroded terminals, or broken leads
Excessively worn, sticky or intermittent brushes
Faulty regulator
Grounded or shorted turns in rotor
Open, grounded or turns in stator
4.4
Check/Repair
Check
Check
Check
Replace
Excessive charging rate (as evi-
denced by batteries requiring to
frequent refilling) or fans noisy
due to excessive speed
Regulator leads loose, dirty, corroded terminals, or wires
broken
Defective regulator
Clean/Repair
Check
Noisy alternator
Defective or badly worn V-belt
Worn bearings
Misaligned belt or pulley
Loose pulley
4.4
Replace
4.4
Tighten