Engine Controls - Hobart 60CU24 Operation And Maintenance Manual With Illustrated Parts List

OM-2098C / Operation and Maintenance Manual
60CU24 / Series 500060C / 400 Hz. Generator Set
Trouble, Symptom, Condition

Engine Controls

1. Engine will not start. Starter
will NOT crank engine.
April 01, 2005
Probable Cause
a. Battery discharged, or loose
battery or ground connection.
b. Electrical defect in starter.
c. Mechanical defect in starter.
d. Internal seizure.
e. Defective starter solenoid.
f. Defective auxiliary starter
solenoid.
Test, Check, and/or Remedy
Check voltage across batteries.
Voltage should be approximately
12.8 volts DC. Check all battery
terminals. Be sure 12.8 volts DC
is reaching solenoid input terminal.
Momentarily connect a large
capacity jumper cable (No. 1/0
minimum) between hot side of
starter solenoid and starter input
terminal. If starter does not crank
engine, proceed to step c. If
starter does crank engine, proceed
to step e.
Remove starter motor from engine
and apply 12 VDC to test it. If it
doesn't operate, it is defective.
Replace it. If starter motor does
operate, proceed to step d.
If battery and starter are good and
starter is unable to crank the
engine, internal seizure is
indicated. Attempt to hand crank
engine with a ¾-inch square drive
on a long flex handle on
crankshaft pulley. If engine cannot
be turned one complete revolution,
internal seizure is indicated.
Remove engine and contact the
engine manufacturer and/or
nearest dealer.
Momentarily connect a large
capacity jumper cable (No. 1/0
minimum) between the auxiliary
solenoid terminals (one on each
side). If engine does not crank,
replace starter solenoid. If engine
cranks, proceed to step f below.
Momentarily connect a small lug
jumper on front of auxiliary
solenoid to the battery terminal of
the auxiliary starter If engine does
not crank, replace auxiliary starter
solenoid. If engine cranks,
proceed to step g below.
Chapter 2-4
Page 11