Troubleshooting Charts; Engine Controls - Hobart 60CU20 Operation And Maintenance Manual With Illustrated Parts List

OM-2226 / Operation and Maintenance Manual
60CU20 / Series 500062 / 400 Hz. Generator Set

10) Troubleshooting Charts

Engine Controls

Trouble, Symptom,
Condition
1. The engine will not
start, and the
starter will not
crank the engine.
2. Engine will not
start. Starter clicks
on and off.
May 2, 2013
Revision 2
Probable Cause
a. Emergency Stop
switch has been
pressed.
b. Battery Disconnect
switch is in the OFF
position.
c. Battery discharged or
loose battery or ground
connection
d. Defective auxiliary
solenoid (L10)
e. No voltage at auxiliary
solenoid coil
f. Defective starter
g. Internal seizure
h. Defective Engine
Interface (EIB) board
i. Defective engine start
button
a. Low battery output
b. Loose starting circuit
connections or faulty
cables
Test, Check, and/or Remedy
• Make sure the Emergency Stop switch is pulled out.
• Make sure the battery disconnect switch is in the ON
position
• Make sure the voltage across the batteries is
approximately 12.8 VDC.
• Check the battery terminals.
• Be sure 12.8 volts DC is reaching the auxiliary
solenoid input terminal.
• Check if you can hear the auxiliary solenoid activate
when the start button is pressed. If not, check for
voltage on the auxiliary solenoid coil (see below).
• Temporarily connect a large-capacity jumper cable
(No. 1/0 minimum) between the hot side of auxiliary
starter solenoid and the starter input terminal. If
starter does not crank engine, the starter may be
defective
• Check inline fuse F112
• Check or replace the Engine Interface (EIB) board
Remove the starter motor from engine and apply 12
VDC to test it. Replace the starter if it doesn't operate.
If the starter is good, attempt to hand crank the engine
using a 3/4-inch square drive on the 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.
Replace the EIB board.
Measure the voltage across the switch. The voltage
should read approximately 5 VDC when the switch is
open and 0 V when the switch is closed. If voltage does
not go to 0 V, replace the switch.
Check the battery and recharge or replace
Check all connections and cables. Tighten or replace as
required.
Chapter 2-4
Page 10