8-26
ELECTRIC STARTER
A 12-volt electric starter with a negative ground is
used for cranking the genset. When the starter is
energized, an inertial engagement system causes
the starter pinion gear to engage the ring gear on
the fan hub assembly. As the starter spins, the start-
er pinion gear drives the ring gear causing the gen-
set to crank.
Starter Voltage Check
Before removing the starter for service, perform the
following starter check to make sure the starter is
getting voltage from the control circuit.
1. Connect a voltmeter between the output termi-
nal on the start relay (opposite the BAT terminal
with the starter motor lead connected) and
ground. See Figure 8-23.
2. Press the start switch and observe the meter
reading. If approximately 12 VDC is measured
and the starter does not crank, the starter is de-
fective. Proceed to the starter disassembly
section. If low or no voltage is measured check
the starting battery, start solenoid, and control
wiring.
ES2016
START RELAY
FIGURE 8-23. STARTER VOLTAGE CHECK