H. Disconnect the black
AMP PROBE.
Engine
Preparation for Starter System Testing
A. Gasoline
engines with externally mounted
igni-
tion
coil.
—
Remove the coil high
tension
lead
at the dis-
tributor
coil tower
and
connect the
disconnected
lead to
an engine ground.
B. Gasoline
engines with integral mounted
ignition
coil.
—
Disconnect the
ignition
switch
voltage supply
lead
at the
distributor ignition unit battery
terminal.
C.
Gasoline engine with magneto ignition.
—
Connect a jumper
lead
to
the magneto
grounding terminal and to an engine
ground.
D.
Diesel engines.
—
Move the control lever to the
fuel OFF posi-
tion,
or disconnect the
fuel solenoid voltage
supply lead.
FIGURE
16. 12-24 Volt
Series-Parallel starting
circuit test
connections
(Negative
Ground shown).
STARTER
SYSTEM TESTS
A. Make
sure all
lights
and
accessories
are off and
doors closed.
B.
Set the FUNCTION
SELECTOR
to
the START-
ING
position.
C.
Adjust
AMPS DISPLAY
and
black AMP PROBE
to read ZERO using
the
ZERO/RESET
switch.
D. Connect
the black AMP PROBE
around
the veh-
icle
(A) battery negative
(-)
post cable, with the
clamp
arrow pointing
toward
the battery.
E.
Crank the engine for the
15 second
time period.
F.
Set
FUNCTION
SELECTOR
and LOAD
CON-
TROL KNOB fully
to OFF position.
G. Disconnect leads.
CHARGING
SYSTEM TESTS
A. Prepare
tester/hookup
as outlined in
A and B in
HOOKUPS AND
TESTING
PROCEDURES.
B. Set the
VOLT SELECTOR
to
INT for
12 volt
system.
C.
Adjust AMPS
DISPLAY
and black
AMP
PROBE
to read ZERO using
the ZERO/RESET
switch.
D.
Perform DIODE STATOR
test.
1. FUNCTION
SELECTOR
in CHARGING/
DIODE STATOR
position.
2. Achieve
engine speed
of 2500 rpm
or
greater.
3.
Observe DIODE
STATOR determination dis-
played after
3 seconds if current
is as least 5
amps.
E.
Set FUNCTION
SELECTOR
to
OFF
position.
F. Disconnect
leads.
17
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