John Deere 318 - Manual (Page 343)

3a
Bendix Starter—
No Load Running
Test
M37208 -UN-25JAN90
Disconnect battery
ground cable.
Remove starter and
mount in a vise.
Connect jumper cables
from starter to machine
battery or battery of
similar capacity.
Connect positive clamp
to starter positive (+)
terminal (A).
Connect negative (—)
battery cable (B) to
starter body.
Starter should run.
STARTER DOESN’T
RUN: Repair starter.
(See CTM2.)
STARTER RUNS: GO
TO
3b
3b
Bendix Starter—
No Load RPM
Test
M37203 -UN-25JAN90
Mount starter in a vise
and connect to a
battery as instructed in
3a
With starter running,
check no load rpm with
a tachometer such as
JT05719. (Follow
manufacturer
instructions with the
tachometer.)
No load rpm should be
about 5900.
RPM NO LESS THAN
5900: GO TO
3c
RPM BELOW 5900:
Make sure battery is of
proper rating size and
fully charged. If not,
repeat test as needed
with proper size battery
that’s fully charged.
If battery is OK, repair
or replace starter. (See
CTM2.)
3c
Bendix Starter—
No Load Amp
Draw Test
M37204 -UN-25JAN90
Mount starter in a vise
and connect to a
battery as instructed in
step
3a
With starter running,
check amperage with
JT05712 Current Gun
(A).
Starter should draw 30
amps or less at 5900
rpm.
AMPERAGE 30 OR
LESS: Starter OK.
Malfunction is in wiring
on machine. Check all
connections and
grounds.
AMPERAGE MORE
THAN 30: Repair or
replace starter. (See
CTM2.)
MX,159024030,6 -19-16MAY95
MX,159024030,7 -19-16MAY95
MX,159024030,8 -19-16MAY95
Electrical System Component Tests and Adjustments/Starter Tests
TM1590 (17MAY95)
240-25-3
316, 318 & 420 Lawn and Garden Tractors
020895
240
25
3