JLG X20JP - X600AJ Service Manual - Manual (Page 117)

SECTION 3 - CHASSIS & TURNTABLE
3121623 – JLG Lift – 3-93
TROUBLESHOOTING AT THE STARTING
EQUIPMENT
Malfunction Indication Possible cause Remedial action
Starter does
not rotate
when
preheat
- starting
switch is
operated. Generator indicator
lamp is not on.
Indicator lamp dar-
kens slowly when
preheat-starter
switch is operated.
Indicator light re-
mains on brightly.
Bridge terminals 30
and 50 briefly at the
starter. The starter
then runs.
Indicator light re-
mains on brightly,
but no connection
between terminal 30
and positive pole of
battery.
Indicator light re-
mains on brightly,
solenoid switch is
energised; starter
runs when solenoid
switch is bridged.
Poor connection (loose
or oxidised), break in
cable or short to earth
(ground). Check battery cables
and connections, clean
battery posts and ter-
minals, make sure that
connections are tight.
Battery flat or defective. Recharge or renew the
battery.
Battery is flat
(discharged). Recharge the battery.
Break in line between
terminal 50 and starting
switch or in line between
terminal 30 and batte-
ry, or defective starting
switch. Repair the break; if
neces sary, renew the
starting switch.
Solenoid switch contacts
worn or dirty. Renew solenoid switch.
Pull-in winding of starter
has burned out. Renew starter, ensure
good connection be-
tween terminal 30 at
starter and positive
battery pole (main lead
to starter).