Hatz 2-4L30, Workshop Manual, Page: 167 / 174

Trouble-shooting table for electrical system
4
L / M . . / 07.96
Trouble-shooting at the starting device
Malfunction
Starter motor
does not turn
when pre-heat/start
switch is operated.
Indication
Generator telltale light
does not come on.
Telltale light grows
slowly dimmer when
pre-heat/start switch
is operate
Telltale light burns
brightly.
Bridge terminals 30
and 50 briefly at the
starter motor, the
starter then turns.
Telltale light burns
brightly. Terminal 30 is
not connected to posi-
tive battery pole.
Telltale light burns
brightly, solenoid
switch is energised,
when solenoid switch
is bridged, starter
motor turns.
Cause
Poor connections (loose
or corroded), break in
cable or short to earth
(ground).
Battery flat or defective.
Battery is flat.
Line between terminal 50
and starter switch or bet-
ween terminal 30 and
battery is interrupted or
starter switch is faulty.
Starter inhibit relay or
delaying relay defective.
Starter pre-engagement
winding has burned out.
Worn or dirty contacts
on solenoid switch.
Remedy
Check battery lead and
connections, clean
battery poles and termi-
nals, make sure connec-
tions are clean.
Recharge or renew
battery.
Recharge the battery.
Repair the break or if
necessary renew the
starter switch.
Renew defective relay.
Renew the starter motor
and ensure a good con-
nection between terminal
30 at the starter and the
positive battery post
(main starter line).
Renew solenoid switch.