Doosan 25/300, Электронное руководство по обслуживанию

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Book No. 22772784 (9--8--06)
HP1300/1600WCU Electrical Manual
CIRCUIT DESCRIPTION
The WEDGE drives the engine starter through the auxiliary start
relay, K1.
K1 is mounted on the lifting rail near the engine.
K1 has a single set of contacts that connect to the starter solenoid.
Diode D4 is for field suppression across K1’s coil.
The control signal leaving the WEDGE on J1--28 passes through the
W1 harness and through a jumper plug. The jumper plug is replaced
with an ESTOP switch for ESA versions.
If the starter will not engage during a crank cycle, check the voltage
at the coil of K1 during the crank cycle. It should be 14--22VDC. If
voltage is not at K1, check for voltage back through the ESTOP
jumper and to the WEDGE.
If voltage is at K1 coil, verify voltage is sent to the starter solenoid
by K1 contact.
CIRCUIT TROUBLESHOOTING
Voltage available at the starter solenoid during a no--crank condition
indicates a starter problem.