Komatsu D375A-8, Operation & Maintenance Manual

Page: 169 / 466

Fuse box (2)
No. Fuse ca-
pacity
Name of circuit
(1) 10 A Radio/ Room lamp
(2) - Spare
(3) 10 A Revolving lamp and rearview monitor
(4) 20 A Radio and cigarette lighter
(5) 10 A Front windshield wiper and rear windshield
wiper
(6) 10 A R.H. and L.H. door wipers
CIRCUIT BREAKER
• If the starting switch does not operate when it is turned to
ON position, remove the inspection cover under the front
of the console box on the left side of the operator's seat
and check the circuit breakers (A) and (B).
• The circuit breaker cuts out the electrical circuit to protect
the electrical parts and wiring when an overcurrent is gen-
erated.
• To restore the cut out electrical circuit, turn the starting
switch to OFF position and push in the reset button which
projected when the circuit was cut out.
The reset button remains pushed in if the electrical circuit
is operating normally. If the button being pushed in returns soon, check the electrical circuit.
REMARK
A circuit breaker is a circuit protection device to be installed to a high-voltage current circuit. Similarly to an ordi-
nary fuse, it protects electrical parts and wiring from abnormal current. It can be reused after the abnormal part
is repaired or replaced.
Breaker (A)
No. Fuse capaci-
ty
Name of circuit
1 30 A Cab main power
2 30 A Air conditioner
Breaker (B)
No.
Fuse capaci-
ty
Name of circuit
1 20 A P/T controller power supply
2 20 A W/E controller power supply
3 20 A Headlamp power supply
4 20 A Rear lamp
5 20 A Key B
OPERATION EXPLANATION OF COMPONENTS
3-111