Komatsu PC138US-11 Operation & Maintenance Manual page 178

Hydraulic excavator
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EXPLANATION OF COMPONENTS
Fuse capacities and circuit names
No.
Fuse
(1)
5 A
Secondary switch, working lamp relay
(2)
30 A
Solenoid valve
(3)
5 A
PPC hydraulic lock solenoid
(4)
10 A
Window washer, cigarette lighter
(5)
10 A
Horn
(6)
5 A
Spare
(7)
10 A
Revolving lamp (if equipped)
(8)
10 A
Radio, speaker, L.H. knob switch
(9)
20 A
Working lamp
(10)
20 A
Air conditioner unit
(11)
10 A
Headlamp (if equipped)
(12)
10 A
Optional power supply (1)
(13)
30 A
Optional power supply (2)
(14)
5 A
Air conditioner ECU power source
(15)
5 A
Key ACC signal
Radio backup, room lamp, system operating
(16)
10 A
lamp
Monitor, pump controller, KomVision (if equip-
(17)
20 A
ped)
(18)
30 A
Engine controller
(19)
5 A
Air conditioner ECU backup
Optional power supply (continuous power
(20)
10 A
supply)
No.
Fuse
(21)
10 A
Cab head light (1)
(22)
10 A
Cab rear light
(23)
10 A
Lower wiper
(24)
10 A
Quick coupler
(25)
10 A
Refuel pump
(26)
10 A
Cab head light (2)
(27)
10 A
Option light
(28)
20 A
Autogrease
(29)
30 A
Option heater
(30)
10 A
Spare
(31)
20 A
Sensor power relay (1)
(32)
10 A
Sensor power relay (2)
(33)
10 A
DEF pump heater
(34)
20 A
DEF heater relay
3-108
Name of circuit
Name of circuit
WENAM00111
OPERATION
RKA55250

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