Remove And Installing Battery; Replacing Fuses - Hitachi 120-3 class Operator's Manual

Hydraulic excavator
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REMOVE AND INSTALLING BATTERY

CAUTION: When removing the battery disconnect
the negative (−) terminal (ground) first, while taking
care not to cause a short circuit. When installing the
battery, connect the positive (+) terminal before con-
necting the negative (−) terminal.

REPLACING FUSES

If any electrical equipment fails to operate, first check the
fuses. Fuse box is located behind the operator's seat. A fuse
location/specification decal is attached to the fuse box cover.
Remove the fuse box cover by lifting it upward. Spare fuses are
located on the underside of the cover.
IMPORTANT: Be sure to install fuses with correct amper-
age ratings to prevent electrical system
damage due to overload.
10- CONTROLLER
5A
9- BACKUP
10A
8- ECM
30A
7- LUBRICATOR
10A
6- OPTION2
10A
5- OPTION1
5A
4- SOLENOID
10A
3- HEATER
20A
2- WIPER
10A
1- LAMP
20A
MAINTENANCE
20- OPTION3
5A
19- SW. BOX
5A
18- POWER ON
5A
17- AIRCON
5A
16- GLOW R
5A
15- AUXILIARY
10A
14- FUEL PUMP
5A
13- LIGHTER
10A
12- RADIO
5A
11- HORN
10A
10
9
8
7
6
5
4
3
2
1
Tool
7-66
M1U1-07-017
Spare Fuses
20
19
18
17
16
15
14
13
12
11
M178-07-034

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