Kubota KX080-4 Workshop Manual page 377

KX080-4, WSM
Fuse Layout and Capacities
(1) A/C Controller (+B)
(2) Meter (+B)
(3) Blower Motor
(4) Relay
(5) ECU (AC)
(6) Room Light
(7) Starter
(8) Wiper/Washer
(9) Compressor
(10) Electrical Outlet
(11) Front Work Light
Precautions when a Fuse Blows
When a fuse blows, there are 2 potential causes. The first is
when an overload of current exceeds the rated amperage of the
fuse, blowing it; the other is when it blows due to a repetitive,
intermittent current.
These two cases can be readily recognized visually, so when a
fuses blows, take note of the following points.
1. When a fuse blows due to an overload of current exceeding its
rated capacity.
An overload current produces a blown fuse such as shown at
left (A).
You should not immediately replace a fuse that blows in this
way with a new one.
The fuse will just blow again when subjected to the overload
current, so first inspect the circuit for a short or a problem with a
device, then after fixing the problem, install a fuse of the same
capacity.
The purpose of the original fuse is to provide a margin of safety,
so never replace a fuse with one of a higher capacity.
If you replace a fuse with one of a higher capacity, it presents
the danger of a current overload damaging the electrical
device(s) and/or the wiring in the circuit before blowing the fuse.
2. When a fuse blows due to a repetitive, intermittent current.
A repetitive, intermittent current produces a blown fuse such as
shown at left (B). In general, this kind of blown fuse occurs after
a relatively long period of time, so it does not happen very often.
With this kind of blown fuse, it is OK to replace it with a fuse of
the same capacity.
(A) Fuse Blown by Current Overload (B) Fuse Blown by Thermal Fatigue
4-S46
ELECTRICAL SYSTEM
(12) Cab Work Light
(13) Radio (AC)
(14) Fuel Filter Heater
(15) ECU (+B)
(16) ECU (POWER)
(17) Beacon
(18) Horn Switch
(19) Horn
(20) Lever Lock
(21) Alternator
(22) Fuel Pump
RY9212158ELS0016US0
RY9212001ELS0032US0
KiSC issued 08, 2015 A