Isuzu N-Series. Manual — part 533
6C-40 Fuel System
Fuel Gauge Unit
Components
Legend
1. Fuel Gauge Unit Connector
2. Fuel Gauge Unit
Removal
1. Remove the wiring connector from the fuel gauge
unit.
2. Remove the installed screw and remove the fuel
gauge unit.
Caution:
When removing/installing the fuel gauge unit, take care
not to interfere with adjacent parts and not to let the
arm etc. deformed. Also, after removing the fuel gauge
unit, cover the tank with a cloth to prevent the entry of
dust.
Inspection
The fuel tank unit changes the internal resistance
according to the float position (fluid level) to operate the
indicator of the fuel meter.
1
2
N6A6391E
F
E
N6A6392E
Fuel System 6C-41
1. While moving the float from “E” to “F”, measure the
resistance between the connector terminals 1J-28
and 2J-28.
2. Check that the fuel level warning lamp comes on
when the float is at “E” position. If the result of the
inspection is unsatisfactory, replace with a new
part.
Installation
Assemble in the reverse order of disassembly.
1. Install the fuel gauge unit.
2. Connect the wiring connector to the fuel gauge
unit.
Tightening Torque Specifications
N m (kg m / lb ft)
55 (5.6 / 41)
12 (1.2 / 9)
20 (2.0 / 15)
N6A6394E
Engine Electrical 6D-1
ENGINE
Engine Electrical
TABLE OF CONTENTS
Service Precautions . . . . . . . . . . . . . . . . . . . . . . .6D-2
General Procedure. . . . . . . . . . . . . . . . . . . . . . .6D-2
Battery. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6D-3
Charging System. . . . . . . . . . . . . . . . . . . . . . . . . .6D-6
General Description . . . . . . . . . . . . . . . . . . . . . .6D-6
Generator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6D-8
Starting System . . . . . . . . . . . . . . . . . . . . . . . . . .6D-19
Starter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6D-22
Components. . . . . . . . . . . . . . . . . . . . . . . . . . .6D-22
On-vehicle Service . . . . . . . . . . . . . . . . . . . . . . .6D-23
Unit Repair . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6D-25
Preheating System . . . . . . . . . . . . . . . . . . . . . . .6D-35
6D-2 Engine Electrical
Service Precautions
General Procedure
When fasteners are removed, always reinstall them at
the same location from which they were removed. If a
fastener needs to be replaced, use the correct part
number fastener for that application. If the correct part
number fastener is not available, a fastener of equal
size and strength (or stronger) may be used. Fasteners
that are not reused, and those requiring thread locking
compound will be called out. The correct torque value
must be used when installing fasteners that require it. If
the above conditions are not followed, parts or system
damage could result.
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