Isuzu N-Series. Service manual - part 532

6C-36   Fuel System

Torque Specifications

N6A6387E

Fuel System   6C-37

Fuel Sedimenter Switch

Inspection

1. Check that there is continuity between the switch

connector terminals when the float in the fuel
sedimenter is above the water drain line.

2. Turn on the ignition switch, disconnect the fuel

sedimenter connector, and connect the terminals
of the connectors on the vehicle side. Confirm that
the sedimenter warning lamp lights up.

If abnormalities are detected during the check, replace
the switch parts and carry out repairs in case of
defective connection between circuits or short circuits.

Legend

1. Sensor
2. Connector on The Vehicle Side
3. Harness
4. Drain Cock

 

Heater

Heater

Sedimenter

Switch

Sedimenter

Switch

N6A6388E

6C-38   Fuel System

Fuel Tank

Components

Legend

1. Fuel Gauge Unit Connector
2. Evaporated Fuel Hose
3. Fuel Feed Hose

4. Fuel Return Hose
5. Band
6. Fuel Tank

 

Removal

1. Loosen the fuel filler cap.
2. Drain the fuel from the drain plug.
3. After draining, tighten the drain plug with the

specified torque.

Tighten:

20 N

⋅m (2.0 kg⋅m/15 lb⋅ft)

4. Remove the fuel gauge unit connector.
5. Remove the evaporated fuel hose.

6. Remove the fuel feed hose.
7. Remove the fuel return hose.

• Plug the hose so that fuel does not flow out,

and tie it to the frame-side with the opening
faced up.

8. Remove the nut of band which installs fuel tank,

and remove the band tip in the frame-side.

9. Pull out the fuel tank to the outside.

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2

3

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5

6

N6A6389E

Fuel System   6C-39

Caution:
If the fuel tank cannot be pulled out, remove the bracket
and pull out the fuel tank downward.

Legend

1. Fuel Gauge Unit Connector
2. Fuel Gauge Unit
3. Cross-member
4. Fuel Tank

 

Installation

1. Install the fuel tank.

Caution:
When the bracket has been removed while taking out
the fuel tank, attach the bracket to the frame and
tighten it to the specified torque.

Tighten:

55 N

⋅m (5.6 kg⋅m/41 lb⋅ft)

Also, when placing the fuel tank on the bracket, make
sure that the rubber part attached on the fuel tank is put
onto the bracket.

2. Install the band to the fuel tank and tighten up the

nuts with the specified torque.

Tighten:

12 N

⋅m (1.2 kg⋅m/9 lb⋅ft)

3. Install the fuel return hose.
4. Install the fuel feed hose.

• Insert the hose into the pipe for more than 25

mm (1.0 in).

5. Install the evaporated fuel hose.

• Fill the fuel tank with fuel, and tighten the fuel

filler cap.

• Connect the battery earth cable.
• Make sure there is no fuel leakage from the

connector parts of hoses after starting the
engine.

6. Connect the fuel gauge unit connector.

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N6A6390E